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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
Evaluating the
AD7625/AD7626
FEATURES
Full featured evaluation board for the
Versatile analog signal conditioning circuitry
On-board reference, reference buffers, and ADC drivers
System demonstration board compatible (EVAL-SDP-CH1Z)
PC software for control and data analysis of time and
frequency domain
EVALUATION KIT CONTENTS
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ
ADDITIONAL EQUIPMENT AND SOFTWARE
System demonstration platform (EVAL-SDP-CH1Z)
Precision source
World-compatible, 12 V dc supply adapter
(included with EVAL-SDP-CH1Z)
Power supply, +7 V/−2.5 V (optional)
USB cable
SMA cable
ONLINE RESOURCES
Documents Needed
AD7625/AD7626
data sheet
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ
Required Software
AD7625/AD7626
evaluation software
SIGNAL SOURCE
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide
16-Bit, 6 MSPS/10 MSPS PulSAR Differential ADC
AD7625/AD7626
evaluation board
user guide
TYPICAL EVALUATION SETUP
SMA
CONNECTOR
Rev. A | Page 1 of 28
GENERAL DESCRIPTION
The
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ
boards designed to demonstrate the low power performance of the
AD7625/AD7626
16-bit, 6 MSPS/10 MSPS PulSAR® differential
analog-to-digital converters (ADCs), and to provide an easy to
understand interface for a variety of system applications. Full
descriptions of the
AD7626
respective product data sheets, which should be consulted in
conjunction with this user guide when using this evaluation board.
The user PC software executable controls the evaluation board
over the USB cable through the Analog Devices, Inc., system
demonstration platform board (SDP) board, EVAL-SDP-CH1Z.
On-board components include: the
precision, buffered band gap 1.2 V/4.096 V reference options;
the
AD8031
reference buffer; the
signal conditioning circuit with two op amps and an option to
use a differential amplifier (ADA4932-1); and the ADP7102,
ADP7104, ADP124, and
necessary voltage levels on board.
These evaluation boards interface to the SDP board via a 160-pin
FMC connector. The SMA connectors (J3/J6 and J5/J8) are
provided for the low noise analog signal source.
Figure 1.
UG-745
are evaluation
and
AD7625
are available in the
ADR3412/ADR4540
ADA4899-1/ADA4897-1
ADP2300
regulators to derive
TO 12V WALL WART
PC
USB
high
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Table of Contents
Related Manuals for Analog Devices EVAL-AD7625FMCZ
Summary of Contents for Analog Devices EVAL-AD7625FMCZ
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Page 1: Features
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ evaluation board The user PC software executable controls the evaluation board over the USB cable through the Analog Devices, Inc., system ADDITIONAL EQUIPMENT AND SOFTWARE demonstration platform board (SDP) board, EVAL-SDP-CH1Z. System demonstration platform (EVAL-SDP-CH1Z) -
Page 2: Table Of Contents
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide TABLE OF CONTENTS Features ....................1 Basic Hardware Setup ..............6 Evaluation Kit Contents ..............1 Evaluation Board Software ...............7 Additional Equipment and Software ..........1 Software Installation ..............7 Online Resources ................1 Launching The Software ..............9 General Description ................. -
Page 3: Functional Block Diagram
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 FUNCTIONAL BLOCK DIAGRAM +12V ADP7102 WALL WART +12V ADP7104 ADP2300 +12V USB PORT –V = –2.5V POWER ADP124 +4.096V SUPPLY CIRCUITRY +4.096V ADR4540 AD8031 +2.5V ADR3412 REFIN VDD1 VDD2 100Ω CNV± VIN+ ADA4899-1 SPARTAN-6 ADSP-BF527 FPGA –V... -
Page 4: Evaluation Board Hardware
−2.5 V for the amplifier –V . The ADP124 (U12 and U16) provides product page on the Analog Devices website. a 2.5 V supply for VDD2 and VIO (U1). HARDWARE LINK OPTIONS The 3.3 V supply for the EEPROM (U7) comes from the... -
Page 5: Serial Interface
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 Table 3. On-Board Power Supplies Description Power Supply Voltage Range (V) Description 5 to 7 ADP7104 (U10) and ADP7102 (U18) generate the necessary 5 V and 7 V supplies, respectively, from the 12 V supply coming from the EVAL-SDP-CH1Z. The 7 V supply is recommended for the on- board amplifier +V . -
Page 6: Reference Options
Launch the AD7625/AD7626 evaluation software from the and connect the paddle to the ground plane of the board Analog Devices subfolder in the Programs menu. The full using multiple vias. software installation procedure is described in the Evaluation • Decouple all the power supply pins (VDD1, VDD2, and Board Software section. -
Page 7: Evaluation Board Software
The evaluation board software is available to download from EVAL-AD7625FMCZ/EVAL-AD7626FMCZ evaluation board pages on the Analog Devices website. Double-click the setup.exe file to run the install. The default location for the software is C:\Program Files (x86)\Analog Devices\ AD7626_25 Evaluation Software. - Page 8 UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide Figure 8. Evaluation Software Installation—In Progress Figure 11. EVAL-SDP-CH1Z Drivers Setup—Choose Install Location Figure 9. Evaluation Software Installation—Complete Figure 12. EVAL-SDP-CH1Z Drivers Setup—Installing Drivers Figure 13. EVAL-SDP-CH1Z Drivers Setup—Windows Security Figure 10. EVAL-SDP-CH1Z Drivers Setup—Welcome Rev. A | Page 8 of 28...
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Page 9: Launching The Software
AD7625/AD7626 evaluation software can be launched. From the Start menu, click Programs > Analog Devices > AD7626_25 Evaluation Software. The main window of the software then displays (see Figure 19). If the evaluation system is not connected to the USB... -
Page 10: Change To Pll Enable Section
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide SOFTWARE OPERATION Samples From the Samples drop-down menu, Label 5 in Figure 19, This section describes the full software operation and all the select the number of samples to analyze when running the windows that appear. When the software is launched, the main software;... - Page 11 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 Figure 19. Evaluation Software Window Rev. A | Page 11 of 28...
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Page 12: Waveform Capture
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide WAVEFORM CAPTURE Figure 20 shows the Waveform tab. A 20 kHz sine-wave input The Waveform Analysis boxes, Label 1 in Figure 20, show the signal was used along with an on-board 4.096 V external amplitudes recorded from the captured signal in addition to the reference. -
Page 13: Dc Testing-Histogram
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 DC TESTING—HISTOGRAM AC TESTING—HISTOGRAM Figure 21 shows the Histogram tab. The histogram can be used The histogram can also be used to test the ADC for the code to test the ADC for the code distribution for dc input, compute... -
Page 14: Ac Testing-Fft Capture
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide AC TESTING—FFT CAPTURE Figure 22 shows the FFT tab. This tests the traditional ac full-scale input range is more than a few volts peak-to-peak, it is recommended to use the on-board amplifiers to amplify the signal, characteristics of the converter and displays a FFT of the results. -
Page 15: Summary Tab
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 SUMMARY TAB Figure 23 shows the Summary tab, which captures all the display information and provides it in one tab with a synopsis of the information, including key performance parameters such as SNR and THD. Figure 23. Summary Tab... -
Page 16: Troubleshooting
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide TROUBLESHOOTING This section provides recommendations on how to prevent and HARDWARE troubleshoot problems encountered with the software and the If the software does not read any data back, take the following steps: hardware. • With the 12 V wall wart plugged in to the SDP board, check SOFTWARE that the voltage applied is within the ranges shown in Table 3. -
Page 17: Added Evaluation Board Schematics And Artwork Section, And Figure 24; Renumbered Sequentially
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 EVALUATION BOARD SCHEMATICS AND ARTWORK 2PT5V 8 IN +2.5V 7 IN 5 EN OUTSEN 4.7 µF 6 NC -2P5V 4 GND ADP2300AUJZ -2.5V ADP124ARHZ-2.5 0.1uF 1A, 30V 10 µF 4.7 µF 35.7K 3PT3V 16.9K VIO_2PT5V +3.3V_FMC 8 IN +3.3V... -
Page 18: Added Figure 25
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide External Reference AMP_PWR+ 0.1uF ADR4540BRZ AD8031ARZ +VIN VOUT 2.2µF 10 µF 0.1uF 4PT096V_REF VCM_OUT 1PT2V_REFIN AMP_PWR+ 10 µF 0.1uF REFIN VOUT_F 0.1uF VOUT_S 0.1uF 10 µF GND_S 0.1uF VCM_BUF 10 µF GND_F AD8031ARZ ADR3412ARJZ Default is B to centre linked 10 µF... -
Page 19: Added Figure 26
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 AMP_PWR+ 0.1uF ADA4899-1 6 Pin (2x3) 0.1" Pitch TH R/A SOCKET OP_AMP+ VOUT J9-1 100pF J9-2 J9-3 J9-4 AMP_PWR+ J9-5 0.1uF AMP_PWR- 0.1uF AMP_PWR- J9-6 Analog Front End AMP_PWR+ 0.1uF ADA4899-1 OP_AMP- VOUT OP_AMP+ 100pF 56pF AIN+ 0.1uF... -
Page 20: Added Figure 27
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide +2.5V 100nF 100nF 100nF 100nF 100nF 100nF 100nF CAP1 10nF CAP2 CAP2 CNV- 10uF (Decouple to Pin27) CAP2 100R CNV+ AD7626BCPZ REFIN REFIN 10uF 10uF (Decouple to Pin31) PADDLE DCO- DCO- VCM_OUT DCO+ DCO+ CLK- CLK-... -
Page 21: Added Figure 28
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 XTAL-CWX113-100MHZ RF_OUT 100MHz +3.3V +3.3V VFXO321-BBEC-100MHZ RF_OUT 10uF 10uF 10uF 10uF RF-OUT 4.12k 100MHz 100.0MHz 0.1uF RF_OUT ADC_PLL_CNV+ OUT0 COMP 0.1uF ADC_PLL_CNV- OUT0B C24 1nF 0.1uF FPGA_PLL_CNV+ OUT1 AD9513BCPZ TRANSFORMER_ 100R C23 1nF 0.1uF MABA-007159 FPGA_PLL_CNV-... -
Page 22: Added Figure 29 And Figure 30
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide J7-A ASP-134604-01 J7-B J7-D ASP-134604-01 ASP-134604-01 J7-C ASP-134604-01 PG_C2M DP0_C2M_P PG_C2M VREF_A_M2C DP0_C2M_N PRSNT_M2C_L OSC_CLK+ CLK1_M2C_P GBTCLK0_M2C_P OSC_CLK- CLK1_M2C_N AF22 CLK0_M2C_P DCO+ DP0_M2C_P GBTCLK0_M2C_N AG23 CLK0_M2C_N DCO- DP0_M2C_N CLK+ AD23 LA00_P_CC AF20 LA02_P FPGA_CNV+ AE23 LA01_P_CC... -
Page 23: Added Figure 31 And Figure 32
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 Figure 31. Evaluation Board Silkscreen—Bottom Assembly Figure 32. Evaluation Board—Top Layer Rev. A | Page 23 of 28... -
Page 24: Added Figure 33 And Figure 34
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide Figure 33. Evaluation Board Layer 2—Ground Figure 34. Evaluation Board Layer 3—Power Rev. A | Page 24 of 28... -
Page 25: Added Figure 35
EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 Figure 35. Evaluation Board Bottom Layer Rev. A | Page 25 of 28... -
Page 26: Added Bill Of Materials Section And Table 4
UG-745 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide BILL OF MATERIALS Table 4. Bill of Materials for EVAL-AD7626FMCZ Name Part Description Part Number Stock Code +5V, +7V, −2P5V, 1PT2V_REFIN, Test point 20-313137 FEC 8731144 2PT5V, 3PT3V, 4PT096V_REF, AMP_PWR+1, AMP_PWR−1 VADJ Test point Do not insert... - Page 27 EVAL-AD7625FMCZ/EVAL-AD7626FMCZ User Guide UG-745 Name Part Description Part Number Stock Code R7, R13, R14, R15, R16, R38, R40, R44, Resistor MC 0.063W 0603 0R FEC 9331662 R45, R46, R47, R48, R52, R54, R55, R63, R68, R69, R77, R78 Resistor MC 0.063W 0603 1% 16K9...
- Page 28 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.
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