AD6642EBZ

Evaluation Board User Guide UG-232 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 AD6642/AD6657 Analog-to-Digital Converters FEATURES DOCUMENTS NEEDED Full featured evaluation board for the AD6642/AD6657 SPI interface for setup and control External, on-board oscillator or AD9517 clocking options Balun/transformer or amplifier input drive options LDO regulator power supply VisualAnalog® and SPI controller software interfaces AD6642 or AD6657 data sheet HSC-ADC-EVALCZ data sheet 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 ADC Testing and Evaluation 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, Inc. 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) AD6642 or AD6657 evaluation board HSC-ADC-EVALCZ FPGA-based data capture kit SOFTWARE NEEDED VisualAnalog SPI controller GENERAL DESCRIPTION This document describes the AD6642 and AD6657 evaluation board, which provides all of the support circuitry required to operate the AD6642 or AD6657 in their various modes and configurations. The application software used to interface with the devices is also described. The AD6642 and AD6657 data sheets provide additional information and should be consulted when using the evaluation board. All documents and software tools are available at www.analog.com/fifo. For additional information or questions, send an email to highspeed.converters@analog.com. 09572-001 TYPICAL MEASUREMENT SETUP Figure 1. AD6642 and AD6657 Evaluation Board and HSC-ADC-EVALCZ Data Capture Board Please see the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 32 UG-232 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1  Input Signals...................................................................................3  Equipment Needed ........................................................................... 1  Output Signals ...............................................................................3  Software Needed ............................................................................... 1  Default Operation and Jumper Selection Settings ....................5  Documents Needed .......................................................................... 1  Evaluation Board Software Quick Start Procedures .....................6  General Description ......................................................................... 1  Configuring the Board .................................................................6  Typical Measurement Setup ............................................................ 1  Using the Software for Testing.....................................................6  Revision History ............................................................................... 2  Evaluation Board Schematics and Artwork ................................ 11  Evaluation Board Hardware ............................................................ 3  Ordering Information .................................................................... 25  Power Supplies .............................................................................. 3  Bill of Materials ........................................................................... 25  REVISION HISTORY 12/10—Revision 0: Initial Version Rev. 0 | Page 2 of 32 Evaluation Board User Guide UG-232 EVALUATION BOARD HARDWARE The AD6642 and AD6657 evaluation board provides all of the support circuitry required to operate these parts in their various modes and configurations. Figure 2 shows the typical bench characterization setup used to evaluate the ac performance of the AD6642 or AD6657. It is critical that the signal sources used for the analog input and clock have very low phase noise (