EVAL-AD765x-1SDZ User Guide UG-417 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 AD7656-1/AD7657-1/AD7658-1, 250 kSPS, 6-Channel, Simultaneous Sampling, Bipolar 16-/14-/12-Bit ADCs FEATURES GENERAL DESCRIPTION Full featured evaluation board for the AD7656-1/AD7657-1/ The EVAL-AD7656-1SDZ/EVAL-AD7657-1SDZ/EVAL-AD7658- AD7658-1 1SDZ are full featured evaluation boards that can be used to easily PC control in conjunction with the system demonstration evaluate all features of the AD7656-1/AD7657-1/AD7658-1. The platform (EVAL-SDP-CB1Z) AD7656-1/AD7657-1/AD7658-1 are 16-/14-/12-bit, 6-channel, PC software for control and data analysis (time and 250 kSPS simultaneous sampling ADCs, respectively. Each part frequency domain) contains six 16-, 14-, or 12-bit, low power SAR ADCs and can Standalone capability operate from a single 4.75 V to 5.25 V power supply or dual 12 V power supplies. The parts feature throughput rates of up EVALUATION KIT CONTENTS to 250 kSPS. EVAL-AD7656-1SDZ, EVAL-AD7657-1SDZ, or The evaluation boards can be controlled via the system demon- EVAL-AD7658-1SDZ evaluation board stration platform (SDP). The EVAL-SDP-CB1Z board allows Evaluation software CD for the AD7656-1/AD7657-1/ the evaluation boards to be controlled via the USB port of a PC AD7658-1 using the AD7656-1/AD7657-1/AD7658-1 evaluation software. 9 V mains power supply adapter The EVAL-AD7656-1SDZ/EVAL-AD7657-1SDZ/EVAL- ADDITIONAL EQUIPMENT NEEDED AD7658-1SDZ generates all required power supplies on board and supplies power to the EVAL-SDP-CB1Z controller board. EVAL-SDP-CB1Z system demonstration platform, includes a USB cable On-board components include the following: Precision analog signal source AD8597: ultralow distortion, ultralow noise op amp (single) SMB cables AD8031: 2.7 V, 800 A, 80 MHz rail-to-rail I/O single amplifier PC running Windows XP SP2, Windows Vista, or Windows 7 ADP1613: step-up PWM dc-to-dc switching converter with USB 2.0 port ADP3303-5: high accuracy anyCAP 200 mA low dropout ONLINE RESOURCES linear regulator ADP2301: 1.2 A, 20 V, 1.4 MHz nonsynchronous step-down Documents switching regulator AD7656-1/AD7657-1/AD7658-1 data sheet ADM1185: quad voltage monitor and sequencer EVAL-AD7656-1SDZ/EVAL-AD7657-1SDZ/ ADP190: logic controlled, high-side power switch EVAL-AD7658-1SDZ user guide ADG3308: low voltage, 1.15 V to 5.5 V, 8-channel bidirectional Required Software logic level translator EVAL-AD7656-1SDZ/EVAL-AD7657-1SDZ/ ADR431: ultralow noise XFET voltage reference with current EVAL-AD7658-1SDZ evaluation software sink and source capability AD780: 2.5 V/3.0 V ultrahigh precision band gap voltage reference A functional block diagram is shown in Figure 1, and various link options are described in the Link Configuration Options section. For full details on the AD7656-1/AD7657-1/AD7658-1, see the AD7656-1/AD7657-1/AD7658-1 data sheet, which should be consulted in conjunction with this user guide when using these evaluation boards. PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 Page 1 of 24 UG-417 EVAL-AD765x-1SDZ User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Analog Inputs.............................................................................. 14 Evaluation Kit Contents ................................................................... 1 Reference Options ...................................................................... 14 Additional Equipment Needed ....................................................... 1 Sockets/Connectors ................................................................... 14 Online Resources .............................................................................. 1 Modes of Operation ....................................................................... 15 General Description ......................................................................... 1 SDP Controlled Mode ............................................................... 15 Revision History ............................................................................... 2 Standalone Mode ........................................................................ 15 Functional Block Diagram .............................................................. 3 How to Use the Software for Evaluating the AD7656-1/ AD7657-1/AD7658-1 .................................................................... 16 Getting Started .................................................................................. 4 Setting Up the System for Data Capture ................................. 16 Quick Start Steps .......................................................................... 4 Overview of the Main Window ................................................ 18 Software Installation Procedures ................................................ 5 Generating a Waveform Analysis Report ................................ 20 Evaluation Board Setup Procedures ........................................... 8 Generating a Histogram of the ADC Code Distribution ..... 21 Evaluation Board Hardware ............................................................ 9 Generating a Fast Fourier Transform of AC Characteristics ...... 22 AD7656-1/AD7657-1/AD7658-1 Device Description ............ 9 Generating a Summary of the Waveform, Histogram, and Power Supplies .............................................................................. 9 Fast Fourier Transform .............................................................. 23 Link Configuration Options ......................................................... 10 Related Links ................................................................................... 24 Setup Conditions ........................................................................ 10 Evaluation Board Circuitry ........................................................... 14 REVISION HISTORY 6/13Revision 0: Initial Version Rev. 0 Page 2 of 24