12-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter AD9626 FEATURES APPLICATIONS SNR = 64.8 dBFS @ fIN up to 70 MHz @ 250 MSPS ENOB of 10.5 @ fIN up to 70 MHz @ 250 MSPS (−1.0 dBFS) SFDR = 80 dBc @ fIN up to 70 MHz @ 250 MSPS (−1.0 dBFS) Excellent linearity DNL = ±0.3 LSB typical INL = ±0.7 LSB typical CMOS outputs Single data port at up to 250 MHz Interleaved dual port @ ½ sample rate up to 125 MHz 700 MHz full power analog bandwidth On-chip reference, no external decoupling required Integrated input buffer and track-and-hold Low power dissipation 272 mW @ 170 MSPS 364 mW @ 250 MSPS Programmable input voltage range 1.0 V to 1.5 V, 1.25 V nominal 1.8 V analog and digital supply operation Selectable output data format (offset binary, twos complement, Gray code) Clock duty cycle stabilizer Integrated data capture clock Wireless and wired broadband communications Cable reverse path Communications test equipment Radar and satellite subsystems Power amplifier linearization GENERAL DESCRIPTION PRODUCT HIGHLIGHTS The AD9626 is a 12-bit monolithic sampling analog-to-digital converter optimized for high performance, low power, and ease of use. The product operates at up to a 250 MSPS conversion rate and is optimized for outstanding dynamic performance in wideband carrier and broadband systems. All necessary functions, including a track-and-hold (T/H) and voltage reference, are included on the chip to provide a complete signal conversion solution. 1. High Performance—Maintains 64.9 dBFS SNR @ 250 MSPS with a 70 MHz input. 2. Low Power—Consumes only 364 mW @ 250 MSPS. 3. Ease of Use—CMOS output data and output clock signal allow interface to current FPGA technology. The on-chip reference and sample-and-hold provide flexibility in system design. Use of a single 1.8 V supply simplifies system power supply design. 4. Serial Port Control—Standard serial port interface supports various product functions, such as data formatting, clock duty cycle stabilizer, power-down, gain adjust, and output test pattern generation. 5. Pin-Compatible Family—10-bit pin-compatible family offered as the AD9601. The ADC requires a 1.8 V analog voltage supply and a differential clock for full performance operation. The digital outputs are CMOS compatible and support either twos complement, offset binary format, or Gray code. A data clock output is available for proper output data timing. Fabricated on an advanced CMOS process, the AD9626 is available in a 56-lead LFCSP, specified over the industrial temperature range (−40°C to +85°C). FUNCTIONAL BLOCK DIAGRAM RBIAS PWDN AGND AVDD (1.8V) AD9626 REFERENCE CML VIN+ VIN– DRVDD DRGND TRACK-AND-HOLD ADC 12-BIT CORE CLK+ CLK– 12 OUTPUT 12 STAGING LVDS CLOCK MANAGEMENT Dx11 TO Dx0 OVRA OVRB SERIAL PORT DCO– RESET SCLK SDIO CSB 07099-001 DCO+ Figure 1. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. AD9626 TABLE OF CONTENTS Features .............................................................................................. 1 Clock Input Considerations...................................................... 19 Applications....................................................................................... 1 Power Dissipation and Power-Down Mode ........................... 20 Functional Block Diagram .............................................................. 1 Digital Outputs ........................................................................... 20 General Description ......................................................................... 1 Timing—Single Port Mode ....................................................... 21 Product Highlights ........................................................................... 1 Timing—Interleaved Mode....................................................... 21 Revision History ............................................................................... 2 Layout Considerations................................................................... 22 Specifications..................................................................................... 3 Power and Ground Recommendations ................................... 22 DC Specifications ......................................................................... 3 CML ............................................................................................. 22 AC Specifications.......................................................................... 4 RBIAS........................................................................................... 22 Digital Specifications ................................................................... 5 AD9626 Configuration Using the SPI ..................................... 22 Switching Specifications .............................................................. 6 Hardware Interface..................................................................... 23 Timing Diagrams.......................................................................... 7 Configuration Without the SPI ................................................ 23 Absolute Maximum Ratings............................................................ 8 Memory Map .................................................................................. 25 Thermal Resistance ...................................................................... 8 Reading the Memory Map Table.............................................. 25 ESD Caution.................................................................................. 8 Reserved Locations .................................................................... 25 Pin Configurations and Function Descriptions ........................... 9 Default Values ............................................................................. 25 Equivalent Circuits ......................................................................... 11 Logic Levels................................................................................. 25 Typical Performance Characteristics ........................................... 12 Evaluation Board ............................................................................ 27 Theory of Operation ...................................................................... 18 Outline Dimensions ....................................................................... 33 Analog Input and Voltage Reference ....................................... 18 Ordering Guide .......................................................................... 33 REVISION HISTORY 11/07—Revision 0: Initial Version Rev. 0 | Page 2 of 36 AD9626 SPECIFICATIONS DC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, TMIN = −40°C, TMAX = +85°C, fIN = −1.0 dBFS, full scale = 1.25 V, single port output mode, DCS enabled, unless otherwise noted. Table 1. Parameter 1 RESOLUTION ACCURACY No Missing Codes Offset Error Gain Error Differential Nonlinearity (DNL) Integral Nonlinearity (INL) TEMPERATURE DRIFT Offset Error Gain Error ANALOG INPUTS (VIN+, VIN−) Differential Input Voltage Range 2 Input Common-Mode Voltage Input Resistance (Differential) Input Capacitance POWER SUPPLY AVDD DRVDD Supply Currents IAVDD 3 IDRVDD3/Single Port Mode 4 IDRVDD3/Interleaved Mode 5 Power Dissipation3 Single Port Mode4 Interleaved Mode5 Power-Down Mode Supply Currents IAVDD IDRVDD Standby Mode Supply Currents IAVDD IDRVDD Temp Full 25°C Full 25°C Full 25°C Full 25°C Full Min AD9626-170 Typ Max 12 Min Guaranteed 4.0 −12 Min Guaranteed 4.0 +12 −12 +4.5 −2.1 1.4 0.3 +12 −12 +4.5 −2.1 +0.6 −0.6 0.7 +1.4 +0.6 −1.1 ±8 0.021 +4.5 0.3 −0.6 0.6 −1.4 +12 1.4 0.3 −0.6 AD9626-250 Typ Max 12 Guaranteed 4.0 1.4 −2.1 Full Full AD9626-210 Typ Max 12 +0.6 0.7 +1.1 −1.7 ±8 0.021 +1.7 ±8 0.021 Unit Bits mV mV % FS % FS LSB LSB LSB LSB μV/°C %/°C Full Full Full 25°C 0.98 1.25 1.4 4.3 2 1.5 0.98 1.25 1.4 4.3 2 1.5 0.98 1.25 1.4 4.3 2 1.5 V p-p V kΩ pF Full Full 1.7 1.58 1.8 1.8 1.9 1.9 1.7 1.7 1.8 1.8 1.9 1.9 1.7 1.7 1.8 1.8 1.9 1.9 V V mA mA mA mW mW mW Full Full Full Full Full Full 134 17 15 143 18.5 151 21 18 161 22 178 24 20 191 25.5 272 268 291 310 304 330 364 357 390 Full Full 40 170 40 170 Full Full 19 170 19 170 1 22 40 170 μA μA 22 19 170 mA μA See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions and how these tests were completed. The input range is programmable through the SPI, and the range specified reflects the nominal values of each setting. See the Memory Map section. 3 IAVDD and IDRVDD are measured with a −1 dBFS, 10.3 MHz sine input at rated sample rate. 4 Single data rate mode; this is the default mode of the AD9626. 5 Interleaved mode; user-programmable feature. See the Memory Map section. 2 Rev. 0 | Page 3 of 36 AD9626 AC SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, TMIN = −40°C, TMAX = +85°C, fIN = −1.0 dBFS, full scale = 1.25 V, , Single Port Output mode, DCS enabled, unless otherwise noted. 1 Table 2. Parameter 2 SNR fIN = 10 MHz fIN = 70 MHz SINAD fIN = 10 MHz fIN = 70 MHz EFFECTIVE NUMBER OF BITS (ENOB) fIN = 10 MHz fIN = 70 MHz WORST HARMONIC (SECOND OR THIRD) fIN = 10 MHz fIN = 70 MHz WORST OTHER (SFDR EXCLUDING SECOND AND THIRD) fIN = 10 MHz fIN = 70 MHz TWO-TONE IMD 140.2 MHz/141.3 MHz @ −7 dBFS 170.2 MHz/171.3 MHz @ −7 dBFS ANALOG INPUT BANDWIDTH 1 2 Temp 25°C Full 25°C Full 25°C Full 25°C Full Min AD9626-170 Typ Max 64.5 64.4 64.4 63.5 84 64.0 63.4 62.0 10.6 10.5 10.5 10.5 86 75 79 79 80 90 92 73 73 85 71 84 79 87 81 Bits Bits 83 77 71 92 dB dB dB dB 62.8 62.6 25°C Full 25°C Full 63.8 64.0 76 84 77 73 80 700 83 700 83 700 All ac specifications tested by driving CLK+ and CLK− differentially. See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions and how these tests were completed. Rev. 0 | Page 4 of 36 Unit dB dB dB dB 62.3 64.4 64.2 AD9626-250 Typ Max 64.0 64.2 64.5 Min 63.0 63.0 10.6 10.5 25°C 25°C 25°C AD9626-210 Typ Max 63.6 25°C 25°C 25°C Full 25°C Full Min dBc dBc dBc dBc dBc dBc dBc dBc dBFS dBc MHz AD9626 DIGITAL SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, TMIN = −40°C, TMAX = +85°C, fIN = −1.0 dBFS, full scale = 1.25 V, DCS enabled, unless otherwise noted. Table 3. Parameter 1 CLOCK INPUTS Logic Compliance Internal Common-Mode Bias Differential Input Voltage Input Voltage Range Input Common-Mode Range High Level Input Voltage (VIH) Low Level Input Voltage (VIL) Input Resistance (Differential) Input Capacitance LOGIC INPUTS Logic 1 Voltage Logic 0 Voltage Logic 1 Input Current (SDIO) Logic 0 Input Current (SDIO) Logic 1 Input Current (SCLK, PDWN, CSB, RESET) Logic 0 Input Current (SCLK, PDWN, CSB, RESET) Input Capacitance LOGIC OUTPUTS 2 High Level Output Voltage Low Level Output Voltage Output Coding 1 2 AD9626-170 Typ Max Full Full Full Full CMOS/LVDS/LVPECL 1.2 0.2 6 AVDD − AVDD + 0.3 1.6 1.1 AVDD 1.2 3.6 0 0.8 16 20 24 4 CMOS/LVDS/LVPECL 1.2 0.2 6 AVDD − AVDD + 0.3 1.6 1.1 AVDD 1.2 3.6 0 0.8 16 20 24 4 CMOS/LVDS/LVPECL 1.2 0.2 6 AVDD − AVDD + 0.3 1.6 1.1 AVDD 1.2 3.6 0 0.8 16 20 24 4 0.8 × AVDD 0.8 × AVDD 0.8 × AVDD Full Full 0.2 × AVDD Min AD9626-250 Typ Max Min Full Full Full Full Full Min AD9626-210 Typ Max Temp Unit V V p-p V V V V kΩ pF V 0.2 × AVDD 0.2 × AVDD V Full Full Full 0 −60 55 0 −60 55 0 −60 50 μA μA μA Full 0 0 0 μA 25°C 4 4 4 pF Full Full DRVDD − 0.05 DRVDD − 0.05 DRVDD − 0.05 GND + 0.05 GND + 0.05 GND + 0.05 Twos complement, Gray code, or offset binary (default) See the AN-835 Application Note, Understanding High Speed ADC Testing and Evaluation, for a complete set of definitions and how these tests were completed. LVDS RTERMINATION = 100 Ω. Rev. 0 | Page 5 of 36 V V AD9626 SWITCHING SPECIFICATIONS AVDD = 1.8 V, DRVDD = 1.8 V, TMIN = −40°C, TMAX = +85°C, fIN = −1.0 dBFS, full scale = 1.25 V, DCS enabled, unless otherwise noted. Table 4. Parameter (Conditions) Maximum Conversion Rate Minimum Conversion Rate CLK+ Pulse Width High (tCH) CLK+ Pulse Width Low (tCL) Output, Single Data Port Mode 1 Data Propagation Delay (tPD) DCO Propagation Delay (tCPD) Data to DCO Skew (tSKEW) Latency Output, Interleaved Mode 2 Data Propagation Delay (tPDA, tPDB) DCO Propagation Delay (tCPDA, tCPDB) Data to DCO Skew (tSKEWA, tSKEWB ) Latency Standby Recovery Power-Down Recovery Aperture Delay (tA) Aperture Uncertainty (Jitter, tJ) 1 2 Temp Full Full Full Full 25°C 25°C Full Full 25°C 25°C Full Full 25°C 25°C 25°C Min 170 AD9626-170 Typ Max Min 210 AD9626-210 Typ Max 40 2.65 2.65 0 0 2.9 2.9 3.7 3.4 0.3 6 3.5 3.0 0.5 6 250 50 1.1 0.1 0.2 See Figure 2. See Figure 3. Rev. 0 | Page 6 of 36 AD9626-250 Typ Max 2.0 2.0 Unit MSPS MSPS ns ns 3.7 3.4 0.3 6 ns ns ns Cycles 40 2.15 2.15 0.55 Min 250 0 0 2.4 2.4 3.7 3.4 0.3 6 3.5 3.0 0.5 6 250 50 0.1 0.2 40 1.8 1.8 0.55 1.1 0 0 3.5 3.0 0.5 6 250 50 0.1 0.2 0.55 1.1 ns ns ns Cycles ns μs ns ps rms AD9626 TIMING DIAGRAMS N+1 N+2 N+3 N N+4 tA N+8 N+5 N+7 N+6 tCLK = 1/fCLK CLK+ CLK– tCPD DCO– DCO+ DAX N–7 N–6 N–5 N–4 N–3 N–2 N–1 N N+1 N+2 07099-051 tSKEW tPD Figure 2. Single Port Mode N+1 N+2 N+3 N N+4 tA N+8 N+5 N+6 N+7 tCLK = 1/fCLK CLK+ CLK– tCPDA DCO+ DCO– tCPDB tSKEWA tPDA DAX N–6 N–4 N–2 N N+2 tSKEWB DBX N–7 N–5 N–3 Figure 3. Interleaved Mode Rev. 0 | Page 7 of 36 N–1 N+1 07099-050 tPDB AD9626 ABSOLUTE MAXIMUM RATINGS Table 5. Parameter ELECTRICAL AVDD to AGND DRVDD to DRGND AGND to DRGND AVDD to DRVDD Dx0 Through Dx11 to DRGND DCO+/DCO− to DRGND OVRA/OVRB to DGND CLK+ to AGND CLK− to AGND VIN+ to AGND VIN− to AGND SDIO/DCS to DGND PDWN to AGND CSB to AGND SCLK/DFS to AGND ENVIRONMENTAL Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) Junction Temperature Rating −0.3 V to +2.0 V −0.3 V to +2.0 V −0.3 V to +0.3 V −2.0 V to +2.0 V −0.3 V to DRVDD + 0.3 V −0.3 V to DRVDD + 0.3 V −0.3 V to DRVDD + 0.3 V −0.3 V to +3.6 V −0.3 V to +3.6 V −0.3 V to AVDD + 0.2 V −0.3 V to AVDD + 0.2 V −0.3 V to DRVDD + 0.3 V −0.3 V to +3.6 V −0.3 V to +3.6 V −0.3 V to +3.6 V −65°C to +125°C −40°C to +85°C 300°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE The exposed paddle must be soldered to the ground plane for the LFCSP package. Soldering the exposed paddle to the customer board increases the reliability of the solder joints, maximizing the thermal capability of the package. Table 6. Package Type 56-Lead LFCSP (CP-56-2) θJA 30.4 θJC 2.9 Unit °C/W Typical θJA and θJC are specified for a 4-layer board in still air. Airflow increases heat dissipation, effectively reducing θJA. In addition, metal in direct contact with the package leads from metal traces, and through holes, ground, and power planes reduces the θJA. 150°C ESD CAUTION Rev. 0 | Page 8 of 36 AD9626 56 55 54 53 52 51 50 49 48 47 46 45 44 43 DA5 DA4 DA3 DA2 DA1 DA0 (LSB) DCO+ DCO– DRGND DRVDD AVDD CLK– CLK+ AVDD PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN 1 INDICATOR AD9626 TOP VIEW (Not to Scale) PIN 0 (EXPOSED PADDLE) = AGND 42 41 40 39 38 37 36 35 34 33 32 31 30 29 AVDD AVDD CML AVDD AVDD AVDD VIN– VIN+ AVDD AVDD AVDD RBIAS AVDD PWDN 07099-002 DB5 DB6 DB7 DB8 DB9 DB10 (MSB) DB11 OVRB DRGND DRVDD SDIO/DCS SCLK/DFS CSB RESET 15 16 17 18 19 20 21 22 23 24 25 26 27 28 DA6 DA7 DA8 DA9 DA10 (MSB) DA11 DRVDD DRGND OVRA (LSB) DB0 DB1 DB2 DB3 DB4 Figure 4. Pin Configuration Table 7. Single Data Rate Mode Pin Function Descriptions Pin No. 30, 32, 33, 34, 37, 38, 39, 41, 42, 43, 46 7, 24, 47 0 8, 23, 48 35 36 40 Mnemonic AVDD Description 1.8 V Analog Supply. DRVDD AGND 1 DRGND1 VIN+ VIN− CML 44 45 31 28 25 CLK+ CLK− RBIAS RESET SDIO/DCS 26 27 29 49 50 51 52 53 54 55 56 1 2 SCLK/DFS CSB PWDN DCO− DCO+ DA0 (LSB) DA1 DA2 DA3 DA4 DA5 DA6 DA7 1.8 V Digital Output Supply. Analog Ground. Digital Output Ground. Analog Input—True. Analog Input—Complement. Common-Mode Output Pin. Enabled through the SPI, this pin provides a reference for the optimized internal bias voltage for VIN+/VIN−. Clock Input—True. Clock Input—Complement. Set Pin for Chip Bias Current. (Place 1% 10 kΩ resistor terminated to ground.) Nominally 0.5 V. CMOS-Compatible Chip Reset (Active Low). Serial Port Interface (SPI) Data Input/Output (Serial Port Mode); Duty Cycle Stabilizer Select (External Pin Mode). Serial Port Interface Clock (Serial Port Mode); Data Format Select Pin (External Pin Mode). Serial Port Chip Select (Active Low). Chip Power-Down. Data Clock Output—Complement. Data Clock Output—True. Output Port A Output Bit 0 (LSB). Output Port A Output Bit 1. Output Port A Output Bit 2. Output Port A Output Bit 3. Output Port A Output Bit 4. Output Port A Output Bit 5. Output Port A Output Bit 6. Output Port A Output Bit 7. Rev. 0 | Page 9 of 36 AD9626 Pin No. 3 4 5 6 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 Mnemonic DA8 DA9 DA10 DA11 (MSB) OVRA DB0 (LSB) DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 (MSB) OVRB Description Output Port A Output Bit 8. Output Port A Output Bit 9. Output Port A Output Bit 10. Output Port A Output Bit 11 (MSB). Output Port A Overrange Output Bit. Output Port B Output Bit 0 (LSB). Output Port B Output Bit 1. Output Port B Output Bit 2. Output Port B Output Bit 3. Output Port B Output Bit 4. Output Port B Output Bit 5. Output Port B Output Bit 6. Output Port B Output Bit 7. Output Port B Output Bit 8. Output Port B Output Bit 9. Output Port B Output Bit 10. Output Port B Output Bit 11 (MSB). Output Port B Overrange Output Bit. AGND and DRGND should be tied to a common quiet ground plane. Rev. 0 | Page 10 of 36 AD9626 EQUIVALENT CIRCUITS AVDD AVDD 26kΩ CSB 1kΩ 1.2V 10kΩ CLK– 07099-003 07099-006 10kΩ CLK+ Figure 5. Clock Inputs Figure 8. Equivalent CSB Input Circuit AVDD VIN+ BUF DRVDD AVDD 2kΩ AVDD VCML ~1.4V 2kΩ DRGND Figure 6. Analog Inputs (VCML = ~1.4 V) SCLK/DFS RESET PDWN 07099-052 BUF 07099-004 VIN– BUF Figure 9. CMOS Outputs (Dx, OVRA, OVRB, DCO+, DCO−) 1kΩ DRVDD 30kΩ 1kΩ 07099-007 07099-005 SDIO/DCS Figure 10. Equivalent SDIO/DCS Input Circuit Figure 7. Equivalent SCLK/DFS, RESET, PDWN Input Circuit Rev. 0 | Page 11 of 36 AD9626 TYPICAL PERFORMANCE CHARACTERISTICS AVDD = 1.8 V, DRVDD = 1.8 V, rated sample rate, DCS enabled, TA = 25°C, 1.25 V p-p differential input, AIN = −1 dBFS, unless otherwise noted. 35k 0 170MSPS 10.3MHz @ –1.0dBFS SNR: 64.5dB ENOB: 10.6 BITS SFDR: 84dBFS 25k –60 –80 10k –120 5k 0 10 20 30 40 50 60 70 80 FREQUENCY (MHz) 0 N 90 170MSPS 70.3MHz @ –1.0dBFS SNR: 64.4dB ENOB: 10.5 BITS SFDR: 79dBFS –20 SFDR (+85°C) 85 SFDR (+25°C) 80 SNR/SFDR (dB) –40 –60 –80 –100 75 SFDR (–40°C) 70 SNR (+25°C) 65 60 SNR (+85°C) 55 10 20 30 40 50 60 70 80 FREQUENCY (MHz) 50 07099-021 0 SNR (–40°C) 0 50 100 150 200 250 300 350 400 450 500 ANALOG INPUT FREQUENCY (MHz) Figure 12. AD9626-170 64k Point Single-Tone FFT; 170 MSPS, 70.3 MHz 07099-024 –120 Figure 15. AD9626-170 Single-Tone SNR/SFDR vs. Input Frequency (fIN) and Temperature with 1.25 V p-p Full Scale; 170 MSPS 0 100 170MSPS 140.3MHz @ –1.0dBFS SNR: 63.7dB ENOB: 10.4 BITS SFDR: 80dBc –20 –40 90 SFDR (dBFS) 80 SNR/SFDR (dB) 70 SNR (dBFS) –60 –80 60 50 40 30 SFDR (dBc) –100 20 –120 SNR (dB) 0 10 20 30 40 50 FREQUENCY (MHz) 60 70 80 0 90 80 70 60 50 40 30 20 10 0 AMPLITUDE (–dBFS) Figure 13. AD9626-170 64k Point Single-Tone FFT; 170 MSPS, 140.3 MHz Rev. 0 | Page 12 of 36 Figure 16. AD9626-170 SNR/SFDR vs. Input Amplitude; 140.3 MHz 07099-025 10 07099-022 –140 N+1 N+2 N+3 N+4 Figure 14. AD9626-170 Grounded Input Histogram; 170 MSPS 0 –140 N–4 N–3 N–2 N–1 BIN Figure 11. AD9626-170 64k Point Single-Tone FFT; 170 MSPS, 10.3 MHz AMPLITUDE (dBFS) 15k –100 –140 AMPLITUDE (dBFS) 20k 07099-023 NUMBER OF HITS –40 30k 07099-020 AMPLITUDE (dBFS) –20 AD9626 1.0 90 0.8 85 SFDR (+25°C) 0.6 80 SNR/SFDR (dB) INL (LSB) 0.4 0.2 0 –0.2 75 SFDR (–40°C) SFDR (+85°C) 70 SNR (–40°C) 65 –0.4 60 SNR (+85°C) –0.6 SNR (+25°C) 512 1024 1536 2048 2560 3072 3584 4096 OUTPUT CODE 50 Figure 17. AD9626-170 INL; 170 MSPS 0 350 –20 AMPLITUDE (dBFS) TOTAL POWER (mW) 250 200 IAVDD (mA) 100 IDVDD (mA) 0 5 25 45 65 85 105 125 145 165 185 205 225 245 SAMPLE RATE (MSPS) Figure 18. AD9626-170 Power Supply Current vs. Sample Rate 200 250 300 350 400 450 500 210MSPS 10.3MHz @ –1.0dBFS SNR: 64.5dB ENOB: 10.6 BITS SFDR: 86dBc –40 –60 –80 –100 –140 0 20 40 60 80 100 FREQUENCY (MHz) Figure 21. AD9626-210 64k Point Single-Tone FFT; 210 MSPS, 10.3 MHz 1.0 0 0.8 210MSPS 70.3MHz @ –1.0dBFS SNR: 64.2dB ENOB: 10.5 BITS SFDR: 79dBc –20 0.6 AMPLITUDE (dBFS) 0.4 0.2 0 –0.2 –0.4 –40 –60 –80 –100 –0.6 –1.0 0 512 1024 1536 2048 2560 3072 OUTPUT CODE Figure 19. AD9626-170 DNL; 170 MSPS 3584 4096 –140 0 20 40 60 FREQUENCY (MHz) 80 100 07099-031 –120 –0.8 07099-028 DNL (LSB) 150 –120 07099-027 50 100 Figure 20. SNR/SFDR vs. Analog Input Frequency, Interleaved Mode vs. Temperature 400 150 50 ANALOG INPUT FREQUENCY (MHz) 300 CURRENT (mA) 0 07099-030 0 07099-026 –1.0 07099-029 55 –0.8 Figure 22. AD9626-210 64k Point Single-Tone FFT; 210 MSPS, 70.3 MHz Rev. 0 | Page 13 of 36 AD9626 0 100 210MSPS 170.3MHz @ –1.0dBFS SNR: 63.23dB ENOB: 10.4 BITS SFDR: 78dBc –40 SFDR (dBFS) 90 80 70 SNR/SFDR (dB) AMPLITUDE (dBFS) –20 –60 –80 SNR (dBFS) 60 50 40 SFDR (dBc) 30 –100 SNR (dB) 20 –120 0 20 40 60 80 100 FREQUENCY (MHz) 0 90 80 70 60 50 40 30 20 10 0 AMPLITUDE (–dBFS) Figure 23. AD9626-210 64k Point Single-Tone FFT; 210 MSPS, 170.3 MHz 07099-035 10 07099-032 –140 Figure 26. AD9626-210 SNR/SFDR vs. Input Amplitude; 210 MSPS, 170.3 MHz 35k 1.0 0.8 30k 0.6 0.4 INL (LSB) NUMBER OF HITS 25k 20k 15k 0.2 0 –0.2 –0.4 10k –0.6 5k N+1 N+2 N+3 N+4 N+5 BIN –1.0 0 512 105 125 145 165 185 205 225 245 2048 2560 3072 3584 Figure 27. AD9626-210 INL; 210 MSPS 90 400 85 350 SFDR (+85°C) 75 SFDR (+25°C) 70 SNR (–40°C) SFDR (–40°C) 65 60 SNR (+25°C) 100 200 IAVDD (mA) 150 150 200 250 300 350 400 ANALOG INPUT FREQUENCY (MHz) 450 IDVDD (mA) 50 500 07099-034 55 50 250 100 SNR (+85°C) 0 TOTAL POWER (mW) 300 CURRENT (mA) 80 SNR/SFDR (dB) 4096 1536 OUTPUT CODE Figure 24. AD9626-210 Grounded Input Histogram; 210 MSPS 50 1024 07099-036 N 07099-037 N–3 N–2 N–1 07099-033 0 –0.8 Figure 25. AD9626-210 Single-Tone SNR/SFDR vs. Input Frequency (fIN) and Temperature with 1.25 V p-p Full Scale; 210 MSPS Rev. 0 | Page 14 of 36 0 5 25 45 65 85 SAMPLE RATE (MSPS) Figure 28. AD9626-210 Power Supply Current vs. Sample Rate AD9626 1.0 0 0.8 250MSPS 170MHz @ –1.0dBFS SNR: 62.9dB ENOB: 10.2 BITS SFDR: 72dBc –20 0.6 AMPLITUDE (dBFS) DNL (LSB) 0.4 0.2 0 –0.2 –0.4 –40 –60 –80 –100 –0.6 0 512 1024 1536 2048 2560 3072 3584 4096 OUTPUT CODE –140 07099-038 Figure 29. AD9626-210 DNL; 210 MSPS 80 100 120 25k –60 –80 20k 15k –100 10k –120 5k 0 20 40 60 80 100 120 0 N–4 N–3 N–2 N–1 N N+1 N+2 N+3 N+4 BIN Figure 30. AD9626-250 64k Point Single-Tone FFT; 250 MSPS, 10.3 MHz 07099-041 NUMBER OF HITS –40 30k 07099-039 AMPLITUDE (dBFS) 60 35k FREQUENCY (MHz) Figure 33. AD9626-250 Grounded Input Histogram; 250 MSPS 90 0 250MSPS 70.3MHz @ –1.0dBFS SNR: 63.8dB ENOB: 10.6 BITS SFDR: 80dBc –20 –40 85 SFDR (+25°C) 80 SNR/SFDR (dB) AMPLITUDE (dBFS) 40 Figure 32. AD9626-250 64k Point Single-Tone FFT; 250 MSPS, 170.3 MHz 250MSPS 10.3MHz @ –1.0dBFS SNR: 64.0dB ENOB: 10.5 BITS SFDR: 83dBc –20 –60 –80 –100 75 SFDR (+85°C) SFDR (–40°C) 70 SNR (–40°C) 65 60 –120 SNR (+85°C) SNR (+25°C) 55 0 20 40 60 80 FREQUENCY (MHz) 100 120 50 07099-057 –140 20 FREQUENCY (MHz) 0 –140 0 0 50 100 150 200 250 300 350 400 ANALOG INPUT FREQUENCY (MHz) Figure 31. AD9626-250 64k Point Single-Tone FFT; 250 MSPS, 70.3 MHz 450 500 07099-042 –1.0 07099-040 –120 –0.8 Figure 34. AD9626-250 Single-Tone SNR/SFDR vs. Input Frequency (fIN) and Temperature with 1.25 V p-p Full Scale; 250 MSPS Rev. 0 | Page 15 of 36 AD9626 100 1.0 SFDR (dBFS) 90 0.8 80 0.6 0.4 SNR (dBFS) 60 DNL (LSB) SNR/SFDR (dB) 70 50 40 SFDR (dBc) 30 0.2 0 –0.2 –0.4 20 –0.6 10 –0.8 80 70 60 50 40 30 20 0 10 AMPLITUDE (–dBFS) –1.0 07099-043 0 90 0 512 2048 2560 3072 3584 4096 Figure 38. AD9626-250 DNL; 250 MSPS 1.0 90 0.8 80 SFDR 0.6 70 SNR/SFDR (dB) 0.4 0.2 0 –0.2 –0.4 60 SNR 50 40 30 20 –0.6 10 –0.8 512 1024 1536 2048 2560 3072 3584 4096 OUTPUT CODE 0 75 07099-044 0 95 115 135 155 175 195 215 235 255 275 SAMPLE RATE (MSPS) Figure 36. AD9626-250 INL; 250 MSPS 07099-047 INL (LSB) 1536 OUTPUT CODE Figure 35. AD9626-250 SNR/SFDR vs. Input Amplitude; 250 MSPS, 170.3 MHz –1.0 1024 07099-046 SNR (dB) Figure 39. SNR/SFDR vs. Sample Rate; 250 MSPS, 170.3 MHz @ −1 dBFS 450 2.5 400 2.0 1.5 GAIN (%FS) 300 250 200 IAVDD (mA) AD9626-210 1.0 AD9626-170 0.5 150 100 5 25 45 65 85 105 125 145 165 185 205 225 245 SAMPLE RATE (MSPS) –0.5 –60 –40 –20 0 20 40 60 TEMPERATURE (°C) Figure 40. Gain vs. Temperature Figure 37. AD9626 Power Supply Current vs. Sample Rate Rev. 0 | Page 16 of 36 80 100 120 07099-048 0 0 IDVDD (mA) 50 07099-045 CURRENT (mA) AD9626-250 TOTAL POWER (mW) 350 AD9626 6.0 5.5 AD9626-250 4.5 AD9626-210 4.0 AD9626-170 3.5 3.0 2.5 2.0 –40 –30 –20 –10 0 10 20 30 40 50 60 TEMPERATURE (°C) 70 80 90 07099-049 OFFSET (mV) 5.0 Figure 41. Offset vs. Temperature Rev. 0 | Page 17 of 36 AD9626 THEORY OF OPERATION ANALOG INPUT AND VOLTAGE REFERENCE 499Ω An internal differential voltage reference creates positive and negative reference voltages that define the 1.25 V p-p fixed span of the ADC core. This internal voltage reference can be adjusted by means of SPI control. See the AD9626 Configuration Using the SPI section for more details. AD8138 523Ω VIN– 33Ω CML 499Ω Figure 42. Differential Input Configuration Using the AD8138 At input frequencies in the second Nyquist zone and above, the performance of most amplifiers may not be adequate to achieve the true performance of the AD9626. This is especially true in IF undersampling applications where frequencies in the 70 MHz to 100 MHz range are being sampled. For these applications, differential transformer coupling is the recommended input configuration. The signal characteristics must be considered when selecting a transformer. Most RF transformers saturate at frequencies below a few millihertz, and excessive signal power can also cause core saturation, which leads to distortion. In any configuration, the value of the shunt capacitor, C, is dependent on the input frequency and may need to be reduced or removed. 15Ω 1.25V p-p 50Ω VIN+ AD9626 2pF VIN– 15Ω 0.1µF Figure 43. Differential Transformer-Coupled Configuration As an alternative to using a transformer-coupled input at frequencies in the second Nyquist zone, the AD8352 differential driver can be used (see Figure 44). VCC 0.1µF 0.1µF 0Ω 16 1 ANALOG INPUT 8, 13 11 0.1µF R 2 VIN+ 200Ω CD Differential Input Configurations RD AD8352 RG 3 Optimum performance is achieved while driving the AD9626 in a differential input configuration. For baseband applications, the AD8138 differential driver provides excellent performance and a flexible interface to the ADC. The output common-mode voltage of the AD8138 is easily set to AVDD/2 + 0.5 V, and the driver can be configured in a Sallen-Key filter topology to provide band limiting of the input signal. AD9626 20pF 0.1µF The analog input to the AD9626 is a differential buffer. For best dynamic performance, the source impedances driving VIN+ and VIN− should be matched such that common-mode settling errors are symmetrical. The analog input is optimized to provide superior wideband performance and requires that the analog inputs be driven differentially. A wideband transformer, such as Mini-Circuits® ADT1-1WT, can provide the differential analog inputs for applications that require a single-ended-to-differential conversion. Both analog inputs are self-biased by an on-chip resistor divider to a nominal 1.4 V. AVDD VIN+ 33Ω 499Ω 0.1µF 200Ω R 4 ANALOG INPUT Rev. 0 | Page 18 of 36 10 C 5 0.1µF 0Ω AD9626 VIN– CML 14 0.1µF 0.1µF Figure 44. Differential Input Configuration Using the AD8352 07099-010 The input stage contains a differential SHA that can be ac- or dc-coupled. The output-staging block aligns the data, carries out the error correction, and passes the data to the output buffers. The output buffers are powered from a separate supply, allowing adjustment of the output voltage swing. During powerdown, the output buffers go into a high impedance state. 49.9Ω 07099-008 Each stage of the pipeline, excluding the last, consists of a low resolution flash ADC connected to a switched capacitor DAC and interstage residue amplifier (MDAC). The residue amplifier magnifies the difference between the reconstructed DAC output and the flash input for the next stage in the pipeline. One bit of redundancy is used in each stage to facilitate digital correction of flash errors. The last stage simply consists of a flash ADC. 1V p-p 07099-009 The AD9626 architecture consists of a front-end sample-andhold amplifier (SHA) followed by a pipelined switched capacitor ADC. The quantized outputs from each stage are combined into a final 12-bit result in the digital correction logic. The pipelined architecture permits the first stage to operate on a new input sample, while the remaining stages operate on preceding samples. Sampling occurs on the rising edge of the clock. AD9626 For optimum performance, the AD9626 sample clock inputs (CLK+ and CLK−) should be clocked with a differential signal. This signal is typically ac-coupled into the CLK+ pin and the CLK− pin via a transformer or capacitors. These pins are biased internally and require no additional bias. Figure 45 shows one preferred method for clocking the AD9626. The low jitter clock source is converted from single-ended to differential using an RF transformer. The back-to-back Schottky diodes across the secondary transformer limit clock excursions into the AD9626 to approximately 0.8 V p-p differential. This helps prevent the large voltage swings of the clock from feeding through to other portions of the AD9626 and preserves the fast rise and fall times of the signal, which are critical to low jitter performance. MINI-CIRCUITS ADT1–1WT, 1:1Z 0.1µF XFMR 50Ω CLOCK INPUT AD9510/AD9511/ AD9512/AD9513/ AD9514/AD9515 0.1µF CLK 50Ω* CMOS DRIVER 0.1µF CLK– 0.1µF Figure 48. Single-Ended 1.8 V CMOS Sample Clock ADC AD9626 0.1µF 07099-011 SCHOTTKY DIODES: HSM2812 CLOCK INPUT AD9510/AD9511/ AD9512/AD9513/ AD9514/AD9515 100Ω 0.1µF CLK AD9626 CLK– 07099-012 240Ω Figure 46. Differential PECL Sample Clock AD9510/AD9511/ AD9512/AD9513/ AD9514/AD9515 0.1µF CLK+ CLK 100Ω 0.1µF CLK 50Ω* ADC AD9626 CLK– 50Ω* *50Ω RESISTORS ARE OPTIONAL. Figure 47. Differential LVDS Sample Clock 07099-013 CLOCK INPUT LVDS DRIVER ADC 0.1µF AD9626 CLK– Figure 49. Single-Ended 3.3 V CMOS Sample Clock ADC *50Ω RESISTORS ARE OPTIONAL. 0.1µF CLK+ *50Ω RESISTOR IS OPTIONAL. CLK+ PECL DRIVER 0.1µF OPTIONAL 0.1µF 100Ω CLK 0.1µF CLK CLOCK INPUT CMOS DRIVER Clock Duty Cycle Considerations 0.1µF 240Ω CLK 0.1µF AD9510/AD9511/ AD9512/AD9513/ AD9514/AD9515 50Ω* 0.1µF 50Ω* If a low jitter clock is available, another option is to ac couple a differential PECL signal to the sample clock input pins, as shown in Figure 46. The AD9510/AD9511/AD9512/AD9513/ AD9514/AD9515 family of clock drivers offers excellent jitter performance. 50Ω* 39kΩ CLK+ Figure 45. Transformer-Coupled Differential Clock 0.1µF ADC *50Ω RESISTOR IS OPTIONAL. 100Ω 0.1µF CLOCK INPUT CLK+ AD9626 CLK CLK– CLOCK INPUT OPTIONAL 0.1µF 100Ω 07099-015 0.1µF CLOCK INPUT In some applications, it is acceptable to drive the sample clock inputs with a single-ended CMOS signal. In such applications, CLK+ should be directly driven from a CMOS gate, and the CLK− pin should be bypassed to ground with a 0.1 μF capacitor in parallel with a 39 kΩ resistor (see Figure 48). Although the CLK+ input circuit supply is AVDD (1.8 V), this input is designed to withstand input voltages up to 3.3 V, making the selection of the drive logic voltage very flexible. 07099-014 CLOCK INPUT CONSIDERATIONS Typical high speed ADCs use both clock edges to generate a variety of internal timing signals. As a result, these ADCs may be sensitive to the clock duty cycle. Commonly, a 5% tolerance is required on the clock duty cycle to maintain dynamic performance characteristics. The AD9626 contains a duty cycle stabilizer (DCS) that retimes the nonsampling edge, providing an internal clock signal with a nominal 50% duty cycle. This allows a wide range of clock input duty cycles without affecting the performance of the AD9626. When the DCS is on, noise and distortion performance are nearly flat for a wide range of duty cycles. However, some applications may require the DCS function to be off. If so, keep in mind that the dynamic range performance can be affected when operated in this mode. See the AD9626 Configuration Using the SPI section for more details on using this feature. The duty cycle stabilizer uses a delay-locked loop (DLL) to create the nonsampling edge. As a result, any changes to the sampling frequency require approximately eight clock cycles to allow the DLL to acquire and lock to the new rate. Rev. 0 | Page 19 of 36 AD9626 Clock Jitter Considerations High speed, high resolution ADCs are sensitive to the quality of the clock input. The degradation in SNR for a full-scale input signal at a given input frequency (fA) due only to aperture jitter (tJ) can be calculated by SNR Degradation = 20 × log10[1/2 × π × fA × tJ] In this equation, the rms aperture jitter represents the root mean square of all jitter sources, including the clock input, analog input signal, and ADC aperture jitter specifications. IF undersampling applications are particularly sensitive to jitter (see Figure 50). The clock input should be treated as an analog signal in cases where aperture jitter may affect the dynamic range of the AD9626. Power supplies for clock drivers should be separated from the ADC output driver supplies to avoid modulating the clock signal with digital noise. Low jitter, crystal controlled oscillators make the best clock sources. If the clock is generated from another type of source (by gating, dividing, or other methods), it should be retimed by the original clock at the last step. Refer to the AN-501 Application Note and the AN-756 Application Note for more in-depth information about jitter performance as it relates to ADCs (visit www.analog.com). 130 RMS CLOCK JITTER REQUIREMENT 90 14 BITS The off-chip drivers on the AD9626 are CMOS-compatible output levels. The outputs are biased from a separate supply (DRVDD), allowing isolation from the analog supply and easy interface to external logic. The outputs are CMOS devices that swing from ground to DRVDD (with no dc load). It is recommended to minimize the capacitive load the ADC drives by keeping the output traces short (<1 inch, for a total CLOAD < 5 pF). When operating in CMOS mode, it is also recommended to place low value (20 Ω) series damping resistors on the data lines to reduce switching transient effects on performance. The format of the output data is offset binary by default. An example of the output coding format can be found in Table 11. If it is desired to change the output data format to twos complement, see the AD9626 Configuration Using the SPI section. 12 BITS 70 10 BITS 60 8 BITS 50 40 1 0.125ps 0.25ps 0.5ps 1.0ps 2.0ps 10 100 ANALOG INPUT FREQUENCY (MHz) 1000 Figure 50. Ideal SNR vs. Input Frequency and Jitter for 0 dBFS input Signal POWER DISSIPATION AND POWER-DOWN MODE As shown in Figure 37, the power dissipated by the AD9626 is proportional to its sample rate. The digital power dissipation does not vary much because it is determined primarily by the DRVDD supply and bias current of the LVDS output drivers. An out-of-range condition exists when the analog input voltage is beyond the input range of the ADC. OVRA/OVRB is a digital output that is updated along with the data output corresponding to the particular sampled input voltage. Thus, OVRA/OVRB has the same pipeline latency as the digital data. OVRA/OVRB is low when the analog input voltage is within the analog input range and high when the analog input voltage exceeds the input range, as shown in Figure 51. OVRA/OVRB remains high until the analog input returns to within the input range and another conversion is completed. By logically AND-ing OVRA/OVRB with the MSB and its complement, overrange high or underrange low conditions can be detected. By asserting PDWN (Pin 29) high, the AD9626 is placed in standby mode or full power-down mode, as determined by the contents of Serial Port Register 08. Reasserting the PDWN pin low returns the AD9626 into its normal operational mode. An additional standby mode is supported by means of varying the clock input. When the clock rate falls below 50 MHz, the AD9626 assumes a standby state. In this case, the biasing network Rev. 0 | Page 20 of 36 OVRA/OVRB DATA OUTPUTS 1 0 0 1111 1111 1111 1111 1111 1111 1111 1111 1110 +FS – 1 LSB OVRA/ OVRB –FS + 1/2 LSB 0 0 1 0000 0000 0001 0000 0000 0000 0000 0000 0000 –FS –FS – 1/2 LSB +FS +FS – 1/2 LSB 07099-017 80 30 Digital Outputs and Timing Out-of-Range 07099-016 SNR (dB) 110 16 BITS DIGITAL OUTPUTS An output clock signal is provided to assist in capturing data from the AD9626. The DCO+/DCO− signal is used to clock the output data and is equal to the sampling clock (CLK) rate in single port mode, and one-half the clock rate in interleaved output mode. See the timing diagrams shown in Figure 2 and Figure 3 for more information. 120 100 and internal reference remain on, but digital circuitry is powered down. Upon reactivating the clock, the AD9626 resumes normal operation after allowing for the pipeline latency. Figure 51. OVRA/OVRB Relation to Input Voltage and Output Data AD9626 TIMING—SINGLE PORT MODE In single port mode, the CMOS output data is available from Data Port A (DA0 to DA11). The outputs for Port B (DB0 to DB11) are unused, and are high impedance in this mode. The Port A outputs and the differential output data clock (DCO+/DCO−) switch nearly simultaneously during the rising edge of DCO+. In this mode, it is recommended to use the rising edge of DCO− to capture the data from Port A. The setup and hold time depends on the input sample clock period, and is approximately 1/fCLK ± tSKEW. TIMING—INTERLEAVED MODE In interleaved mode, the output data of the AD9626 is demultiplexed onto two data port buses, Port A (DA0 to DA11) and Port B (DB0− to DB11). The output data and differential data capture clock switch at one-half the rate of the sample clock input (CLK+/CLK−), increasing the setup and hold time for the external data capture circuit relative to single port mode (see Figure 3, interleaved mode timing diagram). The two ports switch on alternating sample clock cycles, with the data for Port A being valid during the rising edge of DCO+, and the data for Port B being valid during the rising edge of DCO−. The pipeline latency for both ports is six sample clock cycles. Due to the random nature of the ÷2 circuit that generates the timing for the output stage in interleaved mode, the first data sample during power up can be assigned to either Data Port A or Port B. The user cannot control the polarity of the output data clock relative to the input sample clock. In this mode, it is recom- mended to use the rising edge of DCO+ to capture the data from Port A, and the rising edge of DCO− to capture the data from Port B. In both cases, the setup and hold time depends on the input sample clock period, and both are approximately 2/fS ± tSKEW. fS/2 Spurious Because the AD9626 output data rate is at one-half the sampling frequency in interleaved output mode, there is significant fS/2 energy in the outputs of the part, and there will be significant energy in the ADC output spectrum at fS /2. Care must be taken to be certain that this fS/2 energy does not couple into either the clock circuit or the analog inputs of the AD9626. When fS/2 energy is coupled in this fashion, it appears as a spurious tone reflected around fS/4, 3fS/4, 5fS/4, and so on. For example, in a 125 MSPS sampling application with a 90 MHz single-tone analog input, this energy generates a tone at 97.5 MHz. [(3 × 125 MSPS/4 − 90 MHz) + 3 × 125 MSPS/4] Depending on the relationship of the IF frequency to the center of the Nyquist zone, this spurious tone may or may not be in the user’s band of interest. Some residual fS/2 energy is present in the AD9601, and the level of this spur is typically below the level of the harmonics at clock rates. Figure 20 shows a plot of the fS/2 spur level vs. the analog input frequency for the AD9626-250. For the specifications provided in Table 2, the fS/2 spur effect is not a factor, as the device is specified in single port output mode. Rev. 0 | Page 21 of 36 AD9626 LAYOUT CONSIDERATIONS POWER AND GROUND RECOMMENDATIONS RBIAS When connecting power to the AD9626, it is recommended that two separate supplies be used: one for analog (AVDD, 1.8 V nominal) and one for digital (DRVDD, 1.8 V nominal). If only a single 1.8 V supply is available, it is routed to AVDD first, then tapped off and isolated with a ferrite bead or filter choke with decoupling capacitors proceeding connection to DRVDD. The user can employ several different decoupling capacitors to cover both high and low frequencies. These should be located close to the point of entry at the PC board level and close to the parts with minimal trace length. The AD9626 requires the user to place a 10 kΩ resistor between the RBIAS pin and ground. This resistor sets the master current reference of the ADC core and should have at least a 1% tolerance. A single PCB ground plane is sufficient when using the AD9626. With proper decoupling and smart partitioning of analog, digital, and clock sections of the PCB, optimum performance is easily achieved. Exposed Paddle Thermal Heat Slug Recommendations It is required that the exposed paddle on the underside of the ADC be connected to analog ground (AGND) to achieve the best electrical and thermal performance of the AD9626. An exposed, continuous copper plane on the PCB should mate to the AD9626 exposed paddle, Pin 0. The copper plane should have several vias to achieve the lowest possible resistive thermal path for heat dissipation to flow through the bottom of the PCB. These vias should be solder-filled or plugged. To maximize the coverage and adhesion between the ADC and PCB, partition the continuous plane by overlaying a silkscreen on the PCB into several uniform sections. This provides several tie points between the two during the reflow process. Using one continuous plane with no partitions guarantees only one tie point between the ADC and PCB. See Figure 52 for a PCB layout example. For detailed information on packaging and the PCB layout of chip scale packages, see Application Note AN-772, A Design and Manufacturing Guide for the Lead Frame Chip Scale Package. 07099-018 SILKSCREEN PARTITION PIN 1 INDICATOR Figure 52. Typical PCB Layout CML The CML pin should be decoupled to ground with a 0.1 μF capacitor, as shown in Figure 54. AD9626 CONFIGURATION USING THE SPI The AD9626 SPI allows the user to configure the converter for specific functions or operations through a structured register space inside the ADC. This gives the user added flexibility to customize device operation depending on the application. Addresses are accessed (programmed or read back) serially in one-byte words. Each byte can be further divided down into fields, which are documented in the Memory Map section. There are three pins that define the serial port interface or SPI to this particular ADC. They are the SPI SCLK/DFS, SPI SDIO/DCS, and CSB pins. The SCLK/DFS (serial clock) is used to synchronize the read and write data presented the ADC. The SDIO/DCS (serial data input/output) is a dual-purpose pin that allows data to be sent and read from the internal ADC memory map registers. The CSB is an active low control that enables or disables the read and write cycles (see Table 8). Table 8. Serial Port Pins Mnemonic SCLK SDIO CSB RESET Function SCLK (Serial Clock) is the serial shift clock in. SCLK is used to synchronize serial interface reads and writes. SDIO (Serial Data Input/Output) is a dual-purpose pin. The typical role for this pin is an input and output depending on the instruction being sent and the relative position in the timing frame. CSB (Chip Select Bar) is an active low control that gates the read and write cycles. Master Device Reset. When asserted, device assumes default settings. Active low. The falling edge of the CSB, in conjunction with the rising edge of the SCLK, determines the start of the framing. An example of the serial timing and its definitions can be found in Figure 53 and Table 10. During an instruction phase, a 16-bit instruction is transmitted. Data then follows the instruction phase and is determined by the W0 and W1 bits, which is 1 or more bytes of data. All data is composed of 8-bit words. The first bit of each individual byte of serial data indicates whether this is a read or write command. This allows the serial data input/output (SDIO) pin to change direction from an input to an output. Data can be sent in MSB or in LSB first mode. MSB first is default on power-up and can be changed by changing the configuration register. For more information about this feature and others, see Interfacing to High Speed ADCs via SPI at www.analog.com. Rev. 0 | Page 22 of 36 AD9626 HARDWARE INTERFACE CONFIGURATION WITHOUT THE SPI The pins described in Table 8 comprise the physical interface between the user’s programming device and the serial port of the AD9626. All serial pins are inputs, which is an open-drain output and should be tied to an external pull-up or pull-down resistor (suggested value of 10 kΩ). In applications that do not interface to the SPI control registers, the SPI SDIO/DCS and SPI SCLK/DFS pins can alternately serve as standalone CMOS-compatible control pins. When the device is powered up, it is assumed that the user intends to use the pins as static control lines for the duty cycle stabilizer. In this mode, the SPI CSB chip select should be connected to ground, which disables the serial port interface. This interface is flexible enough to be controlled by either PROMS or PIC mirocontrollers as well. This provides the user with an alternate method to program the ADC other than a SPI controller. Table 9. Mode Selection Mnemonic SPI SDIO/DCS If the user chooses not to use the SPI interface, some pins serve a dual function and are associated with a specific function when strapped externally to AVDD or ground during device poweron. The Configuration Without the SPI section describes the strappable functions supported on the AD9626. tDS tS tHI SPI SCLK/DFS External Voltage AVDD AGND AVDD AGND Configuration Duty cycle stabilizer enabled Duty cycle stabilizer disabled Twos complement enabled Offset binary enabled tCLK tDH tH tLO CSB SDIO DON’T CARE DON’T CARE R/W W1 W0 A12 A11 A10 A9 A8 A7 D5 Figure 53. Serial Port Interface Timing Diagram Rev. 0 | Page 23 of 36 D4 D3 D2 D1 D0 DON’T CARE 07099-019 SCLK DON’T CARE AD9626 Table 10. Serial Timing Definitions Parameter tDS tDH tCLK tS tH tHI tLO tEN_SDIO Timing (minimum, ns) 5 2 40 5 2 16 16 1 tDIS_SDIO 5 Description Setup time between the data and the rising edge of SCLK Hold time between the data and the rising edge of SCLK Period of the clock Setup time between CSB and SCLK Hold time between CSB and SCLK Minimum period that SCLK should be in a logic high state Minimum period that SCLK should be in a logic low state Minimum time for the SDIO pin to switch from an input to an output relative to the SCLK falling edge (not shown in Figure 53) Minimum time for the SDIO pin to switch from an output to an input relative to the SCLK rising edge (not shown in Figure 53) Table 11. Output Data Format Input (V) VIN+ − VIN− VIN+ − VIN− VIN+ − VIN− VIN+ − VIN− VIN+ − VIN− Condition (V) < 0.62 = 0.62 =0 = 0.62 > 0.62 + 0.5 LSB Offset Binary Output Mode D11 to D0 0000 0000 0000 0000 0000 0000 0000 0000 0000 1111 1111 1111 1111 1111 1111 Twos Complement Mode D11 to D0 0000 0000 0000 0000 0000 0000 0000 0000 0000 1111 1111 1111 1111 1111 1111 Rev. 0 | Page 24 of 36 Gray Code Mode (SPI Accessible) D11 to D0 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 OR 1 0 0 0 1 AD9626 MEMORY MAP READING THE MEMORY MAP TABLE RESERVED LOCATIONS Each row in the memory map table has eight address locations. The memory map is roughly divided into three sections: chip configuration register map (Address 0x00 to Address 0x02), transfer register map (Address 0xFF), and program register map (Address 0x08 to Address 0x2A). Undefined memory locations should not be written to other than their default values suggested in this data sheet. Addresses that have values marked as 0 should be considered reserved and have a 0 written into their registers during power-up. The Addr (Hex) column of the memory map indicates the register address in hexadecimal, and the Default Value (Hex) column shows the default hexadecimal value that is already written into the register, The Bit 7 (MSB) column is the start of the default hexadecimal value given. For example, Hexadecimal Address 0x09, clock, has a hexadecimal default value of 0x01. This means Bit 7 = 0, Bit 6 = 0, Bit 5 = 0, Bit 4 = 0, Bit 3 = 0, Bit 2 = 0, Bit 1 = 0, and Bit 0 = 1, or 0000 0001 in binary. The default value enables the duty cycle stabilizer. Overwriting this default so that Bit 0 = 0 disables the duty cycle stabilizer. For more information on this and other functions, consult the Interfacing to High Speed ADCs via SPI user manual at www.analog.com. Coming out of reset, critical registers are preloaded with default values. These values are indicated in Table 12. Other registers do not have default values and retain the previous value when exiting reset. DEFAULT VALUES LOGIC LEVELS An explanation of various registers follows: “Bit is set” is synonymous with “bit is set to Logic 1” or “writing Logic 1 for the bit.” Similarly, “clear a bit” is synonymous with “bit is set to Logic 0” or “writing Logic 0 for the bit.” Table 12. Memory Map Register Addr Bit 7 (Hex) Parameter Name (MSB) Chip Configuration Registers 00 chip_port_config 0 01 chip_id 02 chip_grade Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 LSB first Soft reset 1 1 Soft reset LSB first Bit 0 (LSB) Default Value (Hex) 0 0x18 8-bit chip ID, Bits[7:0] AD9626 = 0x3c 0 0 0 Speed grade: 00 = 170 MSPS 01 = 210 MSPS 10 = 250 MSPS Transfer Register FF device_update 0 0 0 0 ADC Functions 08 modes 0 0 PDWN: 0 = full (default) 1= standby 0 Readonly Default Notes/ Comments The nibbles should be mirrored by the user so that LSB or MSB first mode registers correctly, regardless of shift mode. Default is unique chip ID, different for each device. This is a read-only register. Child ID used to differentiate graded devices. X X X Readonly 0 0 0 SW transfer 0x00 Synchronously transfers data from the master shift register to the slave. 0 Internal power-down mode: 000 = normal (power-up, default) 001 = full power-down 010 = standby 011 = normal (power-up) Note: external PDWN pin overrides this setting 0x00 Determines various generic modes of chip operation. Rev. 0 | Page 25 of 36 AD9626 Addr (Hex) 09 Parameter Name clock OD test_io OF ain_config 0 14 output_mode 16 output_phase 17 flex_output_delay 18 flex_vref Bit 7 (MSB) 0 Bit 6 0 Bit 2 0 Bit 1 0 Bit 0 (LSB) Duty cycle stabilizer: 0= disabled 1= enabled (default) Bit 5 0 Bit 4 0 Bit 3 0 Reset PN23 gen: 1 = on 0 = off (default) Reset PN9 gen: 1 = on 0 = off (default) 0 0 0 0 0 Output enable: 0= enable (default) 1= disable Output clock polarity 1= inverted 0= normal (default) Output delay enable: 0= enable 1= disable 0 Interleave output mode: 1= enabled 0= disabled (default) 0 Output test mode: 0000 = off (default) 0001 = midscale short 0010 = +FS short 0011 = −FS short 0100 = checker board output 0101 = PN 23 sequence 0110 = PN 9 0111 = one/zero word toggle 1000 = unused 1001 = unused 1010 = unused 1011 = unused 1100 = unused (Format determined by output_mode) CML 0 0 Analog enable: input disable: 1 = on 1 = on 0 = off 0 = off (default) (default) Data format select: 0 Output 00 = offset binary invert: (default) 1 = on 01 = twos 0 = off complement (default) 10 = Gray code 0 Default Value (Hex) 0x01 0x00 0x00 0x00 0x03 Output clock delay: 00000 = 0.1 ns 00001 = 0.2 ns 00010 = 0.3 ns … 11101 = 3.0 ns 11110 = 3.1 ns 11111 = 3.2 ns Input voltage range setting: 10000 = 0.98 V 10001 =1.00 V 10010 = 1.02 V 10011 =1.04 V … 11111 = 1.23 V 00000 = 1.25 V 00001 = 1.27 V … 01110 = 1.48 V 01111 = 1.50 V Rev. 0 | Page 26 of 36 0x00 0x00 Default Notes/ Comments When set, the test data is placed on the output pins in place of normal data. GND L1 10NH R4 DNP C16 2 4 5 3 T5 4 2 5 PRI SEC 3 1 PRI SEC 6 1 Rev. 0 | Page 27 of 36 Figure 54. AD9601 Evaluation Board Schematic Page 1 GND GND XTALINPUT R3 50 GND R15 DNP 0.1UF C23 VCLK 6 VCLK GND 3 2 C74 0.1UF E20 E19 GND VCLK GND AVDD TRI_STATE 45 NC R86 10K R85 10K 0.1UF C61 51 E18 VOLT_CONTROL VCLK 52 5 VOLT_CONTROL 1 AVDD OUTPUT CVHD_956 Crystek Crystal U6 OPTIONAL ENCODE CIRCUITS DNP XTALINPUT 4 R90 00 GND CLK 49 0 R87 4 PRI SEC 3 0 J4 PRI SEC ETC1-1-13 nc 43 GND 44 ENCODE CLKCT U4 AD9626_CSP DRVDD ADT1-1WT 1 6 5 2 GND GND CLKCT VSPI E3 47 50 46 T2 CLK CLK R1 CLKB GND AVDD_FL AVDD_FL1 SPSCLK/DFS AVDD_CLK 42 41 CML AVDD_PIPE AVDD_PIPE1 AVDD_PIPE2 AINB AIN AVDD_PIPE3 AVDD_PIPE4 AVDD_PIPE5 RBIAS AVDD_REF SPSDIO/DCS AVDD_CLK1 48 R89 00 CML R17 0 DNP AVDD AVDD 40 39 38 37 36 35 34 33 32 31 30 DVDD2 R8 00 C18 AMPOUT- AVDD AVDD AVDD AVDD AVDD AVDD AVDD 29 E1 E2 DGND2 J3 5 2 4 0.1UF GND R9 DNP E8 RESETB PDN E4 E10 DCOB R14 DNP C20 DNP T6 GND R6 36 CML R5 36 AMPOUT+ E9 E7 E5 R10 1K DCO GND C19 0.1UF GND VSPI GND VSPI R13 1K CSB_DUT D0B GND GND 3 TOUTB C22 0.1UF GND GND 1 E6 CML TOUT TOUT CML TOUTB EVQ-Q2 2 OUT R11 1K AVDD P10 P9 GND GND DVDD1 ETC1-1-13 GND TINB 0.1UF GND CML nc TINB 1 SW3 P1 P17 P16 VSPI D0 CR2 TO MAKE LAYOUT AND PARASITIC LOADING SYMMETRICAL J2 GND Input T3 ADT1-1WT Alternate Options GND IN L8 0 ANALOG R12 10K GND R7 33 GND GND DGND1 L9 SPCSB 0.1UF C21 GND DNP P5 P4 P3 P2 D11B C15 0.1UF E32 D1 C75 28 D1B 3 27 D10 2 SCLK_DTP 26 DOR C17 CSB SDIO_ODM 25 optional DRVDD 24 DORB R16 33 GND 23 D11 CMLX 22 E31 E33 D2B 0.1UF 21 CR3 20 D9 11 10 9 6 7 8 13 4 10 14 3 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 8 15 2 9 12 16 1 7 RN4 50_OHMS RN3 50_OHMS 9 10 11 12 13 14 15 11 8 7 6 5 4 3 2 6 DRVDD GND 12 5 5 6 7 8 9 10 11 12 13 14 13 4 16 14 3 1 15 2 RN2 16 1 50_OHMS RN1 50_OHMS 5 D4 4 D4B 3 D3 2 D3B 1 PAD D5B D5 DVDD DGND D6B D6 D7B D7 D8B D8 CSB 57 1 19 D10B 1 2 18 CR2 17 56 3 16 D9B GND 15 DCOB DCO D0B D0 D1B D1 D2B D2 D3B D3 D4B D4 D5B D5 D6B D6 D7B D7 D8B D8 D9B D9 D10B D10 D11B D11 DORB DOR D1 D3 D5 D7 D9 D11 D0 D2 D4 D6 D8 D10 DOR GNDAB1 GNDAB2 GNDAB3 GNDAB4 GNDAB5 GNDAB6 GNDAB7 GNDAB8 GNDAB9 GNDAB10 GNDCD1 GNDCD2 GNDCD3 GNDCD4 GNDCD5 GNDCD6 GNDCD7 GNDCD8 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 D1 D2 D3 D4 D5 D6 D7 D8 D9 11 12 13 14 15 16 17 18 19 20 41 42 43 44 45 46 47 48 49 50 GNDCD10 GNDCD6 GNDCD7 D7 D8 GNDCD1 GNDCD2 GNDCD3 GNDCD4 D2 D3 D4 D5 A1 A2 A3 A4 A5 A6 B1 GNDAB1 B2 GNDAB2 B3 GNDAB3 B4 GNDAB4 B5 GNDAB5 B6 GNDAB6 GNDAB7 B8 A8 B7 GNDAB8 B9 A9 A7 GNDAB9 B10 A10 C1 GNDAB10 D1 C2 C3 C4 C5 C6 GNDCD5 D6 C7 C8 C9 GNDCD8 D9 C10 GNDCD9 D10 11 12 13 14 15 16 17 18 19 20 41 42 43 44 45 46 47 48 49 50 SDO_CHA SDI_CHA SCLK_CHA DCOB D1B D3B D5B D7B D9B D11B D0B D2B D4B D6B D8B D10B DORB HEADERM1469169_1 60 40 59 39 58 38 57 37 56 36 55 35 54 34 53 33 52 32 51 31 30 10 29 9 28 8 27 7 26 6 25 5 24 4 23 3 22 2 21 1 P11 CONNECTS TO J1 HEADERM1469169_1 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 GNDCD9 D10 GNDCD10 P7 CONNECTS TO J2 60 40 59 39 58 38 57 37 56 36 55 35 54 34 53 33 52 32 51 31 30 10 29 9 28 8 27 7 26 6 25 5 24 4 23 3 22 2 21 1 CSB1_CHA GND DCO GND 07099-053 GND GND GND AD9626 EVALUATION BOARD D2 55 GND 54 53 50 GND GND ADP3338 U10 +5V VAMPX 4 OUT EGND EGND 10UF C11 IN 3 OUT1 2 2 3 1 GND GND U7 ADP3338 U9 EGND T1 AVDDX 1.8V 1 GND 2 3 GND GND U8 FERRITE 4 4 EGND IN + GND 1UF Figure 55. AD9601 Evaluation Board Schematic Page 2 L7 3 OUT 2 FERRITE GND 1 VAMPX VAMP1 1UF GND L4 OUT1 AVDDX AVDD1 ADP3338 U12 DRVDDX1 499 R2 1.8V 4 PJ-102A L5 IN 3 VIN DRVDDX OUT 2 DRVDDX1 GND VIN GND 1 OUT1 VSPI P8 1UF DRVDD1 C6 R88 1 GND FERRITE C2 L3 VIN FERRITE GND GND C9 GND 0.1UF C36 10UF VSPI GND DRVDD GND + + ADP3338 U11 C4 FERRITE 0.1UF C26 3.3V VSPIEXTX 0.1UF C35 C30 0.1UF C31 0.1UF 0.1UF C39 0.1UF + GND VSPIEXT GND 10UF C54 C29 0.1UF VCLK GND C59 0.1UF C28 0.1UF 0.1UF 0.1UF P6 H1 MTHOLE6 H2 MTHOLE6 H3 MTHOLE6 H4 MTHOLE6 C12 + 10UF C62 0.1UF C66 0.1UF C13 VAMP1 AVDD1 GND GND DRVDD1 GND VSPIEXT1 GND C34 0.1UF C63 0.1UF 0.1UF C67 C64 0.1UF C14 0.1UF 10UF L12 FERRITE L13 FERRITE L14 FERRITE L15 FERRITE GND VAMP C68 + 0.1UF C69 C65 0.1UF VAMP AVDD DRVDD VSPIEXT C58 C8 10UF L2 OUT1 0.1UF 0.1UF C32 0.1UF C25 L6 0.1UF C72 C70 +5.0V 1.8V 1.8V 3.3V C57 C71 0.1UF C73 C56 C33 0.1UF IN 3 VIN VSPIEXT1 4 OUT VSPIEXTX FERRITE 2 GND 1 GND VCLK C27 8 7 6 Rev. 0 | Page 28 of 36 5 C5 4 C7 3 C1 GND 2 C3 1 0.1UF 0.1UF POWER OPTIONS 100PF 07099-054 C24 AVDD AD9626 VSPIEXTX 1UF 1UF 0 1UF VIN C10 1UF 1UF 0.1UF C60 0.1UF P14 P15 R34 DNP SMBMST SMBMST P12 SMBMST TINB2 TINB1 GND GND 50 R48 R49 DNP GND R35 DNP 2 4 3 GND R50 DNP 00 R51 GND 5 1 T7 TINB2 TINB1 2 4 5 3 TOUTB2 TOUT2 TOUTB2 PRI SEC 6 1 GND nc TOUT2 T4 ADT1-1WT R94 00 GND 25 R38 GND 25 R37 49.9 R33 00 R56 00 R53 GND 00 R52 00 R55 VCLK R57 00 E15 5 2 3 SYNCB CLK CLKB U1 .1UF C42 .1UF R62 4.12K R40 DNP OUT1 OUT1B OUT0 OUT0B C43 DNP R39 5 R45 5 AD9515 DNC; 27, 28 VCLK; 1, 4, 17, 20, 21, 24, 26, 29, 30 10K R54 AD9515(Opt_Clk Circuit) PRI SEC ETC1-1-13 00 R36 00 R47 C48 P13 SMBMST C40 C41 C49 DNP GND DNP DNP 0.1UF C47 VREF S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 Operational Amplifier RSET 6 7 8 9 10 11 12 13 14 15 16 25 18 19 22 23 GND R44 00 GND RGP RDP 16 100 R58 0.1UF C52 0.1UF 240 R60 VAMP GND E16 9 0.1UF C50 0.1UF R46 00 CLK CLK GND R41 00 C53 GND 10 11 12 GND CML E17 100 R59 GND VON VCC 8 GND VOP VCC VAMP C46 R91 00 .1UF 13 10K AD8352 C51 GND 240 R61 GND 7 Z1 VCM 14 GND 6 ENB 15 5 VIP C37 VIN 4 RDN 3 RGN 2 1 .1UF E14 R42 L11 DNP VCLK VCLK VCLK VCLK VCLK VCLK VCLK VCLK VCLK VCLK VCLK DNP S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 S0 GND GND GND GND GND GND GND GND GND GND GND AD9515 Logic Setup AMPOUT- AMPOUT+ R64 00 R66 00 R68 00 R70 00 10K 00 R74 00 R72 00 R63 00 R65 00 R67 00 R69 00 R76 00 Figure 56. AD9601 Evaluation Board Schematic Page 3 GND R78 00 32 GND_PAD R80 00 31 S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 R82 00 Rev. 0 | Page 29 of 36 R71 00 R43 C45 DNP R84 33 R73 00 E12 R75 00 E13 R77 00 C44 DNP R79 00 GND L10 DNP R81 00 C76 R83 00 VAMP AD9626 07099-055 CSB_DUT 4 Y2 SCLK_DTP VSPI 5 A2 GND 3 GND A1 VSPIEXT R19 10K R18 10K GND GND SDO_CHA SDIO_ODM 2 1 A1 A2 3 2 R26 10K GND 1 GND U5 NC7WZ07 U3 NC7WZ16 VCC 6 Y1 5 4 Y2 Y1 VCC 6 VSPI R25 1K VSPIEXT VSPI R27 1K CSB1_CHA SDI_CHA SCLK_CHA SPI CIRCUITRY 07099-056 R24 1K AD9626 Figure 57. AD9601 Evaluation Board Schematic Page 4 Table 13. Bill of Materials Qty 1 7 6 1 7 6 10 1 1 1 15 2 10 1 1 1 Reference Designator C1, C3, C4, C5, C6, C7, C10 C8, C9, C11, C12, C14, C55 C17 C27, C32, C33, C62, C63, C64, C71 C28, C29, C30, C31, C65, C70 C21, C22, C23, C24, C25, C26, C34, C35, C36, C39 CR4 CR2 F1 E1, E2, E3, E4, E5, E7, E8, E9, E10, E12, E13, E14, E31, E32, E33 J2, J3 L2, L3, L4, L5, L7, L12, L13, L14, L15, R88 P8 R1 R2 Package PCB 603 Description PCB, AD9230 customer evaluation board, Rev. G Capacitor, 1 μF, 0603, X5R, ceramic, 6.3 V, 10% Vendor Moog Panasonic Part Number AD9230revG ECJ-1VB0J105K 6032-28 Capacitor, 10 μF, tantalum, 16 V, 10% Kemet T491C106K016AS 402 402 Capacitor, 2.0 pF, 50 V, ceramic, 0402, SMD Capacitor, 0.33 μF, ceramic, X5R, 10 V, 10% Murata Murata GRM1555C1H2R0GZ01D GRM155R61A334KE15D 402 Capacitor, 120 pF, ceramic, C0G, 25 V, 5% Murata GRM1555C1H121JA01J 402 Capacitor, 0.1 μF, ceramic, X5R, 10 V, 10% Murata GRM155R71C104KA88D 603 Mini 3P 1210 LED green, SMT, 0603, SS-TYPE Diode, 30 V, 20 mA Fuse, 6.0 V, 2.2 A trip current resettable fuse Connector, header, 0.1" Panasonic Agilent Tyco/Raychem Samtec LNJ314G8TRA HSMS2812 NANOSMDC110F-2 TSW-150-08-G-S SMA end launch 1206 Connector, SMA PCB coax end launch, Johnson 142 Ferrite bead, BLM, 3 A, 50 Ω @ 100 MHz Johnson 142-0701-851 Murata BLM31PG500SN1L 201 603 Power jack, male, 2.1 mm power jack dc Resistor, 100 Ω, 0201, 1/20 W, 1% Resistor, 499 Ω, 0603, 1/10 W, 1% CUI Inc NIC Components NIC Components CP-102A-ND NRC02F1000TRF NRC06F4990TRF Rev. 0 | Page 30 of 36 AD9626 3 1 1 Reference Designator R5, R6 R7, R16 R10, R11, R13, R24, R25, R27 R12, R18, R19, R26, R15, C16, C18, C19, C20, R89, R90 RN1, RN2, RN3, RN4 L1, L8, L9 P9, P10 SW3 1 2 1 1 1 1 1 2 1 T1 T2,T3 U3 U5 U7 U8 U11 U9, U12 U4 603 805 EVQQ2F03W 2020 CD542 6-SC70 6-SC70 DO-214AA DO-214AB SOT-223 SOT-223 LFCSP56 2 P7, P11 HM-Zd PCB Qty 2 2 6 4 7 4 Package 402 402 402 Description Resistor, 36 Ω, 0402, 1/16 W, 1% Resistor, 15 Ω, 0402, 1/16 W, 5% Resistor, 1 kΩ, 0402, 1/16 W, 1% Vendor Panasonic Panasonic NIC Components Part Number ERJ-2GEJ360X ERJ-2RKF15R0X NRC04F1001TRF 402 Resistor, 10 kΩ, 0402, 1/16 W, 5% NIC Components NRC04J103TRF 402 Resistor, 0 Ω, 0402, 1/16 W, 5% NIC Components NRC04ZOTRF 0402x8 Resistor array, SMT 0402; 0 Ω, ¼ W, 5%, RESNEXB-2HV Resistor, 0 Ω, 0603, 1/10 W, 5% Resistor, 0 Ω, 0805, 1/8 W, 1% Switch, light touch SMD Panasonic EXB2HV050JV NIC Components NIC Components Panasonic NRC06ZOTRF NRC10ZOTRF P12937SCT-ND Ferrite bead, 5 A, 50 V, 190 Ω @ 100 MHz Transformer, 0.5 W, 30 mA IC, buffer, inverter, UHS dual SC70-6 IC, buffer, inverter, UHS dual OD out SC70-6 Diode, 50 V, 2 A Diode, 30 V, 3 A (SMC) Voltage regulator, 3.3 V, 1.5 A Voltage regulator, 1.8 V, 1.5 A AD9230 12-bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V ADC, LFCSP-56 Connector, 2-Pr, 10-column, high speed, HM-Zd, PCB-mounted Murata Mini-Circuits Fairchild Fairchild Micro Commercial Micro Commercial Analog Devices Analog Devices Analog Devices DLW5BSN191SQ2L ADT1-1WT+ NC7WZ16P6X NC7WZ07P6X S2A-TPMSTR-ND SK33-TPMSCT-ND ADP3339AKCZ-3.3 ADP3339AKCZ-1.8 AD9230BCPZ-xxx Tyco 6469169-1 Capacitor, tantalum, SMT 6032, 10 μF, 16 V, 10% Capacitor, 0.1 μF, ceramic, 10% Kemet Murata T491C106K016AS GRM155R71C104KA88D LED green, USS type 0603 Schottky diode Connector, header, 0.1" Panasonic Agilent Tyco/Raychem Samtec LNJ314G8TRA HSMS2812 NANOSMDC110F-2 TSW-150-08-G-S TSW-110-08-G-D Samtec TSW-110-08-G-D Connector, PCB coax SMA end launch, Johnson 142 Inductor, 10 nH SMA Johnson 142-0701-851 Murata Amphenol RF BLM31P500S ARFX1231-ND Do not install the following: 0 C2, C54 TAJD 0 402 C15, C37, C38, C40, C41, C61, C42, C43, C44, C45, C46, C47, C48, C49, C50, C51, C52, C53, C39, C56, C57, C58, C59, C74, C75, C60, C66, C67, C68, C69, C72 0 CR1 Led_ss 0 CR3 Diode 0 805 0 E6, E15, E16, E17, E18, E19, E20 0 J1 10-pin header 0 J4 SMA 0 0 L6 P12, P13, P14, P15 1206 Rev. 0 | Page 31 of 36 AD9626 0 0 Reference Designator R3, R14, R33, R34, R35, R48, R49 R42, R43, R54, R85, R86 R28, R29, R30, R31, R32 R37, R38 R39, R45 R58, R59 R60, R61 R8, R9, R17, R36, R40, R41, R44, R46, R47, R87, R50, R51, R52, R53, R55, R56, R57, R62, R63, R64, R65, R66, R67, R68, R69, R70, R71, R72, R73, R74, R75, R76, R77, R78, R79, R80, R81, R82, R83, R84 P1, P2, P16, P17 SW1 0 T4 0 0 0 0 0 0 0 0 T5, T6 U2 U6 U10 Z1 U1 P6 P6 Qty 0 0 0 0 0 0 0 0 Package 402 Description Resistor, 49.9 Ω Vendor Susumu Part Number RR0510R-49R9-D 402 Resistor, 10 kΩ NIC Components NRC04J103TRF 402 Resistor, 5 kΩ NIC Components NRC04F4991TRF 402 402 402 402 402 Resistor, 25 Ω Resistor, 5 Ω Resistor, 100 Ω Resistor, 240 Ω Resistor, 0 Ω NIC Components NIC Components NIC Components NIC Components NIC Components NRC04F24R9TRF NRC04J5R1TRF NRC04F1000TRF NRC04J241TRF NRC04ZOTRF 805 EVQQ2F03W Resistor, 0 Ω Switch, light touch SMD NIC Components Panasonic NRC10ZOTRF P12937SCT-ND Transformer, RF, 0.4 MHz to 800 MHz, SMD case style CD542 Balun PIC12F629 Cvhd_956 crystal Regulator AD8352 AD9515 8-pin power connector post 8-pin power connector top Mini-Circuits ADT1-1WT+ M/A-Com Microchip Tech MABA007159-0000 PIC12F629-I/SN CVHD_956 ADP3339AKCZ-5.0 Wieland Wieland Z5.530.0825.0 25.602.2853.0 sm-22 SOIC-8 Crystal SOT-223 16CSP4X4 16CSP8X8 Rev. 0 | Page 32 of 36 AD9626 OUTLINE DIMENSIONS 8.00 BSC SQ 0.30 0.23 0.18 0.60 MAX 0.60 MAX 56 43 42 PIN 1 INDICATOR TOP VIEW 1 4.45 4.30 SQ 4.15 EXPOSED PAD (BOTTOM VIEW) 7.75 BSC SQ 0.50 0.40 0.30 PIN 1 INDICATOR 14 29 28 15 0.30 MIN 12° MAX SEATING PLANE 0.80 MAX 0.65 TYP 0.50 BSC 0.05 MAX 0.02 NOM COPLANARITY 0.08 0.20 REF COMPLIANT TO JEDEC STANDARDS MO-220-VLLD-2 112805-0 1.00 0.85 0.80 6.50 REF Figure 58. 56-Lead Lead Frame Chip Scale Package [LFCSP_VQ] 8 mm × 8 mm Body, Very Thin Quad (CP-56-2) Dimensions shown in millimeters ORDERING GUIDE Model AD9626BCPZ-1701 AD9626BCPZ-2101 AD9626BCPZ-2501 AD9626-250EBZ1 1 Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C Package Description 56-Lead Lead Frame Chip Scale Package [LFCSP_VQ] 56-Lead Lead Frame Chip Scale Package [LFCSP_VQ] 56-Lead Lead Frame Chip Scale Package [LFCSP_VQ] CMOS Evaluation Board with AD9626BCPZ-250 Z = RoHS Compliant Part. Rev. 0 | Page 33 of 36 Package Option CP-56-2 CP-56-2 CP-56-2 AD9626 NOTES Rev. 0 | Page 34 of 36 AD9626 NOTES Rev. 0 | Page 35 of 36 AD9626 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D07099-0-11/07(0) Rev. 0 | Page 36 of 36