ANALOG DEVICES UG-324 Service Manual

Evaluation Board User Guide

UG-324

10202-001

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 AD5116 Digital Potentiometer

FEATURES

Full-featured evaluation board for the AD5116
Several test circuits
Various ac/dc input signals

PACKAGE CONTENTS

EVAL-AD511xSDZ evaluation board
CD that includes

Electronic version of the AD5116 data sheet
Electronic version of the UG-324 user guide

DIGITAL PICTURE OF EVALUATION BOARD

GENERAL DESCRIPTION

This user guide describes the evaluation board for evaluating the

AD5116—a single-channel, 64-position, nonvolatile memory

digital potentiometer.

The AD5116 supports single-supply 2.3 V to 5.5 V operation,
making the device suited for battery-powered applications and
many other applications, offering guaranteed low resistor
tolerance errors of ±8% and high bandwidth while allowing up
to ±6 mA current density in the A, B, and W pins.

A simple push-button interface allows manual switching and
can

save the last wiper position automatically into the EEPROM,
making it suits to applications that require a power-up in the last
wiper position.

Complete specifications for the AD5116 part can be found in
the AD5116 data sheet, which is available from Analog Devices,
Inc., and should be consulted in conjunction with this user
guide when using the evaluation board.

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

Figure 1.

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UG-324 Evaluation Board User Guide

TABLE OF CONTENTS

Features .............................................................................................. 1

Package Contents .............................................................................. 1

General Description ......................................................................... 1

Digital Picture of Evaluation Board ............................................... 1

Revision History ............................................................................... 2

Evaluation Board Hardware ............................................................ 3

Power Supplies .............................................................................. 3

REVISION HISTORY

11/11—Revision 0: Initial Version

ASE

Configuration ........................................................................3

Push Buttons ..................................................................................3

Test Circuits ...................................................................................4

Evaluation Board Schematics and Artwork ...................................5

Ordering Information .......................................................................8

Bill of Materials ..............................................................................8

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Evaluation Board User Guide UG-324

EVALUATION BOARD HARDWARE

POWER SUPPLIES

The EVAL-AD5116SBZ supports using single power supplies.

The evaluation board should be powered externally by the
EXTERNAL-1 and EXTERNAL-2 connectors, as described in
Table 2. The link LK8 should be connected as shown in Tabl e 1.

All supplies are decoupled to ground using 10 µF tantalum and

0.1 µF ceramic capacitors.

Table 1. Link Connections

Link No. Option
LK8 +5V and EXT

Table 2. Maximum and Minimum Voltages of the Connectors

Connector No. Label Voltage

EXTERNAL-1 VDD Analog positive power supply, VDD. It is 2.3 V to 5.5 V.
EXTERNAL-2 AGND Analog ground, AGND.

CONFIGURATION

ASE

The part allows the user to configure the automatic store enable
before powering up the board. If the
the led, D2, indicates when minimum/maximum resistance has
been reached. The AD5116 data sheet provides a detailed
description of this pin.

ASE

function is enabled,

PUSH BUTTONS

The E VA L -AD5116EBZ provides three switches to operate the
part:

• PU. This switch increases the resistance between R

• PD. This switch decreases the resistance between R

• NVM. This push button is enabled when the

is disabled and allows manually storage of the RDAC
register into the NVM.

ASE

.

WB

.

WB

function

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