Ultralow Noise Drivers for Low Voltage ADCs ADA4930-1-EP Enhanced Product APPLICATIONS ADC drivers Single-ended-to-differential converters IF and baseband gain blocks Differential buffers Line drivers 14 –VS 13 –VS 12 PD +IN 2 11 –OUT –IN 3 10 +OUT +VS 8 +VS 7 +VS 5 +VS 6 VOCM 10371-001 9 +FB 4 Figure 1. 100 10 1 105°C 25°C –55°C 0 10 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz) Figure 2. Voltage Noise Spectral Density With the ADA4930-1-EP, differential gain configurations are easily realized with a simple external feedback network of four resistors determining the closed-loop gain of the amplifier. The ADA4930-1-EP is fabricated using Analog Devices, Inc., proprietary silicon-germanium (SiGe), complementary bipolar process, enabling it to achieve very low levels of distortion with an input voltage noise of only 1.2 nV/√Hz. GENERAL DESCRIPTION The ADA4930-1-EP is a very low noise, low distortion, high speed differential amplifier. It is an ideal choice for driving 1.8 V high performance ADCs with resolutions up to 14 bits from dc to 70 MHz. The adjustable output common-mode voltage setting allows the ADA4930-1-EP to match the input of the ADC for maximum dynamic range. The internal common-mode feedback loop provides exceptional output balance, suppression of evenorder harmonic distortion products, and dc level translation. Rev. A ADA4930-1-EP 10371-002 Supports defense and aerospace applications (AQEC standard) Extended temperature range: −55°C to +105°C Controlled manufacturing baseline One assembly/test site One fabrication site Enhanced product change notification Qualification data available on request –FB 1 VN (nV/√Hz) ENHANCED PRODUCT FEATURES 16 –VS FUNCTIONAL BLOCK DIAGRAMS Low input voltage noise: 1.2 nV/√Hz Low common-mode output: 0.9 V on single supply Extremely low harmonic distortion HD2/HD3: −104/−101 dBc at 10 MHz HD2/HD3: −79/−82 dBc at 70 MHz HD2/HD3: −73/−75 dBc at 100 MHz High speed −3 dB bandwidth: 1.35 GHz, G = 1 Slew rate: 3400 V/µs 0.1 dB gain flatness: 380 MHz Fast overdrive recovery: 1.5 ns Offset voltage: 0.5 mV typical Externally adjustable gain Differential-to-differential or single-ended-to-differential operation Adjustable output common-mode voltage Single-supply operation: 3.3 V or 5 V 15 –VS FEATURES The low dc offset and excellent dynamic performance of the ADA4930-1-EP make it well suited for a wide variety of data acquisition and signal processing applications. The ADA4930-1-EP is available in a 3 mm × 3 mm 16-lead LFCSP. The pinout has been optimized to facilitate printed circuit board (PCB) layout and minimize distortion. The ADA4930-1-EP is specified to operate over the −55°C to +105°C temperature range for 3.3 V or 5 V supply voltages. Additional application and technical information can be found in the ADA4930-1/ADA4930-2 data sheet. Document Feedback 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 ©2012–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com ADA4930-1-EP Enhanced Product TABLE OF CONTENTS Features .............................................................................................. 1 5 V VOCM to VO, cm Performance ...................................................6 Enhanced Product Features ............................................................ 1 5 V General Performance .............................................................6 Applications ....................................................................................... 1 Absolute Maximum Ratings ............................................................7 General Description ......................................................................... 1 Thermal Resistance .......................................................................7 Functional Block Diagrams ............................................................. 1 Maximum Power Dissipation ......................................................7 Revision History ............................................................................... 2 ESD Caution...................................................................................7 Specifications..................................................................................... 3 Pin Configuration and Function Descriptions..............................8 3.3 V Operation ............................................................................ 3 Outline Dimensions ..........................................................................9 3.3 V VOCM to VO, cm Performance ............................................... 4 Ordering Guide .............................................................................9 3.3 V General Performance ......................................................... 4 5 V Operation ............................................................................... 5 REVISION HISTORY 6/13—Rev. 0 to Rev. A Changes to Ordering Guide ............................................................ 9 10/12—Revision 0: Initial Version Rev. A | Page 2 of 12 Enhanced Product ADA4930-1-EP SPECIFICATIONS 3.3 V OPERATION VS = 3.3 V, VICM = 0.9 V, VOCM = 0.9 V, RF = 301 Ω, RG = 301 Ω, RL, dm = 1 kΩ, single-ended input, differential output, TA = 25°C, TMIN to TMAX = −55°C to +105°C, unless otherwise noted. Table 1. Parameter DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE HD2/HD3 Third-Order IMD Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Bias Current Drift Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Common-Mode Voltage Range Input Resistance Input Capacitance CMRR OUTPUT CHARACTERISTICS Output Voltage Linear Output Current Output Balance Error Test Conditions/Comments Min Typ Max Unit VO, dm = 0.1 V p-p VO, dm = 2 V p-p VO, dm = 0.1 V p-p VO, dm = 2 V step, 25% to 75% VO, dm = 2 V step, RL = 200 Ω G = 3, VIN, dm = 0.7 V p-p pulse 1430 887 380 2877 6.3 1.5 MHz MHz MHz V/µs ns ns VO, dm = 2 V p-p, fC = 10 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 30 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 70 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 100 MHz, TMIN to TMAX VO, dm = 1 V p-p/tone, fC = 70.05 MHz ± 0.05 MHz VO, dm = 1 V p-p/tone, fC = 140.05 MHz ± 0.05 MHz f = 100 kHz TMIN to TMAX f = 100 kHz −98/−97 −91/−88 −79/−79 −73/−73 91 86 1.15 1.2 3 dBc dBc dBc dBc dBc dBc nV/√Hz nV/√Hz pA/√Hz VIP = VIN = VOCM = 0 V, RL = open circuit, TMIN to TMAX TMIN to TMAX −3.1 −36 TMIN to TMAX −1.8 RF = RG = 10 kΩ, ∆VO = 0.5 V, RL = open circuit TMIN to TMAX −0.5 2.75 −24 −0.05 +0.1 64 61 0.3 Differential Common mode Common mode ∆VICM = 0.5 V dc; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX Each single-ended output; RF = RG = 10 kΩ Each single-ended output; RF = RG = 10 kΩ, TMIN to TMAX Each single-ended output; f = 1 MHz, THD ≤ 60 dBc f = 1 MHz Rev. A | Page 3 of 12 +3.1 −16 +1.8 1.2 150 3 1 −82 −76 0.11 −77 1.74 1.54 30 55 mV µV/°C µA µA/°C µA dB dB V kΩ MΩ pF dB dB V V mA dB ADA4930-1-EP Enhanced Product 3.3 V VOCM TO VO, CM PERFORMANCE Table 2. Parameter VOCM DYNAMIC PERFORMANCE −3 dB Bandwidth Slew Rate VOCM INPUT CHARACTERISTICS Input Voltage Range Input Resistance Input Offset Voltage Input Voltage Noise Gain CMRR Test Conditions/Comments Min VO, cm = 0.1 V p-p VO, cm = 2 V p-p, 25% to 75% VOS, cm = VO, cm − VOCM; VIP = VIN = VOCM = 0 V f = 100 kHz Typ Max 745 828 0.8 7.0 −25 0.99 TMIN to TMAX ∆VOCM = 0.5 V dc; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX Unit MHz V/μs 1.1 10.3 +31 8.3 +15.4 23.5 1 1.01 −83 −76 1.02 Typ Max −77 V kΩ mV nV/√Hz V/V V/V dB dB 3.3 V GENERAL PERFORMANCE Table 3. Parameter POWER SUPPLY Operating Range Quiescent Current per Amplifier +PSRR −PSRR POWER-DOWN (PD) PD Input Voltage Turn-Off Time Turn-On Time PD Pin Bias Current Enabled Disabled Test Conditions/Comments Min Enabled Enabled, TMIN to TMAX variation Disabled TMIN to TMAX ΔVICM = 0.5 V; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX ΔVICM = 0.5 V; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX 32 0.44 3.3 35 81 1.8 2.4 −74 −68 −87 −77 40 2.35 −70 −76 Unit V mA μA/C mA mA dB dB dB dB Disabled Enabled <0.8 >1.3 1 12 V V μs ns PD = 3.3 V PD = 0 V 0.09 97 μA μA OPERATING TEMPERATURE RANGE −55 Rev. A | Page 4 of 12 +105 °C Enhanced Product ADA4930-1-EP 5 V OPERATION VS = 5 V, VICM = 0.9 V, VOCM = 0.9 V, RF = 301 Ω, RG = 301 Ω, RL, dm = 1 kΩ, single-ended input, differential output, TA= 25°C, TMIN to TMAX = −55°C to +105°C, unless otherwise noted. Table 4. Parameter DYNAMIC PERFORMANCE −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate Settling Time to 0.1% Overdrive Recovery Time NOISE/HARMONIC PERFORMANCE HD2/HD3 Third-Order IMD Input Voltage Noise Input Current Noise DC PERFORMANCE Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Bias Current Drift Input Offset Current Open-Loop Gain INPUT CHARACTERISTICS Input Common-Mode Voltage Range Input Resistance Input Capacitance CMRR OUTPUT CHARACTERISTICS Output Voltage Linear Output Current Output Balance Error Test Conditions/Comments Min Typ Max Unit VO, dm = 0.1 V p-p VO, dm = 2 V p-p VO, dm = 0.1 V p-p VO, dm = 2 V step, 25% to 75% VO, dm = 2 V step, RL = 200 Ω G = 3, VIN, dm = 0.7 V p-p pulse 1350 937 369 3400 6 1.5 MHz MHz MHz V/µs ns ns VO, dm = 2 V p-p, fC = 10 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 30 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 70 MHz, TMIN to TMAX VO, dm = 2 V p-p, fC = 100 MHz, TMIN to TMAX VO, dm = 1 V p-p/tone, fC = 70.05 MHz ± 0.05 MHz VO, dm = 1 V p-p/tone, fC = 140.05 MHz ± 0.05 MHz f = 100 kHz TMIN to TMAX f = 100 kHz −104/−101 −91/−93 −79/−82 −73/−75 94 90 1.2 1.3 2.8 dB dBc dBc dBc dBc dBc nV/√Hz nV/√Hz pA/√Hz VIP = VIN = VOCM = 0 V, RL = open circuit, TMIN to TMAX TMIN to TMAX −3.1 −34 TMIN to TMAX −0.82 RF = RG = 10 kΩ, ΔVO = 1 V, RL = open circuit TMIN to TMAX −0.15 1.8 −23 −0.05 +0.1 64 61 0.3 Differential Common mode Common mode ∆VICM = 1 V dc; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX Each single-ended output; RF = RG = 10 kΩ, TMIN to TMAX Each single-ended output; f = 1 MHz, TDH ≤ 60 dBc f = 1 MHz Rev. A | Page 5 of 12 +3.1 −15 +0.82 2.8 150 3 1 −82 −76 0.18 −77 3.38 30 55 mV µV/°C µA µA/°C µA dB dB V kΩ MΩ pF dB dB V mA dB ADA4930-1-EP Enhanced Product 5 V VOCM TO VO, CM PERFORMANCE Table 5. Parameter VOCM DYNAMIC PERFORMANCE −3 dB Bandwidth Slew Rate VOCM INPUT CHARACTERISTICS Input Voltage Range Input Resistance Input Offset Voltage Input Voltage Noise Gain CMRR Test Conditions/Comments Min VO, cm = 0.1 V p-p VO, cm = 2 V p-p, 25% to 75% VOS, cm = VO, cm − VOCM; VIP = VIN = VOCM = 0 V f = 100 kHz Typ Max 740 1224 0.5 7.0 −25 0.99 TMIN to TMAX ∆VOCM = 1.5 V; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX 8.3 +0.35 23.5 1 1 −80 −76 Unit MHz V/µs 2.3 10.2 +15 1.02 −77 V kΩ mV nV/√Hz V/V V/V dB dB 5 V GENERAL PERFORMANCE Table 6. Parameter POWER SUPPLY Operating Range Quiescent Current per Amplifier +PSRR −PSRR POWER-DOWN (PD) PD Input Voltage Turn-Off Time Turn-On Time PD Pin Bias Current Enabled Disabled Test Conditions/Comments Min Enabled Enabled, TMIN to TMAX variation Disabled TMIN to TMAX ΔVICM = 1 V; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX ΔVICM = 1 V; RF = RG = 10 kΩ, RL = open circuit TMIN to TMAX 31.1 0.45 Typ 5 34 74.5 1.8 2.7 −74 −70 −91 −78 Max 38.4 2.6 −71 −75 Unit V mA µA/°C mA mA dB dB dB dB Disabled Enabled <2.5 >3 1 12 V V µs ns PD = 5 V PD = 0 V 0.09 97 µA µA OPERATING TEMPERATURE RANGE −55 Rev. A | Page 6 of 12 +105 °C Enhanced Product ADA4930-1-EP ABSOLUTE MAXIMUM RATINGS Rating 5.5 V See Figure 3 −65°C to +125°C −55°C to +105°C 300°C 150°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 θJA is specified for the device (including exposed pad) soldered to a high thermal conductivity 2s2p circuit board, as described in EIA/JESD51-7.The θJA for the 16-Lead LFCSP(exposed pad) package is 81.6 °C/W. MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the ADA4930-1-EP package is limited by the associated rise in junction temperature (TJ) on the die. At approximately 150°C, which is the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit can change the stresses that the package exerts on the die, permanently shifting the parametric performance of the ADA4930-1-EP. Exceeding a junction temperature of 150°C for an extended period can result in changes in the silicon devices, potentially causing failure. Airflow increases heat dissipation, effectively reducing θJA. In addition, more metal directly in contact with the package leads/ exposed pad from metal traces, through holes, ground, and power planes reduces θJA. Figure 3 shows the maximum safe power dissipation vs. the ambient temperature for the ADA4930-1-EP single 16-lead LFCSP (81.6°C/W) on a JEDEC standard 4-layer board. 3.0 TJ = 150°C 2.5 2.0 16-LEAD LFCSP 1.5 1.0 0.5 0.0 –55 –35 –15 5 25 45 65 85 105 AMBIENT TEMPERATURE (°C) Figure 3. Maximum Power Dissipation vs. Ambient Temperature, 4-Layer Board ESD CAUTION Rev. A | Page 7 of 12 10371-004 Parameter Supply Voltage Power Dissipation Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) Junction Temperature The power dissipated in the package (PD) is the sum of the quiescent power dissipation and the power dissipated in the package due to the load drive. The quiescent power is the voltage between the supply pins (VS) times the quiescent current (IS). The power dissipated due to the load drive depends on the particular application. The power due to load drive is calculated by multiplying the load current by the associated voltage drop across the device. RMS voltages and currents must be used in these calculations. MAXIMUM POWER DISSIPATION (W) Table 7. ADA4930-1-EP Enhanced Product 13 –VS 14 –VS 15 –VS 16 –VS PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 12 PD –FB 1 11 +OUT ADA4930-1-EP TOP VIEW (Not to Scale) –IN 3 10 –OUT +FB 4 VOCM +VS 8 +VS 7 +VS 6 +VS 5 9 NOTES 1. EXPOSED PADDLE. THE EXPOSED PAD IS NOT ELECTRICALLY CONNECTED TO THE DEVICE. IT IS TYPICALLY SOLDERED TO GROUND OR A POWER PLANE ON THE PCB THAT IS THERMALLY CONDUCTIVE. 10371-005 +IN 2 Figure 4. Pin Configuration Table 8. Pin Function Descriptions Pin No. 1 2 3 4 5 to 8 9 10 11 12 13 to 16 Mnemonic −FB +IN −IN +FB +VS VOCM +OUT −OUT PD −VS EPAD Description Negative Output for Feedback Component Connection. Positive Input Summing Node. Negative Input Summing Node. Positive Output for Feedback Component Connection. Positive Supply Voltage. Output Common-Mode Voltage. Positive Output for Load Connection. Negative Output for Load Connection. Power-Down Pin. Negative Supply Voltage. Exposed Paddle. The exposed pad is not electrically connected to the device. It is typically soldered to ground or a power plane on the PCB that is thermally conductive. Rev. A | Page 8 of 12 Enhanced Product ADA4930-1-EP OUTLINE DIMENSIONS 0.30 0.23 0.18 0.50 BSC 13 PIN 1 INDICATOR 16 1 12 EXPOSED PAD 1.45 1.30 SQ 1.15 4 9 TOP VIEW 0.80 0.75 0.70 0.50 0.40 0.30 8 0.25 MIN BOTTOM VIEW 0.05 MAX 0.02 NOM COPLANARITY 0.08 0.20 REF SEATING PLANE 5 FOR PROPER CONNECTION OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. COMPLIANT TO JEDEC STANDARDS MO-220-WEED. 111808-A PIN 1 INDICATOR 3.10 3.00 SQ 2.90 Figure 5. 16-Lead Lead Frame Chip Scale Package [LFCSP_WQ] 3 mm × 3 mm Body, Very Very Thin Quad (CP-16-21) Dimensions shown in millimeters ORDERING GUIDE Model 1 ADA4930-1SCPZ-EPR2 ADA4930-1SCPZ-EPR7 ADA4930-1SCPZ-EPRL 1 Temperature Range −55°C to +105°C −55°C to +105°C −55°C to +105°C Package Description 16-Lead LFCSP_WQ 16-Lead LFCSP_WQ 16-Lead LFCSP_WQ Z = RoHS Compliant Part. Rev. A | Page 9 of 12 Package Option CP-16-21 CP-16-21 CP-16-21 Ordering Quantity 250 1,500 5,000 Branding H2X H2X H2X ADA4930-1-EP Enhanced Product NOTES Rev. A | Page 10 of 12 Enhanced Product ADA4930-1-EP NOTES Rev. A | Page 11 of 12 ADA4930-1-EP Enhanced Product NOTES ©2012–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D10371-0-6/13(A) Rev. A | Page 12 of 12