Datasheet

ManualsBrandsANALOG DEVICES ManualsDev KitsPCB design board

Evaluation Board User Guide

UG-294

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 AD9644/AD9641 Analog-to-Digital Converters

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT

WARNING AND LEGAL TERMS AND CONDITIONS.

Rev. B | Page 1 of 48

FEATURES

Full featured evaluation board for the AD9644 or AD9641

SPI interface for setup and control

External clock, on-board oscillator, and AD9524 clocking options

Balun/transformer and amplifier input drive options

LDO regulator and switching power supply options

VisualAnalog® and SPI controller software interfaces

EQUIPMENT NEEDED

Analog signal source and antialiasing filter

Sample clock source (if not using the on-board oscillator)

2 switching power supplies (6.0 V, 2.5 A), CUI EPS060250UH-

PHP-SZ, provided

PC running Windows® 98 (2nd ed.), Windows 2000,

Windows ME, or Windows XP

USB 2.0 port, recommended (USB 1.1 compatible)

AD9644 or AD9641 evaluation board

FIFO-GX FPGA-based data capture kit

SOFTWARE NEEDED

VisualAnalog

SPI controller

DOCUMENTS NEEDED

AD9644 or AD9641 data sheet

AD9524 data sheet

ADP2114 or ADP2108 data sheet

AD8376 or ADL5562 data sheet

JESD204A specification

AN-905 Application Note, VisualAnalog Converter Evaluation

Tool Version 1.0 User Manual

AN-878 Application Note, High Speed ADC SPI Control Software

AN-877 Application Note, Interfacing to High Speed ADCs via SPI

AN-835 Application Note, Understanding High Speed ADC

Testing and Evaluation

GENERAL DESCRIPTION

This user guide describes the AD9644 and AD9641 evaluation

boards (AD9644-155KITZ, AD9644-80KITZ, AD9641-80KITZ),

which provide all of the support circuitry required to operate the

AD9644 and AD9641 in the available modes and configurations.

The application software used to interface with the device is

also described.

The AD9644 and AD9641 data sheets provide additional infor-

mation and should be consulted when using the evaluation

board. For additional information or questions, send an email

to highspeed.converters@analog.com.

The JESD204A specification can be downloaded from the JEDEC

website. The download is free, but registration is required.

TYPICAL MEASUREMENT SETUP

09941-001

Figure 1. AD9644/AD9641 Evaluation Board and FIFO-GX Data Capture Board

Summary of content (48 pages)

PAGE 1
Evaluation Board User Guide UG-294 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.
PAGE 2
UG-294 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Input Signals...................................................................................3 Equipment Needed ........................................................................... 1 Output Signals ...............................................................................3 Software Needed ..........................................
PAGE 3
Evaluation Board User Guide UG-294 EVALUATION BOARD HARDWARE The AD9644 and AD9641 evaluation boards provide all of the support circuitry required to operate the parts in various modes and configurations. Figure 2 shows the typical bench characterization setup used to evaluate the ac performance of the AD9644 or AD9641. It is critical that the signal sources used for the analog input and clock have very low phase noise (<1 ps rms jitter) to realize the optimum performance of the signal chain.
PAGE 4
UG-294 Evaluation Board User Guide WALL OUTLET 100V TO 240V AC 47Hz TO 63Hz SWITCHING POWER SUPPLY 6V DC 2A MAX SWITCHING POWER SUPPLY SIGNAL SYNTHESIZER ANALOG FILTER 6V DC 2A MAX SIGNAL SYNTHESIZER PC RUNNING ADC ANALYZER OR VisualAnalog USER SOFTWARE 09941-002 OPTIONAL CLOCK SOURCE ANALOG INPUT Figure 2. AD9644/AD9641 Evaluation Board Connection Rev.
PAGE 5
Evaluation Board User Guide UG-294 AD8376 is included on the AD9644 evaluation board at U401. However, the path into and out of the AD8376 can be configured in many different ways depending on the application; therefore, the parts in the input and output paths are left unpopulated. Users should see the AD8376 data sheet for additional information about this part and for configuring the inputs and outputs.
PAGE 6
UG-294 Evaluation Board User Guide Clock Circuitry PDWN The default clock input circuit that is populated on the AD9644 and AD9641 evaluation boards uses a simple transformer-coupled circuit using a high bandwidth 1:1 impedance ratio transformer (T503) that adds a very low amount of jitter to the clock path. The clock input is 50 Ω terminated and ac-coupled to handle single-ended sine wave types of inputs.
PAGE 7
Evaluation Board User Guide UG-294 JESD204A Output Modes The AD9641 evaluation platform supports one JESD204A output mode (see Table 1), and the AD9644 evaluation platform supports several JESD204A output modes (see Table 2 for typical configurations). Each mode requires a different FPGA configuration to capture data properly. Output Configuration A in Table 2 is the configuration for the default mode for the AD9644, and it consists of two converters, each of which has two links and one output lane.
PAGE 8
UG-294 Evaluation Board User Guide EVALUATION BOARD SOFTWARE QUICK START PROCEDURES testing to be performed (for example, in Figure 4 AD9644 has been selected). This section provides quick start procedures for using the AD9644 or AD9641 evaluation board. Both the default and optional settings are described. CONFIGURING THE BOARD 2. 3. 4. 5. 6. 7. 8. Connect the AD9644 or AD9641 evaluation board to the FIFO-GX data capture board, as shown in Figure 1 and Figure 2.
PAGE 9
Evaluation Board User Guide UG-294 09941-007 COLLAPSE DISPLAY BUTTON Figure 7. VisualAnalog, Main Window Rev.
PAGE 10
UG-294 4. Evaluation Board User Guide If the input clock divider is used or if testing in Configuration C is desired, a nonstandard FPGA configuration file is required. To program the FPGA with a nonstandard configuration, click ADC Data Capture, and the ADC Data Capture Settings window appears. Click the Capture Board tab. Under the FPGA area, select the appropriate FPGA configuration file from the Program Files: box (see Table 2 and Figure 8).
PAGE 11
Evaluation Board User Guide UG-294 3. Setting Up the SPI Controller Software After the ADC data capture board setup is complete, set up the SPI Controller software using the following procedure: Start the SPI Controller software by selecting the SPI controller software from the Start menu or by doubleclicking the SPIController software desktop icon. If prompted for a configuration file, select the appropriate one. If not, check the title bar of the window to determine which configuration is loaded.
PAGE 12
UG-294 Evaluation Board User Guide Adjusting the Amplitude of the Input Signal Next, adjust the amplitude of the input signal for each channel as follows: Adjust the amplitude of the input signal for Channel A so that the fundamental is at the desired level. (Examine the Fund Power reading in the left panel of the VisualAnalog Graph – AD9644 Average FFT window (see Figure 15).) 09941-012 1. Figure 12.
PAGE 13
Evaluation Board User Guide UG-294 Troubleshooting Tips If the FFT window remains blank after Run is clicked, use the following troubleshooting tips: If the FFT plot appears abnormal, use the following troubleshooting tips: • • • If you see a normal noise floor when you disconnect the signal generator from the analog input, be sure you are not overdriving the ADC. Reduce the input level, if necessary. In the VisualAnalog main window, click the Settings button in the Input Formatter box.
PAGE 14
UG-294 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK 09941-017 Figure 17. AD9644 DUT and Related Circuits Rev.
PAGE 15
Evaluation Board User Guide UG-294 09941-018 Figure 18. AD9644 Board Power Input and Supply Rev.
PAGE 16
UG-294 Evaluation Board User Guide 09941-019 Figure 19. AD9644 Passive Analog Input Circuits Rev.
PAGE 17
Evaluation Board User Guide UG-294 09941-020 Figure 20. AD9644 Optional Active Input Circuits Rev.
PAGE 18
UG-294 Evaluation Board User Guide 09941-021 Figure 21. AD9644 Clock Input Circuits Rev.
PAGE 19
Evaluation Board User Guide UG-294 09941-022 Figure 22. AD9644 SPI Configuration Circuit and FIFO Connections Rev.
PAGE 20
Evaluation Board User Guide 09941-023 UG-294 Figure 23. AD9644 Top Side Rev.
PAGE 21
UG-294 09941-024 Evaluation Board User Guide Figure 24. AD9644 Ground Plane (Layer 2) Rev.
PAGE 22
Evaluation Board User Guide 09941-025 UG-294 Figure 25. AD9644 Power Plane (Layer 3) Rev.
PAGE 23
UG-294 09941-026 Evaluation Board User Guide Figure 26. AD9644 Power Plane (Layer 4) Rev.
PAGE 24
Evaluation Board User Guide 09941-027 UG-294 Figure 27. AD9644 Ground Plane (Layer 5) Rev.
PAGE 25
UG-294 09941-028 Evaluation Board User Guide Figure 28. AD9644 Bottom Side Rev.
PAGE 26
UG-294 Evaluation Board User Guide 09941-029 Figure 29. AD9641 DUT and Related Circuits Rev.
PAGE 27
VIN 2 1 100MHZ AGND C210 10UF 10UF 1UF C212 DNI AGND 3 R204 100K EN CR201 E201 C 2 GND 1 VIN 5 4 AGND FB SW 1 IN IN U203 AGND DNI 2.2UH C213 10UF DNI DGND L202 2.2UH AGND DNI C214 10UF 2 2 DNI 2 E210 DNI 2 E211 C AGND DNI C216 10UF AGND DNI C215 10UF C A 100MHZ 1 E204 CR206 100MHZ 1 E202 A 100MHZ 1 1 100MHZ E203 CR205 ADP1713AUJZ-3.3-R7 OUT 5 AGND GND 2 VIN ADP1713AUJZ-3.
PAGE 28
UG-294 Evaluation Board User Guide 09941-031 Figure 31. AD9641 Passive Analog Input Circuit Rev.
PAGE 29
AMP_IN- AMP_IN+ 3 4 ETC1-1-13 SEC PRI 1 T401 Rev. B | Page 29 of 48 AGND AGND R402 40.2 R401 40.2 C401 0.1UF C402 0.1UF Figure 32. AD9641 Optional Active Input Circuit AGND PD_N_A 0 2 3 4 ADL5562_PRELIM 2 1 P401 3P3V_ANALOG R407 1.1K DNI VIN2 VIP1 VIN1 VIP2 VCC GND PD_N_A 12 ENBL R405 0 R406 1 0 R404 DNI R403 0 AGND VOP VON PAD VCOM 13 14 15 16 5 5 6 7 8 9 10 11 U401 AGND PAD C403 0.1UF DNI JPR0402 1 JP401 2 AGND C404 0.
PAGE 30
DNI AGND 2 3 4 5 1 J506 CLK AGND 2 3 4 5 1 J505 R528 DNI 0 AGND R529 49.9 AGND DNI DNI 0.1UF C523 0.1UF C522 C530 REF CLK 0.1UF R537 AGND AGND 2 AGND DIN 4 GND 1 VCC DNI 3P3V_ANALOG AGND 1 3 0.1UF C529 DOUT+ DOUT- OUT3 0 R527 0 R526 0 0 R525 DNI REFCLK+ REFCLK- REFCLK+ 0 R554 0 R553 0 0 R552 R551 0 DNI DNI DNI DNI AGND R549 DNI 0 AGND REFCLK- C506 0.1UF R550 CLK_IN+ DNI R540 24.9 0.1UF C528 R539 24.9 DNI 4 DNI 5 0.
PAGE 31
Evaluation Board User Guide UG-294 09941-034 Figure 34. AD9641 SPI Configuration Circuit and FIFO Connections Rev.
PAGE 32
Evaluation Board User Guide 09941-035 UG-294 Figure 35. AD9641 Top Side Rev.
PAGE 33
UG-294 09941-036 Evaluation Board User Guide Figure 36. AD9641 Ground Plane (Layer 2) Rev.
PAGE 34
Evaluation Board User Guide 09941-037 UG-294 Figure 37. AD9641 Power Plane (Layer 3) Rev.
PAGE 35
UG-294 09941-038 Evaluation Board User Guide Figure 38. AD9641 Power Plane (Layer 4) Rev.
PAGE 36
Evaluation Board User Guide 09941-039 UG-294 Figure 39. AD9641 Ground Plane (Layer 5) Rev.
PAGE 37
UG-294 09941-040 Evaluation Board User Guide Figure 40. AD9641 Bottom Side Rev.
PAGE 38
UG-294 Evaluation Board User Guide ORDERING INFORMATION BILL OF MATERIALS Table 4.
PAGE 39
Evaluation Board User Guide Item 23 Qty 12 24 25 2 1 Reference Designator E201, E202, E204, E205, E207, E210, E211, E212, E213, E214, E215, E216 E501, E502 F201 26 1 FL201 27 4 J101, J301, J303, J505 28 2 J401, J402 29 1 J501 30 4 JP201, JP202, JP203, JP204 31 32 33 2 6 4 L201, L202 L501, L502, L503, L504, L505, L506 P101, P401, P402, P501 34 1 P201 35 1 P202 36 1 P203 37 1 P601 38 36 39 40 2 1 R101, R107, R217, R219, R241, R303, R307, R319, R320, R323, R328, R339, R34
PAGE 40
UG-294 Evaluation Board User Guide Item 53 54 Qty 4 8 55 56 5 1 Reference Designator R315, R316, R335, R336 R317, R318, R337, R338, R501, R503, R505, R604 R401, R402, R603, R605, R626 R502 57 3 R510, R511, R512 58 2 R513, R514 59 1 R543 60 1 R555 61 12 62 5 R606, R613, R616, R618, R619, R620, R621, R622, R623, R624, R625, R628 T302, T303, T306, T307, T503 63 64 2 1 T401, T402 U101 65 1 U201 66 2 U202, U203 67 2 U204, U205 68 1 U206 69 2 U300, U602 70 1 U401 71 1
PAGE 41
Evaluation Board User Guide Item Qty Reference Designator 831 11 841 4 L301, L302, L403, L404, L405, L406, L409, L410, L411, L412, L507 L401, L402, L407, L408 851 1 P102 861 1 P602 871 7 881 43 891 UG-294 Description edge mount Inductor surface mount Value Manufacturer/Part No. 100 nH Coilcraft 0603CS-R10XGLU Inductor surface mount 1 µH Coilcraft 0603LS-102XGLB TSW-102-08-G-S Samtec TSW-102-08-G-S 6469169-1 Tyco 6469169-1 49.
PAGE 42
UG-294 Evaluation Board User Guide Item 4 Qty 31 5 7 6 8 7 4 Reference Designator C123, C231, C233, C235, C237, C239, C301, C305, C306, C401, C402, C403, C404, C501, C502, C504, C505, C506, C507, C512, C517, C518, C519, C523, C529, C530, C531, C532, C533, C601, C604 C201, C232, C234, C236, C238, C240, C405 C204, C206, C207, C209, C225, C227, C228, C230 C205, C208, C226, C229 8 2 C210, C211 9 3 C302, C303, C304 10 2 C503, C508 11 1 C510 12 2 C511, C513 13 5 C524, C525, C526, C527,
PAGE 43
Evaluation Board User Guide Item 31 Qty 1 Reference Designator P601 32 19 33 1 R101, R303, R307, R319, R320, R404, R405, R506, R522, R523, R524, R525, R531, R537, R548, R551, R552, RS201, RS205 R201 34 1 R222 35 36 37 38 1 2 2 5 R302 R313, R314 R315, R316 R317, R318, R501, R503, R604 39 2 R401, R402 40 41 4 1 R407, R603, R605, R626 R502 42 11 43 3 R509, R515, R516, R517, R518, R519, R544, R545, R601, R609, R610 R510, R511, R512 44 2 R513, R514 45 46 1 3 R543 R602, R611, R612 4
PAGE 44
UG-294 Evaluation Board User Guide Item 59 Qty 1 Reference Designator U601 60 1 4 C213, C214, C215, C216 611 7 621 2 C406, C407, C408, C522, C528, C602, C603 C409, C410 631 1 C509 641 651 6 4 E203, E206, E208, E209, E210, E211 J302, J502, J503, J505 661 2 JP202, JP204 671 1 JP401 681 691 701 711 2 3 4 1 L201, L202 L301, L405, L406 L401, L402, L403, L404 P602 721 731 2 6 R102, R103 R105, R301, R304, R505, R529, R530 741 751 1 1 R106 R204 761 771 1 36 781 2 R305 R306, R30
PAGE 45
Evaluation Board User Guide UG-294 NOTES Rev.
PAGE 46
UG-294 Evaluation Board User Guide NOTES Rev.
PAGE 47
Evaluation Board User Guide UG-294 NOTES Rev.
PAGE 48
UG-294 Evaluation Board User Guide NOTES 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.