ANALOG DEVICES UG-236 Service Manual

Evaluation Board User Guide

EVAL-AD5254SDZ

SYSTEM DEVELOPMENT

PLATFORM

09579-001

UG-236

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

Evaluation Board for the AD5254 Digital Potentiometer

FEATURES

Full featured evaluation board for the AD5254
Several test circuits
Various ac/dc input signals
PC control via a separately purchased system development

platform (SDP)
PC control software
12 extra bytes in EEMEM for user-defined information
Resistor tolerance error stored in EEMEM

PACKAGE CONTENTS

EVAL-AD5254SDZ evaluation board
CD that includes

Self-installing software that allows users to control the

board and exercise all functions of the device
Electronic version of the AD5254 data sheet
Electronic version of the UG-236 document

GENERAL DESCRIPTION

This user guide describes the evaluation board for evaluating the

AD5254—a quad-channel, 256-position, nonvolatile memory

digital potentiometer. With versatile programmability, the AD5254
allows multiple modes of operation, including read/write access
in the RDAC and EEMEM registers, increment/decrement of
resistance, resistance changes in ±6 dB scales, wiper setting read­back, and extra EEMEM for storing user-defined information,
such as memory data for other components or a lookup table.

The AD5254 supports a dual-supply ±2.25 V to ±2.75 V operation
and a single-supply 2.7 V to 5.5 V operation, making the device
suited for battery-powered applications and many other appli­cations. In addition, the AD5254 uses a versatile I
interface that operates in fast mode, allowing speeds of up to
400 kbps and supporting the selection of up to four different I
addresses.

The EVA L-AD5254SDZ can operate in single-supply and dual­supply mode and incorporates an internal power supply from
the USB.

Complete specifications for the AD5254 part can be found in
the AD5254 data sheet, which is available from Analog Devices,
Inc., and should be consulted in conjunction with this user
guide when using the evaluation board.

2

C serial

2

C

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

DIGITAL PICTURE OF EVALUATION BOARD WITH SYSTEM DEVELOPMENT PLATFORM

Figure 1.

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