ANALOG DEVICES UG-094 Service Manual

Evaluation Board User Guide

SYSTEM DEMONSTRATION

PLATFORM

EVAL-AD527xSDZ

08878-111

UG-094

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: [phone] • Fax: [phone] • www.analog.com

Evaluation Board for 10-Bit, Serial Input, High Precision Digital Rheostats

FEATURES

Full-featured evaluation board for the AD5270/AD5272
4-wire ohm measurement capability
Various link options
PC control via a separately purchased system demonstration

platform (SDP)
PC software for control
50-times programmable (50-TP)
1% resistance tolerance error

PACKAGE CONTENTS

AD527xSDZ evaluation board
AD5270 or AD5272 device

3.3 V voltage regulator (ADP3303)
CD that includes

Self-installing software that allows users to control the

board and exercise all functions of the device
Electronic version of the AD5270 data sheet
Electronic version of the AD5272 data sheet
Electronic version of UG-094

GENERAL DESCRIPTION

This user guide describes the evaluation board for evaluating
the AD5270 and AD5272 digital rheostats. These devices are a
single-channel, 1024-position digital rheostat with less than ±1%
end-to-end resistor tolerance error and 50-time programmable
memory.

The AD5270 and AD5272 support a dual-supply ±2.5 V to ±2.75 V
operation and a single-supply 2.7 V to 5.5 V operation, making
them suited for battery-powered applications and many other
applications.

The AD5270 uses a versatile 3-wire serial interface that operates
at clock rates up to 50 MHz, and it is compatible with standard
SPI, QSPI™, MICROWIRE™, and DSP interface standards.

The AD5272 uses a versatile I
fast mode, allowing speed until 400 kbps. The device allows the
selection of up to three different I

The EVAL-AD527xSDZ evaluation board can operate in single­supply and dual-supply mode and incorporates an internal power
supply from the USB.

Complete specifications for the AD5270 and AD5272 parts can
be found in their datasheets, which are available from Analog
Devices, Inc., and should be consulted in conjunction with this
user guide when using the evaluation board.

2

C serial interface that operates in

2

C addresses.

DIGITAL PICTURE OF EVALUATION B OARD WITH SYSTEM DEMONSTRATION PLATFORM

PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.

Figure 1.

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