DEMO MANUAL DC1946A LTC6430 and LTC2158 15dB Differential Amplifier and 14-Bit, 310Msps Dual ADC Description Demonstration circuit 1946A supports the LTC®6430 and the LTC2158 high speed ADC. It was specially designed for applications that include an LTC6430, a high speed amplifier with 15dB of gain. The circuitry on the analog inputs is optimized for analog input frequencies from 50MHz up to 1GHz. Refer to the data sheet for proper input networks for different input frequencies Design files for this circuit board are available at http://www.linear.com/demo L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PScope is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Table 1. DC1946A DEMONSTRATION CIRCUIT ADC PART NUMBER AMPLIFIER PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE INPUT FREQUENCY 1946A LTC2158-14 LTC6430-15 14-BIT 310Msps 50-1000MHz Table 2. Performance Summary (TA = 25°C) PARAMETER CONDITION MIN Supply Voltage – ADC (V+) This Supply Must Provide Up to 800mA. 3.0 Supply Voltage – Amplifier (+5V) This Supply Must Provide Up to 500mA. This Pin Is Unregulated 4.75 TYP 5 Analog Input Range Logic Input Voltages Minimum Logic High 5.25 V 400 mVP-P 0.6 V V 350 mV Minimum Logic levels (100Ω Load, 3.5mA Mode, 1.25V Common Mode) 247 mV 10 Minimum Logic Levels (ENC– Tied to GND) Minimum Logic Levels (ENC– Not Tied to GND, 1.2V Common Mode) 310 0 Maximum Logic Level (ENC– Tied to GND) Encode Clock Level (Differential at J2) V Nominal Logic Levels (100Ω Load, 3.5mA Mode, 1.25V Common Mode) Sampling Frequency (Encode Clock Frequency) Encode Clock Level (Single-Ended at J2) UNIT 6 1.2 Maximum Logic Low Logic Output Voltages (Differential) MAX V 3.6 0.2 MHz V V dc1946af 1 DEMO MANUAL DC1946A Quick Start Procedure Demonstration circuit 1946A is easy to set up to evaluate the performance of the LTC2158 A/D converter. Refer to Figure 1 for proper measurement equipment setup and follow the procedure below: SETUP The DC1371 USB demonstration circuit was supplied with the DC1946A global demonstration circuit, follow the DC1371 Quick Start Guide to install the required software and for connecting the DC1371 to the DC1946A and to a PC. 3.0V TO 5V DIFFERENTIAL ANALOG INPUTS JUMPERS SHOWN IN THEIR DEFAULT POSITIONS +5V CHANNEL 1 CHANNEL 2 THE DC1946 CONNECTS TO THE DC1371 VIA AN FMC CONNECTOR SINGLE-ENDED ENCODE CLOCK Figure 1. DC1946A Setup (Zoom for Detail) 2 dc1946af DEMO MANUAL DC1946A Quick Start Procedure hardware setup SMAs J4 & J5: Channel 1 Analog Inputs: As a default the DC1946A is populated to accept a single-ended input. Apply a single-ended signal to J4. For use with a differential signal remove R3 and populate R11 with a 0Ω resistor. Apply a differential signal to these SMA connectors from a differential driver. These SMAs are positioned 0.8" apart to accommodate LTC differential driver boards. J6 & J7: Channel 2 Analog Inputs. As a default the DC1946A is populated to accept a single-ended input. Apply a single-ended signal to J6. For use with a differential signal remove R7 and populate R13 with a 0Ω resistor. Apply a differential signal to these SMA connectors from a differential driver. These SMAs are positioned 0.8" apart to accommodate LTC differential driver boards. J2 CLK+: Positive Encode Clock Input. As a default the demo board is populated to accept a single-ended clock input from a low jitter signal generator. For other population options see the encode clock section of this manual. J3 CLK–: Negative Encode Clock Input. As a default this input port is grounded to accommodate the single-ended clock drive. For other population options see the encode clock section of this manual. Turrets V+ : Positive input voltage for the ADC and digital buffers. This voltage feeds a regulator that supplies the proper voltages for the ADC and buffers. The voltage range for this turret is 3.3V to 5V. +5V: Positive input voltage for the LTC6430. Apply a 5V signal to this turret to power the LTC6430. This turret is connected to the amplifier directly and is not regulated. There is a resistor on the back of the board R14 that will connect the power pins of the two amplifiers. By removing this resistor each amplifier can be powered independently. SENSE: Optional Reference Voltage. This pin is connected directly to the SENSE pin of the ADC. Connect SENSE to a 1.25V external reference and the external reference mode is automatically selected. The external reference must be 1.25V ±25mV for proper operation. If no external voltage is supplied, this pin will be pulled up to VDD through a weak pull-up resistor. GND: Ground Connection. This demo board only has a single ground plane. This turret should be tied to the GND terminal of the power supply being used. Jumpers The DC1946A demonstration circuit should have the following jumper settings as default positions (per Figure 1) which configure the ADC in serial programming mode. In the default configuration JP1-JP2 should be left in the default locations. This will pull PAR/SER low putting the part in serial configuration mode. JP1-PAR/SER: Selects Parallel or Serial Programming Mode (Default: Serial). The DC1946A will not work in parallel programming mode unless a custom FPGA load is used. JP2-EEPROM: EEPROM Write Protect. For factory use only. Should be left in the enable (PROG) position. APPLYING POWER AND SIGNALS TO THE DC1946A DEMONSTRATION CIRCUIT If a DC1371 is used to acquire data from the DC1946A, the DC1371 must FIRST be connected to a powered USB port and provided an external 5V BEFORE applying +3V to +5.0V across the pins marked V+ and GND on the DC1946A. The 5V for the LTC6430 should be applied after the ADC is powered. DC1946A requires 3V for proper operation. Regulators on the board produce the voltages required for the ADC. The power for the LTC6430 is unregulated. The DC1946A demonstration circuit requires up to 800mA on V+ and 500mA on +5V. The DC1946A should not be removed or connected to the DC1371 while power is applied. dc1946af 3 DEMO MANUAL DC1946A Quick Start Procedure ANALOG INPUT NETWORK The input network of the DC1946A can be modified to accommodate various applications. In the default setup J4 and J6 are used as single-ended inputs. Onboard transformers are used to do a single-ended-to-differential translation to drive the LTC6430 differentially. If differential drive is desired both of the inputs are brought out to SMA connectors so the demo board can be driven with a differential source. To drive the demo board with a differential source simply remove R3 and R7 and populate R11 and R13 with 0Ω resistors. Then remove T1 and T2 and jump over the pads with 0Ω resistors. This will allow the board to be driven differentially from a differential source. The inputs SMA connectors for the input signals are 0.8" apart to accommodate LTC differential driver boards. In almost all cases, off board filters will be required on the analog input of the differential driver to produce data sheet SNR. The off board filters should be located close to the inputs of the differential driver to avoid reflections from impedance discontinuities at the driven end of a long transmission line. Most filters do not present 50Ω outside the passband. In some cases, 3dB to 10dB pads may be required to obtain low distortion. Apply the analog input signal of interest to the SMA connectors on the DC1946A marked J4 and J6. ENCODE CLOCK Apply an encode clock to the SMA connector on the DC1946A demonstration circuit board marked J2. As a default the DC1946A is populated to have a single-ended clock input. It is possible to modify the demo board. For the best noise performance, the encode input must be driven with a very low jitter signal source. The amplitude should be as large as possible up to 2VP-P or 10dBm. Using bandpass filters on the clock and the analog input will improve the noise performance by reducing the wideband noise power of the signals. In the case of the DC1946A, a bandpass filter used for the clock should be used prior to the DC1075A. Data sheet FFT plots are taken with 10-pole LC filters made by TTE (Los Angeles, CA) to suppress signal 4 generator harmonics, nonharmonically related spurs and broadband noise. Low phase noise Agilent 8644B generators are used with TTE bandpass filters for both the clock input and the analog input. When using a PECL or LVDS clock you can drive the DC1946A differentially through J2 and J3. From the default population, remove the resistors in the R33, R22 and R23 positions and populate 0Ω resistors in the R31, R32, R34, and R35 positions. Add the appropriate termination for your clock signal. R27, R28, R29, R30 and R26 are available to provide the proper termination for LVDS, PECL, or CML signaling. Blocking capacitors can be installed in the R44 and R45 positions if the common mode voltage of the clock is not compatible with the LTC2158. SOFTWARE The DC1371 is controlled by the PScope™ system software provided or downloaded from the Linear Technology website at http://www.linear.com/software/. If a DC1371 was provided, follow the DC1371 Quick Start Guide and the instructions below. To start the data collection software if “PScope.exe”, is installed (by default) in \Program Files\LTC\PScope\, double click the PScope icon or bring up the run window under the start menu and browse to the PScope directory and select PScope. If the DC1946A demonstration circuit is properly connected to the DC1371, PScope should automatically detect the DC1946A, and configure itself accordingly. If necessary the procedure below explains how to manually configure PScope. Under the “Configure” menu, go to “ADC Configuration....” Check the “Config Manually” box and use the following configuration options, see Figure 2: Manual Configuration settings: Bits: 14 Alignment: 16 FPGA Ld: S2157 Channs: 2 dc1946af DEMO MANUAL DC1946A Quick Start Procedure Figure 2: ADC Configuration Bipolar: Unchecked Positive-Edge Clk: Unchecked If everything is hooked up properly, powered and a suitable encode clock is present, clicking the “Collect” button should result in time and frequency plots displayed in the PScope window. Additional information and help for PScope is available in the DC1371 Quick Start Guide and in the online help available within the PScope program itself. SERIAL PROGRAMMING PScope has the ability to program the DC1946A board serially through the DC1371. There are several options available for the LTC2158 that are only available through serially programming. PScope allows all of these features to be tested. These options are available by first clicking on the “Set Demo Bd Options” icon on the PScope toolbar (Figure 3). Figure 4: Demobd Configuration Options Sleep Mode – Selects between normal operation, sleep modes: Off (Default): ADC is powered and active On: ADC is powered down Nap Mode – ADC core powers down while references stay active: Figure 3: PScope Toolbar This will bring up the menu shown in Figure 4. This menu allows any of the options available for the LTC2158 to be programmed serially. The LTC2158 family has the following options: Off (Default): ADC is powered and active On: ADC is put into nap mode Power Down B – Powers down channel 2 while references stay active: Off (Default): ADC is powered and active On: Channel 2 of ADC is powered down dc1946af 5 DEMO MANUAL DC1946A Quick Start Procedure Clock Invert – Selects the polarity of the CLKOUT signal: Test Pattern – Selects Digital output test patterns: Disable (Default): Normal CLKOUT polarity Off (Default): ADC data presented at output Enable: CLKOUT polarity is inverted All out = 1: All digital outputs are 1 Clock Delay – Selects the phase delay of the CLKOUT signal: All out = 0: All digital outputs are 0 None (Default): No CLKOUT delay Checkerboard: OF and D13-D0 Alternate between 1 01 0101 1010 0101 and 0 10 1010 0101 1010 on alternating samples. 45 deg: CLKOUT delayed by 45 degrees 90 deg: CLKOUT delayed by 90 degrees 135 deg: CLKOUT delayed by 135 degrees Alternating: Digital outputs alternate between all 1’s and all 0’s on alternating samples. Clock Duty Cycle – Enables or disables duty cycle stabilizer: ABP – Alternate bit polarity (ABP) mode Stabilizer off (Default): Duty cycle stabilizer disabled Off (Default): Disables alternate bit polarity Stabilizer on: Duty cycle stabilizer enabled Output Current – Selects the LVDS output drive current: On: Enables alternate bit polarity (Before enabling ABP, be sure the part is in offset binary mode) 1.75mA (Default): LVDS output driver current TP Enable – Enables test patterns 2.1mA: LVDS output driver current Disabled (Default): Disables test patterns, ADC data presented at output 2.5mA: LVDS output driver current 3.0mA: LVDS output driver current 3.5mA: LVDS output driver current 4.0mA: LVDS output driver current 4.5mA: LVDS output driver current Internal Termination – Enables LVDS internal termination: Off (Default): Disables internal termination On: Enables internal termination Outputs – Enables digital outputs: Enabled (Default): Enables digital outputs Enabled: Enables the test pattern Randomizer – Enables data output randomizer Off (Default): Disables data output randomizer On: Enables data output randomizer Two’s Complement – Enables two’s complement mode Off (Default): Selects offset binary mode On: Selects two’s complement mode Once the desired settings are selected hit OK and PScope will automatically update the register of the device on the DC1946A demo board. Disabled: Disables digital outputs 6 dc1946af DEMO MANUAL DC1946A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 1 14 C1, C3, C6, C8, C10, C16, C18, C20, C22, C24, C32, C41, C42, C53 CAP., NPO, 1000pF, 50V 5% 0402 MURATA, GRM1555C1H102JA01D 2 16 C2, C5, C11, C13, C14, C21, C25, C29, C34, C40, C50, C51, C52, C54, C55, C56 CAP., X5R, 0.1µF, 10V 10% 0402 AVX, 0402ZD104KAT2A 3 3 C4, C17, C30 CAP., X5R, 2.2µF, 10V 20% 0402 TAIYO YUDEN, LMK105BJ225MV-F 4 4 C7, C12, C46, C47 CAP., X5R, 0.47µF, 10V 10% 0402 TDK, C1005X5R1A474K 5 4 C9, C23, C26, C28 CAP., NPO, 68pF, 16V 5% 0402 TDK, C1005C0G1H680J 6 2 C15, C39 CAP., X5R, 1.0µF, 10V 10% 0402 AVX, 0402ZD105KAT2A 7 0 C19, C27, C48, C57, C58, C59, C60 CAP., OPT, 0402 OPTION 8 1 C31 CAP., TANT., 100µF 16V 10% 6032 KEMET, T491C107K016ZT 9 1 C33 CAP., X5R, 47µF, 16V 20% 1210 TAIYO YUDEN, EMK325BJ476MM-T 10 4 C35, C36, C37, C38 CAP., X7R, 47pF, 16V 10% 0402 AVX, 0402YC470KAT2A 11 4 C43, C44, C45, C49 CAP., X5R, 0.01µF, 16V 10% 0402 AVX, 0402YC103KAT2A 12 2 E1, E2 TEST POINT, TURRET, 0.094, PBF MILL-MAX, 2501-2-00-80-00-00-07-0 13 3 E3, E4, E5 TEST POINT, TURRET, 0.061, PBF MILL-MAX, 2308-2-00-80-00-00-07-0 14 2 JP1, JP2 HEADER, 3 PIN, 0.079 SULLINS, NRPN031PAEN-RC 15 1 J1 BGA CONNECTOR, 40X10 SAMTEC, SEAM-40-02.0-S-10-2-A-K-TR 16 2 J2, J3 CON., SMA JACK, STRAIGHT, THRU-HOLE AMPHENOL CONNEX, 132134 17 4 J4, J5, J6, J7 CON., SMA 50Ω EDGE-LAUNCH EMERSON, 142-0701-851 18 4 L1, L2, L3, L4 INDUCTOR, CER. CHIP, 560nH, 2%, 0603 COILCRAFT, 0603LS-561XGLB 19 1 L5 FERRITE BEAD, 33Ω @ 100MHz, 1206 MURATA, BLM31PG330SN1L 20 1 L6 RES., CHIP, 0Ω, 1/10W, 0603 VISHAY, CRCW06030000Z0EA 21 0 L7 (OPT) INDUCTOR, OPTION, 0603 OPTION 22 2 L8, L9 INDUCTOR, CER. CHIP, 120nH, 2%, 0402 COILCRAFT, 0402CS-R12XGLU 23 8 R1, R2, R16, R17, R20, R21, R38, R39 RES., CHIP, 49.9Ω, 1/16W, 1% 0402 VISHAY, CRCW040249R9FKED 24 7 R3, R7, R12, R33, R44, R45, R50 VISHAY, CRCW04020000Z0ED 25 0 R4, R6, R11, R13, R27, R28, R29, R30, RES., CHIP, OPT, 0402 R31, R32, R34, R35, R46, R47, R48, R49, R51, R52 OPTION 26 4 R5, R8, R10, R15 RES., CHIP, 348Ω, 1/16W, 1% 0402 VISHAY, CRCW0402348RFKED 27 2 R9, R37 RES., CHIP, 3k, 1/16W, 1% 0402 VISHAY, CRCW04023K00FKED 28 1 R14 RES., CHIP, 0Ω, 1/8W, 0805 VISHAY, CRCW08050000Z0EA 29 3 R18, R24, R25 RES., CHIP, 4.99k, 1/16W, 1% 0402 VISHAY, CRCW04024K99FKED 30 5 R19, R40, R41, R42, R43 RES., CHIP, 1k, 1/16W, 1% 0402 VISHAY, CRCW04021K00FKED 31 2 R22, R23 RES., CHIP, 5.1Ω, 1/16W, 1% 0402 VISHAY, CRCW04025R10FKED RES., CHIP, 0Ω, 1/16W, 0402 32 1 R26 RES., CHIP, 100Ω, 1/16W, 1% 0402 VISHAY, CRCW0402100RFKED 33 1 R36 RES., CHIP, 182k, 1/16W, 1% 0402 VISHAY, CRCW0402182KFKED 34 4 R53, R54, R55, R56 RES., CHIP, 150Ω, 1/16W, 1%, 0402 VISHAY, CRCW0402150RFKED dc1946af 7 DEMO MANUAL DC1946A Parts List ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER 35 3 T1, T2, T3 TRANSFORMER, RF,SMT, 1:1BALUN MACOM, MABA-007159-000000 36 0 T4, T5 (OPT) OPTION: TRANSFORMER, RF,SMT, 1:1BALUN MINI-CIRCUTS, ADTL2-18+ 37 1 U1 IC, DUAL 14-BIT ADC, QFN64 LINEAR TECH., LTC2158CUP-14#PBF 38 2 U2, U3 IC, 50Ω IF AMPLIFIER, QFN LINEAR TECH., LTC6430AIUF-15#PBF 39 1 U4 I.C., LOW DROPOUT REGULATOR, 3X3MM, DFN LINEAR TECH., LT3080EDD-1#PBF 40 1 U5 IC, SERIAL EEPROM, TSSOP MICROCHIP TECH., 24LC32A-I/ST 41 2 XJP1, XJP2 SHUNT, 2MM SAMTEC, 2SN-BK-G 8 dc1946af A B C D CLK- CLK+ SENSE GND J3 J2 E3 PAR SER JP1 V+ 1 1 3 2 1 5 PAR/SER C33 47uF 1210 E2 E1 VDD OPT OPT 0 OHMS R32 PAD VOUT VOUT VOUT C2 0.1uF C40 0.1uF C25 0.1uF R36 182K 9 1 2 3 C30 2.2uF C43 0.01uF OPT OPT C45 0.01uF R35 3 2 1 R34 4 5 T3 MABA-007159-000000 C44 0.01uF AIN2+ AIN2- AIN1- AIN1+ U4 VCTRL VIN LT3080EDD-1 5 8 R31 R33 R19 1K C39 1.0uF VIN 4 1. ALL RESISTORS AND CAPACITORS ARE 0402 NOTE: UNLESS OTHERWISE SPECIFIED C49 0.01uF C15 1.0uF 7 SET 4 V+ 3V-6V 4 R20 49.9 R21 49.9 R2 49.9 R1 49.9 R17 49.9 R16 49.9 + 5.1 R22 5.1 R23 C31 100uF 6032 L5 0 OHM RES. C52 0.1uF C48 OPT 100 R26 OPT 0603 L7 VDD C17 2.2uF 15 16 65 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VDD VDD GND VDD VDD GND AINA+ AINAGND SENSE VREF GND VCM GND AINBAINB+ GND VDD R45 0 OHMS R44 0 OHMS VDD 3K VDD VDD R9 CS SCK SDI SDO CUSTOMER NOTICE R29 OPT R27 OPT R28 OPT OPT R30 0.1uF C29 2.2uF C4 C14 0.1uF OVDD THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 GND PAD LTC2158-14 U1 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R39 49.9 R38 49.9 C13 0.1uF FERRITE BEAD, 33 OHMS 1206 R37 3K L6 3 VDD 2 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 2 SCALE = NONE APP ENG. C.MAYOTT PCB DES. M.HAWKINS C11 0.1uF DATE: N/A SIZE C50 0.1uF C51 0.1uF C46 0.47uF 10/18/2013 1 DEMO CIRCUIT 1946A IC NO. LTC2158CUP-14, LTC6430AIUF-15 SHEET 1 3 OF 3 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only C47 0.47uF OF- DB0_1- DB2_3- DB4_5- DB6_7- DB8_9- DB10_11- DB12_13- CLKOUT- DA0_1- DA2_3- DA4_5- DA6_7- DA8_9- DA10_11- DATE 10/18/2013 LTC2158 AND LTC6430 COMBO BOARD TECHNOLOGY C12 0.47uF OVDD OF+ DB0_1+ DB2_3+ DB4_5+ DB6_7+ DB8_9+ DB10_11+ DB12_13+ CLKOUT+ DA0_1+ DA2_3+ DA4_5+ DA6_7+ DA8_9+ DA10_11+ DA12_13- C.MAYOTT PRODUCTION DA12_13+ APPROVED DESCRIPTION 3 1 REVISION HISTORY REV TITLE: SCHEMATIC C7 0.47uF APPROVALS C5 0.1uF VDD 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 - ECO OVDD OGND DA4_5+ DA4_5DA2_3+ DA2_3DA0_1+ DA0_1CLKOUT+ CLKOUTDB12_13+ DB12_13DB10_11+ DB10_11DB8_9+ DB8_9OGND OVDD VDD PAR/SER CS SCK SDI SDO GND DA12_13+ DA12_13DA10_11+ DA10_11DA8_9+ DA8_9DA6_7+ DA6_7OVDD VDD GND ENC+ ENCGND OFOF+ DBO_1DBO_1+ DB2_3DB2_3+ DB4_5DB4_5+ DB6_7DB6_7+ OVDD 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 5 A B C D DEMO MANUAL DC1946A Schematic Diagram dc1946af 9 A B C D A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 A32 A33 A34 A35 A36 A37 A38 A39 A40 5 DB2_3+ DB6_7+ DB10_11+ DA2_3+ DA6_7+ DA10_11+ GND DP1_M2C_P DP1_M2C_N GND GND DP2_M2C_P DP2_M2C_N GND GND DP3_M2C_P DP3_M2C_N GND GND DP4_M2C_P DP4_M2C_N GND GND DP5_M2C_P DP5_M2C_N GND GND DP1_C2M_P DP1_C2M_N GND GND DP2_C2M_P DP2_C2M_N GND GND DP3_C2M_P DP3_C2M_N GND GND DP4_C2M_P DP4_C2M_N GND GND DP5_C2M_P DP5_C2M_N GND SEAM-10X40PIN J1A DB2_3- DB6_7- DB10_11- DA2_3- DA6_7- DA10_11- RES1 GND GND DP9_M2C_P DP9_M2C_N GND GND DP8_M2C_P DP8_M2C_N GND GND DP7_M2C_P DP7_M2C_N GND GND DP6_M2C_P DP6_M2C_N GND GND GBTCLK1_M2C_P GBTCLK1_M2C_N GND GND DP9_C2M_P DP9_C2M_N GND GND DP8_C2M_P DP8_C2M_N GND GND DP7_C2M_P DP7_C2M_N GND GND DP6_C2M_P DP6_C2M_N GND GND RES0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 B24 B25 B26 B27 B28 B29 B30 B31 B32 B33 B34 B35 B36 B37 B38 B39 B40 SEAM-10X40PIN VREF_A_M2C PRSNT_M2C_N GND CLK0_M2C_P CLK0_M2C_N GND LA02_P LA02_N GND LA04_P LA04_N GND LA07_P LA07_N GND LA11_P LA11_N GND LA15_P LA15_N GND LA19_P LA19_N GND LA21_P LA21_N GND LA24_P LA24_N GND LA28_P LA28_N GND LA30_P LA30_N GND LA32_P LA32_N GND VADJ SEAM-10X40PIN J1B H1 H2 H3 H4 H5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15 H16 H17 H18 H19 H20 H21 H22 H23 H24 H25 H26 H27 H28 H29 H30 H31 H32 H33 H34 H35 H36 H37 H38 H39 H40 J1H PG_M2C GND GND HA00_P_CC HA00_N_CC GND HA04_P HA04_N GND HA08_P HA08_N GND HA12_P HA12_N GND HA15_P HA15_N GND HA19_P HA19_N GND HB02_P HB02_N GND HB04_P HB04_N GND HB08_P HB08_N GND HB12_P HB12_N GND HB16_P HB16_N GND HB19_P HB19_N GND VADJ 4 SEAM-10X40PIN J1F OF- DB0_1- DB4_5- DB8_9- DB12_13- DA0_1- DA4_5- DA8_9- DA12_13- 4 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31 F32 F33 F34 F35 F36 F37 F38 F39 F40 VDD OF+ DB0_1+ DB4_5+ DB8_9+ DB12_13+ DA0_1+ DA4_5+ DA8_9+ DA12_13+ GND HA01_P_CC HA01_N_CC GND GND HA05_P HA05_N GND HA09_P HA09_N GND HA13_P HA13_N GND HA16_P HA16_N GND HA20_P HA20_N GND HB03_P HB03_N GND HB05_P HB05_N GND HB09_P HB09_N GND HB13_P HB13_N GND HB21_P HB21_N GND HB20_P HB20_N GND VADJ GND SEAM-10X40PIN J1E G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24 G25 G26 G27 G28 G29 G30 G31 G32 G33 G34 G35 G36 G37 G38 G39 G40 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E24 E25 E26 E27 E28 E29 E30 E31 E32 E33 E34 E35 E36 E37 E38 E39 E40 3 GND CLK1_C2M_P CLK1_C2M_N GND GND HA03_P HA03_N GND HA07_P HA07_N GND HA11_P HA11_N GND HA14_P HA14_N GND HA18_P HA18_N GND HA22_P HA22_N GND HB01_P HB01_N GND PB07_P HB07_N GND HB11_P HB11_N GND HB15_P HB15_N GND HB18_P HB18_N GND VIO_B_M2C GND 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. C.MAYOTT 2 SCALE = NONE M.HAWKINS PCB DES. APPROVALS K1 K2 K3 K4 K5 K6 K7 K8 K9 K10 K11 K12 K13 K14 K15 K16 K17 K18 K19 K20 K21 K22 K23 K24 K25 K26 K27 K28 K29 K30 K31 K32 K33 K34 K35 K36 K37 K38 K39 K40 2 APP ENG. VREF_B_M2C GND GND CLK1_M2C_P CLK1_M2C_N GND HA02_P HA02_N GND HA06_P HA06_N GND HA10_P HA10_N GND HA17_P_CC HA17_N_CC GND HA21_P HA21_N GND HA23_P HA23_N GND HB00_P_CC HB00_N_CC GND HB06_P_CC HB06_N_CC GND HB10_P HB10_N GND HB14_P HB14_N GND HB17_P_CC HB17_N_CC GND VIO_B_M2C SEAM-10X40PIN PG_C2M GND GND GBTCLK0_M2C_P GBTCLK0_M2C_N GND GND LA01_P_CC LA01_N_CC GND LA05_P LA05_N GND LA09_P LA09_N GND LA13_P LA13_N GND LA17_P_CC LA17_N_CC GND LA23_P LA23_N GND LA26_P LA26_N GND TCK TDI TDO 3P3VAUX TMS TRST_N GA1 3P3V GND 3P3V GND 3P3V J1D SEAM-10X40PIN J1K D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 D31 D32 D33 D34 D35 D36 D37 D38 D39 D40 CUSTOMER NOTICE J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16 J17 J18 J19 J20 J21 J22 J23 J24 J25 J26 J27 J28 J29 J30 J31 J32 J33 J34 J35 J36 J37 J38 J39 J40 CLKOUT+ CLKOUT- SEAM-10X40PIN J1J SEAM-10X40PIN GND CLK0_C2M_P CLK0_C2M_N GND GND LA00_P_CC LA00_N_CC GND LA03_P LA03_N GND LA08_P LA08_N GND LA12_P LA12_N GND LA16_P LA16_N GND LA20_P LA20_N GND LA22_P LA22_N GND LA25_P LA25_N GND LA29_P LA29_N GND LA31_P LA31_N GND LA33_P LA33_N GND VADJ GND J1G 8 VCC VSS 10 4 5 24LC32A U5 SCL SDA WP A2 A1 A0 6 5 7 3 2 1 C54 0.1uF DATE: N/A SIZE R25 4.99K 3 2 1 JP2 SEAM-10X40PIN GND DP0_C2M_P DP0_C2M_N GND GND DP0_M2C_P DP0_M2C_N GND GND LA06_P LA06_N GND GND LA10_P LA10_N GND GND LA14_P LA14_N GND GND LA18_P_CC LA18_N_CC GND GND LA27_P LA27_N GND GND SCL SDA GND GND GA0 12P0V GND 12P0V GND 3P3V GND J1C 10/18/2013 1 DEMO CIRCUIT 1946A IC NO. LTC2158CUP-14, LTC6430AIUF-15 SHEET 2 3 REV. OF 3 LTC2158 AND LTC6430 COMBO BOARD 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only PROG WP R18 4.99K EEPROM TECHNOLOGY C38 47pF R24 4.99K R42 1K R41 1K R40 1K R43 1K C37 47pF C36 47pF C35 47pF TITLE: SCHEMATIC SCK SDI SDO CS 1 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 A B C D DEMO MANUAL DC1946A Schematic Diagram dc1946af Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. A B C D -INB +INB -INA +INA R47 OPT 1 1 R6 OPT R46 OPT 1 1 3 2 1 T2_3 T2_2 T5 4 5 6 1000pF C1 R56 150 R8 348 R10 348 T2_3 T2_2 T2_1 4 R15 348 C26 68pF C9 68pF C28 68pF C27 OPT R51 OPT R55 150 1000pF C32 1000pF C20 R54 150 R5 348 C23 68pF C19 OPT R52 OPT R53 150 1000pF MINI-CIRCUITS, ADT2L-18+ T2_4 3 2 T1_2 T1_3 T2_5 1 T1_1 MINI-CIRCUITS, ADT2L-18+ 4 6 T1_4 3 5 C60 OPT T2_4 4 5 T2_5 T2_1 T1_3 T1_2 C59 OPT T2 MABA-007159 3 2 1 MABA-007159 C58 OPT T1_4 4 5 T1_5 T1 T1_1 TRANFORMER PART OPTION FOR T1 AND T2 5 T4 R7 0 OHMS OPT R13 0 OHMS R12 R4 OPT R3 0 OHMS OPT R11 0 OHMS R50 R48 OPT 2 T1_5 1 J7 J6 J5 J4 R49 OPT C57 OPT C18 4 6 5 4 3 2 1 6 5 4 3 2 1 NC NC NC NC NC NC 25 GND NC NC NC NC NC NC 25 GND 24 IN -IN 7 24 IN -IN 23 C41 1000pF 7 GND GND 8 23 GND VCC_A 22 GND PAD VCC C22 1000pF VCC_B 9 22 GND PAD VCC VCC 9 GND 8 VCC 21 NC NC 10 21 NC NC 10 3 13 14 15 16 17 18 UF24 4X4 LTC6430-15 U2 C21 0.1uF UF24 4X4 VCC_B 13 14 15 16 17 18 U3 LTC6430-15 C56 0.1uF 3 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 2 SCALE = NONE 0805 +5V APP ENG. C. MAYOTT L8 AIN1- AIN1+ 1 DEMO CIRCUIT 1946A IC NO. LTC2158CUP-14, LTC6430AIUF-15 SHEET 3 3 OF 3 REV. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only 1 LTC2158 AND LTC6430 COMBO BOARD TECHNOLOGY DATE: 10/18/2013 N/A SIZE TITLE: SCHEMATIC AIN2+ L9 120nH AIN2- 120nH R14 0 OHMS +5V APPROVALS VCC_B E5 E4 2 PCB DES. M.HAWKINS 1000pF C3 1000pF C8 1000pF C53 L4 560nH 0603 VCC_B VCC_A L1 560nH 0603 1000pF C16 1000pF C6 1000pF C10 L3 560nH 0603 VCC_A L2 560nH 0603 LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CUSTOMER NOTICE C34 0.1uF -OUT GND NC T_DIODE GND +OUT C42 1000pF VCC_A C55 0.1uF -OUT GND NC T_DIODE GND +OUT C24 1000pF 19 NC 20 NC NC 11 NC 12 19 NC 20 NC NC 11 NC 12 1 2 1 2 1 2 1 2 1 2 1 2 5 A B C D DEMO MANUAL DC1946A Schematic Diagram dc1946af 11 DEMO MANUAL DC1946A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged. This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC application engineer. Mailing Address: Linear Technology 1630 McCarthy Blvd. Milpitas, CA 95035 Copyright © 2004, Linear Technology Corporation 12 Linear Technology Corporation dc1946af LT 0514 • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2014