EVAL-AD5791SDZ User Guide UG-1152 One Technology Way * P.O. Box 9106 * Norwood, MA 02062-9106, U.S.A. * Tel: 781.329.4700 * Fax: 781.461.3113 * www.analog.com Evaluation Board for the AD5791 1 ppm 20-Bit, 1 LSB INL, Voltage Output DAC with Single and Dual Supply The evaluation board also integrates a power solution utilizing the ADP5070 switching regulator and linear regulators (ADP7118 and ADP7182) to generate a bipolar supply of up to -15 V and +15 V from a +3.3 V single supply. Alternatively, the DAC can be supplied with linear power supplies via the on-board connectors (J11 and J13). FEATURES Full-featured evaluation board for the AD5791 with the ADP5070 power solution Power Solution generated from single 3.3 V supply. PC control in conjunction with Analog Devices, Inc., EVAL-SDP-CB1Z SDP PC software for control A daughter board connected to the top right of the EVALAD5791SDZ includes a voltage reference to externally apply to the DAC. EVALUATION KIT CONTENTS EVAL-AD5791SDZ evaluation board EV-ADR445-REFZ reference board AD5791 evaluation software The EVAL-SDP-CB1Z SDP board allows the EVAL-AD5791SDZ evaluation board to be controlled through the USB port of a Windows(R)-based PC featuring Windows XP or later when using the AD5791 evaluation software. GENERAL DESCRIPTION This user guide supports the EVAL-AD5791SDZ evaluation board, Revision B. UG-185 supports previous revisions of the evaluation board. The AD5791 is a high precision, 20-bit DAC, designed to meet the requirements of precision control applications. The output range of the AD5791 is configured by two reference voltage inputs. The device is specified to operate with a dual power supply of up to 33 V. The EVAL-AD5791SDZ is a full-featured evaluation board, designed for the easy evaluation of all features of the AD5791 voltage output, 20-bit digital-to-analog converter (DAC). The AD5791 pins are accessible at on-board connectors for external connection. The evaluation board can be controlled by two means: via the on-board connector (J12) or via the system demonstration platform (SDP) connector (J14). Complete specifications for the AD5791 are available in the AD5791 data sheet available from Analog Devices, which must be consulted in conjunction with this user guide when using the evaluation board. 16010-101 EVALUATION BOARD PHOTOGRAPH Figure 1. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. B | Page 1 of 25 UG-1152 EVAL-AD5791SDZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Evaluation Board Software ...............................................................8 Evaluation Kit Contents ................................................................... 1 Software Installation .....................................................................8 General Description ......................................................................... 1 Software Operation .......................................................................8 Evaluation Board Photograph......................................................... 1 Main Window ................................................................................9 Revision History ............................................................................... 2 Evaluation Board Schematics and Artwork ................................ 11 Evaluation Board Hardware ............................................................ 3 AD5791 Carrier Board .............................................................. 11 Power Supplies and Default Link Options ................................ 3 ADR445 Reference Voltage Daughter Board ......................... 17 Power Solution (ADP5070)--Single-Supply Option ............... 4 LTZ1000 Reference Voltage Daughter Board ......................... 19 Bench Power Supply--Dual Supply Option ............................. 4 LTC6655 Reference Voltage Daughter Board ......................... 21 Voltage Reference Daughter Board ............................................ 4 Ordering Information .................................................................... 23 On-Board Connectors ................................................................. 7 Bill of Materials ........................................................................... 23 REVISION HISTORY 6/2019--Rev. A to Rev. B Changes to Power Supplies and Default Link Options Section, Table 1, and Figure 2 ........................................................................ 3 Changes to Power Solution (ADP5070)--Single-Supply Option Section and Bench Power Supply--Dual Supply Option Section ................................................................................................ 4 Changes to LTZ1000 and LTC6655 Reference Boards Section .... 5 Changes to Table 3 ............................................................................ 6 Changes to Figure 12 ...................................................................... 11 Changes to Figure 15 ...................................................................... 14 Changes to Figure 17 and Figure 18 ............................................. 16 Changes to Figure 19 ...................................................................... 17 Changes to Figure 29 ...................................................................... 23 Changes to Table 6 .......................................................................... 24 6/2018--Rev. 0 to Rev. A Added Figure 5; Renumbered Sequentially ...................................5 Changes to LTZ1000 and LTC6655 Reference Boards Section ........5 Added LTC6655 Reference Voltage Daughter Board Section and Figure 27 .......................................................................................... 22 Added Figure 28 to Figure 31 ....................................................... 23 Added Table 9 ................................................................................. 26 1/2018--Revision 0: Initial Version Rev. B | Page 2 of 25 EVAL-AD5791SDZ User Guide UG-1152 EVALUATION BOARD HARDWARE The analog and digital planes are connected at one location close to the DAC. To avoid ground loop problems, do not connect AGND and DGND elsewhere in the system. POWER SUPPLIES AND DEFAULT LINK OPTIONS The EVAL-AD5791SDZ evaluation board can be powered using the on-board ADP5070 from a single voltage of 3.3 V to +5 V. The voltage sources available are an external single supply via the J11 connector and a supply sourced from the SDP controller board (EVAL-SDP-CB1Z). Table 1. Quick Start Jumper Configuration for ADP5070 and Bench Supply Alternatively, the J13 connector can provide power to the board, instead of the ADP5070, and J13 is intended for use with wellregulated bench supplies. See Figure 2 for a functional block diagram. With any of the possible options, set the link options on the evaluation board for the required operating setup first, before supplying the evaluation board. Each supply is decoupled to the relevant ground plane with 10 F and 0.1 F capacitors. Each device supply pin is again decoupled with a 10 F and 0.1 F capacitor pair to the relevant ground plane. Link No. LK2 ADP5070 with LDOs Inserted ADP5070 Inserted LK5 LK6 Removed Removed Inserted Inserted LK7 Removed Inserted LK8 LK9 LK10 B B B B B B Bench Supply Removed Inserted Not applicable Not applicable B A A LK5 ADP7118 VOLTAGE REFERENCE DAUGHTER BOARD LK6 ADP7118 J11 A LK8 B LK10 LK1 J12 PIN10 +3.3V SDP A LK2 LK7 DGND A B IOVCC VREF C ADP5070 VCC ADP7182 AD5791 VDD B LK9 A VSS J13 VSS VDD AGND Figure 2. Powering the EVAL-AD5791SDZ Evaluation Board Rev. B | Page 3 of 25 16010-001 VCC UG-1152 EVAL-AD5791SDZ User Guide POWER SOLUTION (ADP5070)--SINGLE-SUPPLY OPTION The EVAL-AD5791SDZ board is populated with an ADP5070 switching regulator. This regulator is preceded by voltage regulators (ADP7118 and ADP7182) that can be bypassed if required. The supplies generated from the ADP5070 alone or with the addition of the voltage regulators are -15 V and +15 V from a +3.3 V to +5V single supply. Link LK6 and Link LK7 must be inserted when the voltage regulators are bypassed. The circuit was designed using the ADIsimPower toolset, which selects the components, generates the schematic and bill of materials, and displays the performance specifications. Visit the ADP5070 product page to download the design tools. The ADP5070 requires a minimum voltage supply of 3.3 V for proper operation. Following the jumper configuration in Table 1 for the ADP5070 alone or the ADP5070 with low dropout regulators (LDOs) options, the evaluation board is supplied via the on-board J11 connector with an external 3.3 V single supply. VOLTAGE REFERENCE DAUGHTER BOARD The daughter board inserted into Connector J1, Connector J4, and Connector J9 (available at the top right corner of the EVALAD5791SDZ evaluation board) includes a voltage reference. The voltage supplied by the voltage reference is gained up and inverted to provide the positive and negative reference voltages required by the AD5791, which are routed to the EVAL-AD5791SDZ board via the J4 connector. ADR445 Reference Board The EVAL-AD5791SDZ evaluation kit provides the EV-ADR445REFZ reference board to complete the hardware required to evaluate the AD5791. The ADR445 is a 5 V low noise reference with 3 ppm/C maximum temperature drift and 2.25 V p-p noise specifications across the operating temperature range. Figure 3 shows the typical integral nonlinearity (INL) performance. 1.0 ADR445 REFERENCE EXTERNAL SUPPLY ON J13 VDD = +15V VSS = -15V 3458A DMM, NPLC = 10 STEP SIZE = 1024 TA = 25C 0.5 The J11 connector can be supplied with a range of 3.3 V to 5 V when Link LK5 is inserted, or with a range of 3.3 V to 18 V when Link LK5 is removed. INL ERROR (LSB) 0 Link LK8 must be inserted to Position B if the board is supplied with a voltage larger than 3.3 V via the on-board J11 or J12 connectors. Link LK1 must be inserted to Position A at all times. Refer to Table 3 for full link options. -0.5 -1.0 -1.5 -2.0 The evaluation board can be powered using a bench supply to allow all output voltage ranges of the AD5791. A headroom and footroom of at least 2.5 V is required on the dual supply. It is important that the voltage across the negative analog supply (VSS) and positive analog supply (VDD) does not exceed the absolute maximum rating of 34 V. Otherwise, device reliability can be affected. Following the jumper configuration in Table 1 for the bench supply configuration, supply the evaluation board with a dual supply of VSS = -15 V and VDD = 15 V via the J13 connector. The AD5791 also requires users to apply a single supply of 3.3 V to 5 V to the VCC pin and a single supply of 3.3 V to the IOVCC pin that can be sourced via the J11 connector or the on-board J12 connector. Select the position of Link LK8 depending on the preferred source to supply the VCC pin and the IOVCC pin. Link LK8 must be inserted to Position B if the board is supplied with a voltage larger than 3.3 V via the on-board J11 or J12 connectors. Select the position of Link LK1 to Position A at all times. Refer to Table 3 for full link options. -2.5 0 200000 400000 600000 800000 1000000 DAC CODE 16010-103 BENCH POWER SUPPLY--DUAL SUPPLY OPTION Figure 3. AD5791 with ADR445 INL Performance Link JP1 selects the source of the reference voltage between the ADR445 and an external 5 V reference voltage applied at the VR_EXT connector. Refer to Table 2 for the link details. Table 2. JP1 Link Reference Voltage Selection JP1 Link Position A B Rev. B | Page 4 of 25 Reference Voltage Selection ADR445 5 V external reference voltage applied at VR_EXT connector EVAL-AD5791SDZ User Guide UG-1152 LTZ1000 and LTC6655 Reference Boards 1.0 The EV-LTZ1000-REFZ and EV-LTC6655-REFZ reference boards, including the LTZ1000 and LTC6655 voltage references respectively, are also available to evaluate the AD5791. 0.8 The LTC6655 reference board offers improved noise and temperature drift performance over the ADR445 solution. The LTC6655 is a low noise, low drift precision reference with 2 ppm/C temperature drift and 1.25 V p-p noise. Figure 5 shows the typical INL performance of the AD5791 using the LTC6655 reference. A minimum external unipolar supply of 3.3 V is required to supply the EVAL-AD5791SDZ with the EV-LTZ1000-REFZ board or with the EV-LTC6655-REFZ board combination. Alternatively, external dual supplies can supply the motherboard and daughter board. 0.5 0.4 0.2 0.1 0 -0.1 -0.2 LTZ1000 REFERENCE EXTERNAL SUPPLY ON J13 V = +15V V = -15V 3458A DMM, NPLC = 10 STEP SIZE = 1024 T = 25C -0.3 -0.4 -0.5 0 200000 400000 600000 800000 1000000 DAC CODE 16010-104 INL ERROR (LSB) 0.3 Figure 4. AD5791 with LTZ1000 INL Performance Rev. B | Page 5 of 25 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 0 200000 400000 600000 800000 1000000 CODE Figure 5. AD5791 with LTC6655 INL Performance 16010-105 INL ERROR (LSB) The LTZ1000 reference board components maintain the 1 ppm accuracy of the AD5791. The LTZ1000 is a 7.2 V ultraprecision reference specified with 0.05 ppm/C temperature drift and ultralow 1.2 V p-p noise. The voltage reference is used in conjunction with low drift amplifiers (ADA4077-2) and a low drift, thermally matched resistor for the scaling and gain circuits. Place a cover over the reference board to reduce thermal errors due to air currents flowing over the reference board. Figure 4 shows the typical INL performance using the LTZ1000 reference. 0.6 UG-1152 EVAL-AD5791SDZ User Guide Table 3. Link Options Link No. LK1 LK2 LK3 Description This link selects the source of the digital power supply from Connector J11. Position A must be selected at all times. Position A selects the source from the SDP board. Position B selects the source from Connector J12. This link selects whether or not the power solution on the board is used to supply the AD5791. When this link is inserted, the ADP5070 dc-to-dc switch is used to supply the AD5791 in single supply. When this link is removed, the ADP5070 dc-to-dc switch is bypassed. This link selects the state of the LDAC pin. When this link is inserted, LDAC is at logic low. When this link is removed, LDAC is at logic high. LK4 This link selects the state of the RESET pin. When this link is inserted, RESET is at logic low. When this link is removed, RESET is at logic high. LK5 This link selects the voltage source for the digital supply VCC pin. When this link is inserted, the digital supply is sourced from an external 3.3 V single supply (Connector J11) with Link LK1 on position A. Note that the J11 connector can be supplied with a range of 3.3 V to 5.5 V when Link LK5 is inserted. When this link is removed, the digital supply is sourced from the adjusted voltage generated by the ADP5070 and regulated by the ADP7118. Note that the J11 connector can be supplied with a range of 3.3 V to 18 V when Link LK5 is removed. This link selects whether the ADP7118 regulator is included in the VDD source circuit. When this link is inserted, the ADP7118 regulator is bypassed. When this link is removed, the ADP7118 regulator adjusts the positive analog supply generated by the ADP5070 power solution. This link selects whether the ADP7182 regulator is included in the VSS source circuit. When this link is inserted, the ADP7182 regulator is bypassed. When this link is removed, the ADP7182 regulator adjusts the negative analog supply generated by the ADP5070 power solution. This link selects the voltage source for the IOVCC pin. Position A selects an externally applied voltage at Pin 10 of Connector J12. Position B selects the source from the SDP board. This position must be used when VCC is larger than 3.3V. Position C connects IOVCC to VCC. This link selects the voltage source for the negative analog supply VSS. Position A selects the source from the voltage externally applied at VSS of Connector J13. Position B selects the source from the negative voltage generated by the ADP5070 and adjusted by an ADP7182 regulator, depending on the position of Link LK7. This link selects the voltage source for the positive analog supply VDD. Position A selects the source from the voltage externally applied at VDD of Connector J13. Position B selects the source from the positive voltage generated by the ADP5070 and adjusted by an ADP7118 regulator, depending on the position of Link LK6. This link selects the state of the CLR pin. When this link is inserted, CLR is at logic low. When this link is removed, CLR is at logic high. LK6 LK7 LK8 LK9 LK10 LK11 Rev. B | Page 6 of 25 EVAL-AD5791SDZ User Guide UG-1152 Connector J12 Pin Descriptions Table 4 shows the connectors on the EVAL-AD5791SDZ. Figure 6 and Table 5 show the Connector J12 pins. Table 4. On-Board Connectors Connector J1 to J9 J11 J12 J13 J14 VO VO_BUF VR_EXT Function Voltage reference daughter board connectors Digital power supply connector Digital interface pin header connector Analog power supply connector SDP board connector DAC output connector Buffered DAC output connector 5 V voltage reference input connector 2 4 6 8 10 1 3 5 7 9 16010-002 ON-BOARD CONNECTORS Figure 6. Connector J12 Pin Configuration Table 5. Connector J12 Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 Rev. B | Page 7 of 25 Description CLR LDAC RESET SCLK SDIN SDO SYNC DGND DGND IOVCC UG-1152 EVAL-AD5791SDZ User Guide EVALUATION BOARD SOFTWARE SOFTWARE INSTALLATION SOFTWARE OPERATION The AD5791 evaluation kit includes self installing software on a CD. The software is compatible with Windows XP or later Windows-based PCs. If the setup file does not run automatically, you can run setup.exe from the CD. To launch the software, complete the following steps: 1. From the Start menu, select Analog Devices - AD5791 > AD5791 Evaluation Software. The main window of the software displays (see Figure 8). Install the evaluation software before connecting the evaluation board and SDP board to the USB port of the PC to ensure that the evaluation system is correctly recognized when connected to the PC. 2. If the evaluation system is not connected to the USB port when the software is launched, a connectivity error displays (see Figure 7). Connect the evaluation board to the USB port of the PC, wait a few seconds, click Rescan, and follow the instructions. After installation from the CD is complete, power up the AD5791 evaluation board as described in the Power Supplies and Default Link Options section. Connect the SDP board to the AD5791 evaluation board and then to the USB port of your PC using the supplied cable. 16010-003 When the evaluation system is detected, proceed through any dialog boxes that appear. This completes the installation. 16010-004 Figure 7. Connectivity Error Alert Figure 8. Main Window Rev. B | Page 8 of 25 EVAL-AD5791SDZ User Guide UG-1152 To begin the measurement, click START. Halt the measurement at any time by clicking STOP. When the measurement is completed, a dialog box appears to allow the data to be saved as a spreadsheet file with three columns of data. The first column is the DAC code, the second column is the DAC voltage in volts, and the third column is the INL error in least significant bits (LSBs), as shown in Figure 10. A graph of both DAC output voltage vs. DAC code and INL error vs. DAC code displays on screen. In the measurement example shown in Figure 11, measurements are taken in 1024 code steps beginning at Code 0 and finishing at Code 1,047,552, in total 1023 measurements. With the number of power line cycles (NPLC) setting on the multimeter set to 1, the measurement takes ~75 sec to complete. To complete an all codes measurement, requiring 1,048,576 measurement points, the measurement takes ~21 hours to complete. MAIN WINDOW The main window is divided into three tabs: Configure, Program Voltage, and Measure DAC Output. Configure The Configure tab allows access to the control register, clear code register, software control register, and DAC register, and also allows control of the RESET, CLR, and LDAC pins, as shown in Figure 8. Program Voltage 16010-005 The Program Voltage tab programs the DAC register with a value calculated from the three entered values: the positive voltage reference (VREFP), the negative voltage reference (VREFN), and the desired output voltage input to the Program Voltage field, as shown in Figure 9. Figure 9. Program Output Voltage Window Measure DAC Output The multimeter is controlled over a general-purpose interface bus (GPIB). Once connected to the PC, the multimeter must first be configured via its front panel before taking a measurement. Figure 11 shows the measurement options. The software runs through a sequence of steps, programming the DAC register and measuring the DAC output voltage. The sequence begins with the software programming the DAC with the Start Code value, incrementing the programmed value at each step by the Code Step value, and finishing when the programmed value reaches the Stop Code value. A delay between measurements can be inserted, if required. The GPIB address of the multimeter must be specified. 16010-006 The Measure DAC Output section allows the PC to control an Agilent 3458A multimeter to measure and log the DAC output voltage. Figure 10. Saved Data Format If an Agilent 3458A multimeter is not connected to the PC, the software steps through the codes without taking any measurements. Rev. B | Page 9 of 25 EVAL-AD5791SDZ User Guide 16010-007 UG-1152 Figure 11. Measure DAC Output Window Rev. B | Page 10 of 25 2 AGND P N C1 IOVCC_TP VSS_TP VDD_TP VOUT_BUF_TP VOUT_TP REFP_TP REFN_TP C2 L4 1 DNI TP_12 TP_11 10UF +5V TP2 1 1 TP3 1 TP4 1 1 TP6 1 TP7 1 AGND 9 AGND 10 8 SDO 6 SDIN 5 TP5 2 AVSS_LDO AVDD_LDO AVCC IOVCC J4 3 2 1 VSS_LDO VDD_LDO VREFN VREFP IOVCC_TP +3.3V AGND 6 4 2 B A C REFN REFP SYNC_N SDO SDIN SCLK RESET_N 61300621121 5 3 VOUT VOUT_BUF AD5791_BLOCK IN IOVCC LDAC_N CLR_N LK8 1 MILL-MAX HEADER (M) CONNECTOR.ALIGN WITH VREF CONNECTOR ON REFERENCE BOARDS +3.3V AD5791 POWERSECTION 2 LK7 1 1 1 2 LK6 LK5 VOUT2 VOUT2_FILTER 1 TP9 VOUT1 VOUT2 LK2 1 AGND VOUT1_FILTER 2 0 R0 VOUT1 VCC TP10 GND_EARTH 1 2 SYNC_N SDO SDIN SCLK RESET_N LDAC_N CLR_N +3.3V SDP_BLOCK TP_10 TP_4 TP_3 TP_2 TP_1 600OHM 2 1 B A 3 M20-9990345 VCC TP1 LK1 DNI R8 +3.3V VOUT1 LK11 1 2 LDAC_N CLR_N 1 LK3 1 2 SCLK RESET_N 2 1 3 LK4 SYNC_N 7 0 VSS VDD M20-9990345 LK10 VDD_LDO LK9 M20-9990345 VSS_LDO AGND VSS VDD 5 1 3 AGND 4 3 2 1 VO_BUF 1 J1 2 2 L1 1 600OHM 2 L2 1 VSS TO REFERENCE BOARDS AGND TO REFERENCE BOARDS VDD TO REFERENCE BOARDS AGND 2 600OHM MILL-MAX SOCKET (F) 5 3 AGND 4 VO 10UF 10UF 4 2 J12 VCC_DAC 0.1UF VOUT2 CONNECT AGND TO DNG_EARTH WITH A STAR CONNECTION 600OHM 1 VDD_DAC L3 IOVCC_DAC C3 C5 P N P N 2 VSS_DAC C4 C6 1 B 0.1UF 0.1UF J11 2 3 B A 1 3 2 Rev. B | Page 11 of 25 A Figure 12. Schematic of the Main AD5791 Circuitry 1 VCC DGND 3 2 1 VSS AGND VDD DNI J8 J7 DNI MILL-MAX SOCKET (F) 3 2 1 3 2 1 MILL-MAX SOCKET (F) J6 J5 3 2 1 3 2 1 DNI DNI J2 3 2 1 J9 MILL-MAX SOCKET (F) NC PINS ARE RESERVED FOR FUTURE USE MILL-MAX SOCKET (F) 3 2 1 J3 MILL-MAX SOCKET (F) 3 2 1 NC PINS ARE RESERVED FOR FUTURE USE DNI DNI NC PINS ARE RESERVED FOR FUTURE USE 1727023 J13 EVAL-AD5791SDZ User Guide UG-1152 EVALUATION BOARD SCHEMATICS AND ARTWORK AD5791 CARRIER BOARD 16010-112 UG-1152 EVAL-AD5791SDZ User Guide +5V C35 10uF R22 0V R20 30.1K L6 4.7 DFLS130-7 D2 15uH A L7 C VOUT1 OUT 4.7uF C37 4.7uF C36 18.7K R2 1 1.5uH 0V 0V R23 63.4K R39 R3 7 0 R40 0 0 DNI AGND 4 3 ADP5070ACPZ-R7 17 15 PVIN1 PVIN2 FB1 COMP1 EN2 COMP2 VREF SYNC/FREQ SLEW SEQ FB2 SW2 27PF 1 AGND R25 C38 22K 0.022uF 20 5 6 AGND C9 10 12 22PF R26 C39 11 30.1K 18 0.082uF PAD 2 INBK SW1 VREG C8 U5 AGND PAD 9 EN1 PVINSYS 16 14 SS PGND 7 AGND 8 13 1uF C34 R42 49.9K 19 AGND VREG 3.57K R24 AGND R27 C40 1uF 2.8K AGND R3 8 0 DNI R41 0 DNI AGND 0V R28 54.9K D3 A OUT 2.2uH 10 0V Figure 13. Schematic of the ADP5070 DC-to-DC Switch Circuitry Rev. B | Page 12 of 25 16010-011 0V R29 2.2uF 0V C41 BAT54LPS C42 AGND VOUT2 L8 C 2.2uF DNI L9 0 6.8uH R1 EVAL-AD5791SDZ User Guide UG-1152 U6 ADP7118ARDZ-3.3 OUT 2.2UF C43 2.2UF 1 C44 +5V IN AVCC 7 1 VIN VOUT 8 2 VIN VOUT 5 EN 3 SENSE/ADJ 6 SS GND PAD 4 PAD R30 AGND AGND AGND VOUT1_FILTER IN U7 ADP7118ARDZ 0.01uF DNI C7 AGND C46 1uF C45 AVDD_LDO OUT 7 1 VIN VOUT 2 8 VIN VOUT 5 EN 3 SENSE/ADJ 6 SS GND PAD 4 PAD 10 2.2uF R31 VOUT1 IN AGND R32 105K AGND AGND R33 10K AGND AVSS_LDO AGND C48 R35 105K AGND R36 10K AGND Figure 14. Schematic of the LDOs (ADP7118 and ADP7182) from the Power Solution Circuitry Rev. B | Page 13 of 25 16010-012 AGND 2.2uF OUT 4 1uF C47 10 2 ADJ 3 EN 1 VOUT 6 VIN EPAD GND NC 5 R34 VOUT2 IN U8 ADP7182ACPZN PAD VOUT2_FILTER IN VSS_DAC AGND 10UF IN IN IN IN C25 C31 10UF U2 P IN 0.1UF C26 0.1U F C32 U3 0 0 R18 0 R17 0 R16 0 R15 0 R14 R13 IN SCLK_TP U3 REFN IN SYNC_N_TP IN IN SDIN_TP LDAC_N_TP IN CLR_N_TP IN RESET_N_TP IN SYNC_N SCLK SDIN LDAC_N CLR_N 10UF C27 10UF C33 VDD_DAC C24 C30 N P N P N P N RESET_N C28 IN 0.1UF 0.1UF 10K U2 R12 10K 4 AD8676BRMZ U2 8 V+ V- 2 3 U2 7 U2 1 AD8676BRMZ AD8676BRMZ 5 6 220PF IN AGND 220PF R10 0.1UF AGND DNI C19 DNI C20 R11 10K 10K IOVCC_DAC C17 0.1UF AGND INV VREFPS VREFPF RESET CLR LDAC SDIN SCLK SYNC VREFNF VREFNS AGND 1 3 4 6 7 8 12 13 14 16 17 VDD_DAC 10UF R9 P AGND N 20 11 C13 0.1UF 0 R19 OUT SDO_TP AGND VSS_DAC AGND IN SDO 1 N1 VSS_DAC IN OUT 3 2 4 V- N2 8 VDD_DAC IN IN IOVCC_DAC IN VCC_DAC 0.1UF AD5791BRUZ_PRELIM RFB SDO 2 U1 C16 VOUT C21 P N REFP IN C18 10UF N P C14 5 VDD 9 VCC 10 IOV CC 10UF C22 19 AGND 15 DGND 18 VSS N P 6 U3 AD8675ARZ V+ OUT 7 DNI 10PF 10UF C15 0.1UF Rev. B | Page 14 of 25 0.1UF Figure 15. Schematic of the AD5791 Circuitry C29 VOUT VOUT_BUF OUT OUT UG-1152 EVAL-AD5791SDZ User Guide 16010-115 C23 EVAL-AD5791SDZ User Guide UG-1152 J14 58 57 56 TP_12 OUT TP_11 OUT TP_10 OUT 55 54 53 52 51 50 49 48 47 46 45 44 RESET_N IN 43 LDAC_N IN 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 AGND 11 10 9 8 7 6 5 4 3 2 1 UART_RX GND BMODE1 UART_TX GND RESET_OUT_N SLEEP_N EEPROM_A0 WAKE_N NC NC NC GND NC NC NC GND NC NC NC CLKOUT TMR_C TMR_D TMR_A TMR_B GPIO6 GPIO7 GND GND GPIO4 GPIO5 GPIO2 GPIO3 GPIO0 GPIO1 SCL_1 SCL_0 SDA_1 SDA_0 GND SPI_SEL1/SPI_SS_N GND SPI_CLK SPI_SEL_C_N SPI_MISO SPI_SEL_B_N SPI_MOSI GND SERIAL_INT SPI_SEL_A GND SPI_D3 SPORT_TSCLK SPI_D2 SPORT_DT0 SPORT_DT1 SPORT_TFS SPORT_DR1 SPORT_RFS SPORT_TDV1 SPORT_DR0 SPORT_TDV0 SPORT_RSCLK GND GND PAR_FS1 PAR_CLK PAR_FS3 PAR_FS2 PAR_A1 PAR_A0 PAR_A3 PAR_A2 GND GND PAR_CS_N PAR_INT PAR_RD_N PAR_WR_N PAR_D1 PAR_D0 PAR_D3 PAR_D2 PAR_D5 PAR_D4 GND PAR_D7 GND PAR_D6 PAR_D9 PAR_D8 PAR_D11 PAR_D10 PAR_D13 PAR_D12 PAR_D14 GND GND PAR_D15 PAR_D17 PAR_D16 PAR_D19 PAR_D18 PAR_D21 PAR_D20 PAR_D23 PAR_D22 GND USB_VBUS GND VIO(+3.3V) GND GND GND GND NC NC VIN NC 61 IN 62 +3.3V 63 64 65 U4 8 66 67 68 69 OUT TP_1 1 OUT TP_2 2 OUT TP_3 3 6 70 OUT TP_4 71 7 72 A0 VCC A1 SDA A2 WP VSS 4 73 5 SCL 24LC64-I/SN 74 75 76 AGND 77 78 IN 79 CLR_N 80 81 82 83 84 85 86 87 88 89 90 91 92 IN SCLK IN SDIN IN SYNC_N IN SDO 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 AGND 111 112 113 114 115 116 IN +3.3V 117 118 119 16010-014 59 RESET_IN_N 120 FX8-120S-SV(21) Figure 16. Schematic of the SDP Board Connector 16010-117 60 Figure 17. Component Placement Schematic Rev. B | Page 15 of 25 EVAL-AD5791SDZ User Guide 16010-118 UG-1152 16010-119 Figure 18. Top Printed Circuit Board (PCB) Layer Schematic Figure 19. Bottom PCB Layer Schematic Rev. B | Page 16 of 25 2 3 AGND J3 VSS C1 C3 VDD 0.1F 0.1F 3 1 2 DNI MILL-MAX HEADER (M) CONNECTOR J2 P N 4 V- V+ 8 ADA4077-2BRZ U2 J1 1 2 3 ADR445BRZ 1 2 3 2 3 1 DNI J5 MILL-MAX SOCKET (F) DNI J7 MILL-MAX HEADER (M) CONNECTOR MILL-MAX SOCKET (M) J9 0.1F AGND C5 350-10-103-00-006000 VSS AGND C6 VR_EXT 0.1F 1 2 3 MILL-MAX SOCKET (F) 2 3 1 DNI J6 J8 DNI MILL-MAX HEADER (M) CONNECTOR AGND 5 4 3 2 1 AGND 10k R1 10k 10k R20 DNI A B R21 DNI 10k R2 JP1 M20-9990345 10k R3 AGND 6 5 R22 DNI 0.1F C7 DNI 10k R4 10k 7 ADA4077-2BRZ U2 R25 DNI 1 C2 C4 DNI R24 10k MILL-MAX HEADER (M) CONNECTOR VDD VDD 1 2 3 VSS 10k R7 U1 10k AGND R8 DNI MILL-MAX HEADER (M) CONNECTOR 10F 10F Rev. B | Page 17 of 25 P Figure 20. Schematic of the EV-ADR445-REFZ N R5 10k 8 TP 7 NC 6 VOUT 5 TRIM 3 2 U2 1 ADA4077-2BRZ 0.1F C8 DNI 10k R6 10k R23 DNI AGND J4 VREFN VREFP MILL-MAX SOCKET (F) 2 3 1 16010-018 1 TP 2 VIN 3 NC 4 GND EVAL-AD5791SDZ User Guide UG-1152 ADR445 REFERENCE VOLTAGE DAUGHTER BOARD 10k EVAL-AD5791SDZ User Guide 16010-020 UG-1152 16010-021 Figure 21. EV-ADR445-REFZ Component Placement Schematic 16010-022 Figure 22. EV-ADR445-REFZ Top PCB Layer Schematic Figure 23. EV-ADR445-REFZ Bottom PCB Layer Schematic Rev. B | Page 18 of 25 IN AGND VDD VSS C1 C5 IN 0.1UF 0.1UF 2N3904TF 1 Q1 3 2 10UF C24 0.1UF 7 6 5 1MEG R44 U1 ADA4077-2BRZ R43 10K 8 U1 V+ VADA4077-2BRZ 4 MILL-MAX SUPPLY SOCKET (M) CONNETOR VDD 1 AGND 2 VSS 3 J1 1K R49 P R41 15K 1K U2 8 V+ VADA4077-2BRZ 4 R42 VDD 10UF 2 1 4 7 5 1N270 D2 C A LTZ1000ACH#PBF U5 68K 0.1UF C22 D1 A DNI MILL-MAX HEADER (M) CONNECTOR 1 J3 2 3 2 3 0.1UF C13 U1 1 ADA4077-2BRZ R8 1.5K C12 N P 10UF 6 5 C50 DNI 7 ADA4077-2BRZ 10K R45 0.1UF U2 3 2 DNI J4 1 VREFP 2 3 VREFN MILL-MAX SOCKET (F) MILL-MAX HEADER (M) CONNECTOR 1 J9 2 3 J6 1 2 3 MILL-MAX SOCKET (F) DNI 1 0.1UF 10K/10K 3 C51 DNI AGND ADA4077-2BRZ U2 2 1 R48 DNI MILL-MAX HEADER (M) CONNECTOR 1 J8 2 3 25K R46 J5 1 2 3 MILL-MAX SOCKET (F) DNI MILL-MAX HEADER (M) CONNECTOR 1 J7 2 3 SINGLE GND STAR POINT FOR ALL CONNECTIONS HERE 0.1UF AGND C23 DNI MILL-MAX HEADER (M) CONNECTOR 1 J2 2 3 6 R40 8 3 68K R20 IN C3 C7 10UF P C2 N P C6 N 0.1UF 0.1UF C4 N P C8 Rev. B | Page 19 of 25 10UF Figure 24. Schematic of the EV-LTZ1000-REFZ N R39 120 1N270 16010-023 C EVAL-AD5791SDZ User Guide UG-1152 LTZ1000 REFERENCE VOLTAGE DAUGHTER BOARD EVAL-AD5791SDZ User Guide 16010-024 UG-1152 16010-025 Figure 25. EV-LTZ1000-REFZ Component Placement Schematic 16010-026 Figure 26. EV-LTZ1000-REFZ Top PCB Layer Schematic Figure 27. EV-LTZ1000-REFZ Bottom PCB Layer Schematic Rev. B | Page 20 of 25 J1 VSS AGND 1 2 3 MILL-MAX SOCKET (M) 1 2 3 350-10-103-00-006000 J9 J3 DNI MILL-MAX HEADER (M) CONNECTOR J2 1 2 3 PAD DNI J7 1 2 3 1 2 3 MILL-MAX SOCKET (F) J6 3 J5 MILL-MAX SOCKET (F) 1 2 3 AGND AGND MILL-MAX HEADER (M) CONNECTOR DNI 1 J8 2 AGND C11 0.1uF DNI AGND R10 10K R9 100K C10 2.2uF DNI MILL-MAX HEADER (M) CONNECTOR AGND AGND 4 7 1 VIN VOUT 8 2 VIN VOUT 5 EN 3 SENSE/ADJ 6 SS GND PAD C9 10000PF AGND AGND C5 1uF DNI MILL-MAX HEADER (M) CONNECTOR 1 2 3 VDD AGND LTC6655BHMS8-5#PBF 8 GND 7 VOUT_F 6 VOUT_S 5 GND U3 C1 C3 VDD VSS AGND C6 10uF 10K 10K R2 R1 10K DNI 10K 10K AGND R3 U2 8 V+ V4 ADA4077-2BRZ R21 1 SHDN 2 V 3 IN GND 4 GND 6 5 0.1uF C7 DNI 10K R4 10K R22 DNI 7 ADA4077-2BRZ U2 R24 DNI 10K 10K R25 DNI R11 10K R7 U1 0.1uF 0.1uF P C2 N P 10K AGND R8 ADP7118ARDZ 10uF 10uF Rev. B | Page 21 of 25 C4 Figure 28. Schematic of the EV-LTC6655-REFZ N R5 10K MILL-MAX HEADER (M) CONNECTOR 3 2 U2 1 DNI ADA4077-2BRZ 0.1uF C8 10K R6 10K R23 DNI AGND C12 1uF C13 1uF J4 VREFN VREFP MILL-MAX SOCKET (F) 1 2 3 16010-128 DNI R20 EVAL-AD5791SDZ User Guide UG-1152 LTC6655 REFERENCE VOLTAGE DAUGHTER BOARD 10K EVAL-AD5791SDZ User Guide 16010-129 UG-1152 16010-130 Figure 29. EV-LTC6655-REFZ Component Placement Schematic 16010-131 Figure 30. EV-LTC6655-REFZ Top PCB Layer Schematic Figure 31. EV-LTC6655-REFZ Bottom PCB Layer Schematic Rev. B | Page 22 of 25 EVAL-AD5791SDZ User Guide UG-1152 ORDERING INFORMATION BILL OF MATERIALS Table 6. AD5791 Carrier Board Reference Designator C1, C3, C5, C14, C16, C18, C21, C24, C26, C30, C32 C2, C4, C6, C13, C15, C17, C22, C25, C27 to C29, C31, C33 C34, C40 C35 C36, C37 C38 C39 C41, C42 C43, C44 C45, C47 C46, C48 C8 C9 D2 D3 J1 to J9 J11 J12 J13 J14 J4 L1, L2, L3 L6 L7 L8 L9 LK1, LK9, LK10 LK2 to LK7, LK11 LK8 R0, R13 to R19, R37, R39 R9 to R12 R20, R26 R21 R22 R23 R24 R25 R27 R28 R29, R31, R34 R30 R32, R35 R33, R36 R42 TP1 to TP7, TP9, TP10 U1 U2 Part Description Capacitors, 3528, 10 F Part Number TAJB106K016RNJ Capacitors, 0603, 25 V, 0.1 F, 10% C1608X8R1E104K Capacitors, 0603, 6.3 V, 1 F, 20% Capacitor, 0805, 10 V, 10 F, 20% Capacitors, 1206, 50 V, 4.7 F, 20% Capacitor, 0603, 16 V, 0.022 F, 10% Capacitor, 0603, 16 V, 0.082 F, 10% Capacitors, 1206, 25 V, 2.2 F, 10% Capacitors, 0603, 10 V, 2.2 F, 10% Capacitors, 0603, 16 V, 1 F, 10% Capacitors, 0805, 25 V, 2.2 F, 10% Capacitor, 0603, 50 V, 27 pF, 5% Capacitor, 0603, 50 V, 22 pF, 5% Schottky diode Schottky diode 3-position female headers, single-row connectors, 2.54 mm pitch 2-position terminal block (3.81 mm pitch) 10-position male header connector (3.81 mm pitch) 3-pin terminal block (3.81 mm pitch) 120-way connector, 0.6 mm pitch 3-position male header single row connector, 2.54 mm pitch Surface-mount power inductors Surface-mount power inductor Surface-mount power inductor Surface-mount power inductor Surface-mount power inductor 3-pin single-inline (SIL) header 2-contact headers, two rows, through hole 6-pin header Resistors, 0 , 0.0625 W, 1%, 0603 Resistors, 10 k, 0.0625 W, 1%, 0603 Resistors, 30.1 k, 0.1 W, 1%, 0603 Resistor, 18.7 k, 0.1 W, 1%, 0603 Resistor, 4.7 , 0.1 W, 1%, 0603 Resistor, 63.4 k, 0.0625 W, 1%, 0402 Resistor, 3.57 k, 0.1 W, 1%, 0402 Resistor, 22 k, 0.1 W, 1%, 0603 Resistor, 2.8 k, 0.1 W, 1%, 0402 Resistor, 54.9 k, 0.1 W, 1%, 0402 Resistors, 10 , 0.1 W, 1%, 0603 Resistor, 1 , 0.0625 W, 5%, 0402 Resistors, 105 k, 0.1 W, 1%, 0603 Resistors, 10 k, 0.1 W, 1%, 0603 Resistor, 49.9 k, 0.1 W, 1%, 0603 Red test points 1 ppm 20-bit, 1 LSB INL, voltage output DAC Ultraprecision, 36 V, 2.8 nV/Hz dual rail-to-rail output op amp JMK107B7105MA TACH106M010XTA C3216X7R1H475M160AC 0603YC223KAT2A CL10B823KO8NNNC C3216X7R1E225K GRM188R71A225KE15D CGA3E1X7R1C105K080AC GRM21BR71E225KA73L 2238 867 15279 CC0603JRNP09BN220 DFLS130-7 BAT54LPS 310-13-103-41-001000 1727010 M20-9980546 1727023 FX8-120S-SV(21) 350-10-103-00-006000 7427920415 LPS6235-153MRB XFL4020-152MEB LPS4018-222MRB LPS6235-682MRB M20-9990345 69157-102 61300621121 MC0603WG00000T5E-TC MC0063W0603110K ERJ-3EKF3012V ERJ-3EKF1872V ERJ-3RQF4R7V ERJ-2RKF6342X ERJ-2RKF3571X CRCW060322K0FKEA ERJ-2RKF2801X ERJ-2RKF5492X ERJ-3EKF10R0V CRCW04021R00JNED ERJ-3EKF1053V ERJ-3EKF1002V ERJ-3EKF4992V TP-104-01-02 AD5791BRUZ AD8676BRMZ Rev. B | Page 23 of 25 UG-1152 EVAL-AD5791SDZ User Guide Reference Designator U3 U4 Part Description 36 V precision, 2.8 nV/Hz rail-to-rail output op amp 64 kb I2C serial electrically erasable programmable read only memory (EEPROM) 1 A/0.6 A dc to dc switching regulator with independent positive and negative outputs 20 V, 200 mA, low noise, complementary metal-oxide-semiconductor (CMOS) LDO linear regulator, 3.3 V fixed output voltage 20 V, 200 mA, low noise, CMOS LDO linear regulator -200 mA, low noise linear regulator Straight PCB mount Subminiature Version B (SMB) jacks, 50 Shorting links on LK1, LK9, and LK10, 2.54mm pitch, contact center U5 U6 U7 U8 VO, VO_BUF Not Applicable Part Number AD8675ARZ 24LC64-I/SN ADP5070ACPZ-R7 ADP7118ARDZ-3.3 ADP7118ARDZ ADP7182ACPZN 1-1337482-0 QPC02SXGN-RC Table 7. ADR445 Daughter Board Reference Designator C1, C3, C5, C6 C2, C4 J1 to J9 J4 JP1 R1 to R8 U1 U2 VR_EXT Part Description Capacitors, 0603, X8R, 25 V, 0.1 F, 10% Capacitors, 3528, 16 V, 10 F, 10% 3-position male header, single-row connectors, 2.54 mm pitch 3-position female header, single-row connector, 2.54 mm pitch 3-position header connector Resistors, 10 k, 0.125 W, 0.01%, 0805 Ultralow noise 5 V voltage reference High precision dual amplifier Straight PCB mount SMB jack, 50 Part Number C1608X8R1E104K TAJB106K016RNJ 350-10-103-00-006000 310-13-103-41-001000 M20-9990345 + M7567-05 ERA-6AEB103V ADR445BRZ ADA4077-2BRZ 1-1337482-0 Table 8. LTZ1000 Daughter Board Reference Designator C1, C3, C5, C7, C13, C22, C23, C24 C2, C4, C6, C8, C12 D1, D2 J1 to J9 J4 Q1 R20 R39, R40 R41 R42 R43 R44 R45 R46 R48 R49 R8 U1, U2 U5 Part Description Capacitors, 0603, 25 V, 0 F, 10% Capacitors, 3528, 16 V, 1 F, 10% Radio frequency (RF)/pin diodes 3-position male header single row connectors, 2.54 mm pitch 3-position female header single row connector, 2.54 mm pitch Single bipolar junction transistor Resistor, 120 , 0.6 W, 0.01%, through hole Resistors, 68 k, 0.1 W, 0.1%, 0805 Resistor, 15 k, 0.6 W, 0.01%, through hole Resistor, 1 k, 0.6 W, 0.01%, through hole Resistor, 10 k, 0.6 W, 1%, through hole Resistor, 1 M, 0.6 W, 1%, through hole Resistor, 10 k, 0.6 W, 0.005%, through hole Resistor, 25 k, 0.6 W, 0.01%, through hole Resistor, 10 k/10 k, 0.1W, 0.01%, 1505 Resistor, 1 k, 0.6 W, 1%, through hole Resistor, 1.5 k, 0.25 W, 1%, through hole High precision dual amplifiers Ultraprecision reference Rev. B | Page 24 of 25 Part Number C1608X8R1E104K TAJB106K016RNJ 1N270 350-10-103-00-006000 310-13-103-41-001000 2N3904TF Y1453120R000T9 PCF0805-13-68K-B-T1 Y145315K0000T9 Y14531K00000T9 MRS25000C1002FRP00 MRS25000C1004FCT00 Y145310K0000V9L Y145325K0000T9 Y1685V0001TT9 MRS25000C1001FRP00 CMF-551501FT-1 ADA4077-2BRZ LTZ1000ACH#PBF EVAL-AD5791SDZ User Guide UG-1152 Table 9. LTC6655 Daughter Board Reference Designator C1, C3, C11 C2,C4 C5 C6 C9 C10 C12, C13 J1 to J9 J4 R1, R2, R3, R4, R5, R6, R7, R8 R10, R11 R9 U1 U2 U3 Part Description Capacitors, 0603, 25 V, 0.1 F, 10% Capacitors, 3528, 16 V, 10 F, 10% Capacitor, 0603, 16 V, 1 F, 10% Capacitor, 0805, 10 V, 1 F, 10% Capacitor, 0603, 25 V, 1 nF, 10% Capacitor, 0805, 25 V, 2.2 F, 10% Capacitors, 0603, 10 V, 1 F, 10% 3-position male headers, single-row connectors, 2.54 mm pitch 3-position female header, single-row connector, 2.54 mm pitch Resistors, 0805, 10 k, 0.125 W, 0.1% Resistors, 0603, 10 k, 0.1 W, 1% Resistor, 0603, 100 k, 0.1 W, 1% Low dropout regulator High precision dual amplifiers Low noise, low drift precision reference Part Number C1608X8R1E104K080AA TAJB106K016RNJ GRM188R61C105KA93D CL21B106KPQNNNE C1608X7R1E103K GRM21BR71E225KA73L GRM188R71A105KA61D 350-10-103-00-006000 310-13-103-41-001000 ERA-6AEB103V ERJ-3EKF1002V ERJ-3EKF1003V ADP7118ARDZ ADA4077-2BRZ LTC6655BHMS8-5#PBF I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). ESD Caution ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality. Legal Terms and Conditions By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the "Evaluation Board"), you are agreeing to be bound by the terms and conditions set forth below ("Agreement") unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. 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