Evaluation Board User Guide

ManualsBrandsAnalog Devices ManualsComputer HardwareAD9272

UG-001

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluating the AD9272/AD9273 for Ultrasound Systems

Please see the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 24

FEATURES

Full featured evaluation board for the AD9272/AD9273

SPI and alternate clock options

Internal and external reference options

VisualAnalog and SPI Controller software interfaces

EQUIPMENT NEEDED

Analog signal source and antialiasing filter

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

PHP-SZ, provided

Linear bench top dc voltage source (0 V to 1.6 V), not

required for CW Doppler mode

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

or Windows XP

USB 2.0 port, recommended (USB 1.1 compatible)

AD9272/AD9273 evaluation board

HSC-ADC-EVALCZ FPGA-based data capture kit

For CW Doppler mode: spectrum analyzer

For CW Doppler mode: dc voltage source: +

5 V w/100 mA each

DOCUMENTS NEEDED

AD9272 and AD9273 data sheets

HSC-ADC-EVALCZ data sheet, High Speed Converter

Evaluation Platform (FPGA-based data capture kit)

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, Interface to High Speed ADCs via SPI

SOFTWARE NEEDED

VisualAnalog

SPI Controller

GENERAL DESCRIPTION

This document describes the AD9272/AD9273 evaluation

board, which provides all of the support circuitry required to

operate the AD9272/AD9273 in their various modes and

configurations. The application software used to interface with

the devices is also described.

The AD9272/AD9273 data sheet, available at www.analog.com,

provides additional information and should be consulted when

using the evaluation board. All documents and software tools

are available at http://www.analog.com/fifo. For any questions,

send an email to highspeed.converters@analog.com.

TYPICAL MEASUREMENT SETUP

07782-001

Figure 1. AD9272-65EBZ/AD9272-80KITZ/AD9273-50EBZ Evaluation Board and HSC-ADC-EVALCZ Data Capture Board

Summary of content (24 pages)

PAGE 1
Evaluation Board User Guide UG-001 One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.
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UG-001 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Default Operation and Jumper Selection Settings ....................5 Equipment Needed ........................................................................... 1 Evaluation Board Software Quick Start Procedures .....................7 Documents Needed ..........................................................................
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Evaluation Board User Guide UG-001 EVALUATION BOARD HARDWARE The AD9272/AD9273 evaluation board provides all of the support circuitry required to operate the AD9272/AD9273 in its various modes and configurations. Figure 2 shows the typical bench characterization setup used to evaluate the ac performance of the AD9272/AD9273. 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.
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UG-001 Evaluation Board User Guide WALL OUTLET 100V TO 240V AC 47Hz TO 63Hz SWITCHING POWER SUPPLY SWITCHING POWER SUPPLY 6V DC 2A MAX SIGNAL SYNTHESIZER 6V DC 2A MAX ANALOG INPUT SPECTRUM ANALYZER CW OUTPUT SIGNAL SYNTHESIZER OPTIONAL CLOCK SOURCE GAIN CONTROL INPUT Figure 2. Evaluation Board Connection Rev.
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Evaluation Board User Guide UG-001 PDWN DEFAULT OPERATION AND JUMPER SELECTION SETTINGS This section explains the default and optional settings or modes allowed on the AD9272/AD9273 Rev. A evaluation board. Power Circuitry Connect the switching power supply that is supplied in the evaluation kit between a rated 100 V ac to 240 V ac wall outlet at 47 Hz to 63 Hz and P701.
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UG-001 Evaluation Board User Guide between the AD9272/AD9273 CWDx± outputs and the AD8339 inputs. DOUTx+, DOUTx− If an alternative data capture method to the setup described in Figure 2 is used, optional receiver terminations, R701 to R710, can be installed next to the high speed backplane connector. Rev.
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Evaluation Board User Guide UG-001 EVALUATION BOARD SOFTWARE QUICK START PROCEDURES This section provides quick start procedures for using the AD9272/ AD9273 either on the evaluation board or in a system level design. Both the default and optional settings are described. CONFIGURING THE BOARD Before using the software for testing, configure the evaluation board as follows: Connect the evaluation board to the data capture board as shown in Figure 1 and Figure 2. 2. Connect one 6 V, 2.
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UG-001 Evaluation Board User Guide Setting Up the SPI Controller COLLAPSE DISPLAY BUTTON After the ADC data capture board setup is completed, set up the SPI Controller using the following procedure: SETTINGS BUTTON Open the SPI Controller software by going to the Start menu or double-clicking the SPI Controller 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.
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Evaluation Board User Guide UG-001 In the ADC A tab of SPI Controller, find the OFFSET(10) box. Use the drop-down box labeled Offset Adj to perform an offset correction to the LNA if the LNA power setting BIAS_CURR_A(12) has been set low. The default value is 32. Select 33 if the low LNA power setting BIAS_CURR_A(12) is used. 07782-018 5. 07782-017 Figure 12. SPI Controller, OFFSET(10) Box Figure 10.
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UG-001 Evaluation Board User Guide 0 Adjusting the Amplitude of the Input Signal fIN = 3.5MHz @ –1dBFS LNA = 6× VGAIN = 1V FILTER TUNED HPF = 700kHz –10 Next, adjust the amplitude of the input signal for each channel as follows: –20 1. –40 –30 AMPLITUDE (dBFS) Adjust the amplitude of the input signal so that the fundamental is at the desired level. (Examine the Fund Power reading in the left panel of the VisualAnalog FFT window.
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UG-001 07782-030 Evaluation Board User Guide Figure 19. SPI Controller, CROSSPOINT SWITCH(2D) Box 8. Examine the spectrum analyzer for the CW Doppler output (see Figure 20 for an example). 0 –10 FREQUENCY = 2.3MHz CWD1±, DIFFERENTIAL OUTPUT AMPLITUDE (dBm) –20 –30 –40 –50 –60 –70 07782-004 –80 –90 –100 07782-029 0 Figure 18. SPI Controller, MODES(8) Box 7. In the ADC x tab of the SPI Controller, where x is the channel to which an analog input is applied, find the CROSSPOINT SWITCH(2D) box.
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UG-001 Evaluation Board User Guide EVALUATION BOARD SCHEMATICS AND ARTWORK 07782-005 Figure 21. Evaluation Board Schematic, DUT Analog Input Circuits Rev.
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Evaluation Board User Guide UG-001 07782-006 Figure 22. Evaluation Board Schematic, DUT Analog Input Circuits (Continued) Rev.
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UG-001 Evaluation Board User Guide 07782-007 Figure 23. Evaluation Board Schematic, DUT, VREF, and Decoupling Rev.
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Evaluation Board User Guide UG-001 07782-008 Figure 24. Evaluation Board Schematic, Clock, SPI, and Gain Circuits Rev.
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UG-001 Evaluation Board User Guide 07782-009 Figure 25. Evaluation Board Schematic, Power Supply, CW Doppler, Digital Output Interface Rev.
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UG-001 07782-010 Evaluation Board User Guide Figure 26. Evaluation Board Layout, Top Side Rev.
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Evaluation Board User Guide 07782-011 UG-001 Figure 27. Evaluation Board Layout, Ground Plane (Layer 2) Rev.
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UG-001 07782-012 Evaluation Board User Guide Figure 28. Evaluation Board Layout, Power Plane (Layer 3) Rev.
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Evaluation Board User Guide 07782-013 UG-001 Figure 29. Evaluation Board Layout, Power Plane (Layer 4) Rev.
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UG-001 07782-014 Evaluation Board User Guide Figure 30. Evaluation Board Layout, Ground Plane (Layer 5) Rev.
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Evaluation Board User Guide 07782-015 UG-001 Figure 31. Evaluation Board Layout, Bottom Side Rev.
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Evaluation Board User Guide UG-001 ORDERING INFORMATION BILL OF MATERIALS Table 1.
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UG-001 Evaluation Board User Guide Item 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 Qty 1 1 1 3 2 6 1 1 1 1 1 1 1 1 1 1 Reference Designator R344 R345 R414 R420, R421, R716 R447, R448 R453, R454, R801, R802, R803, R804 R446 R336 T401 T402 U601 U602 U302 U401 U402 U701 50 51 52 53 54 2 1 1 1 1 U704, U707 U705 U706 U403 U301 Description Resistor, thick film, SMT 0402, 33 kΩ, 1/16 W, 1% Resistor, thick film, SMT 0402, 10.5 kΩ, 1/16 W, 1% Resistor, thick film, SMT 0402, 4.