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Evaluation Board User Guide
UG-472
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 AD5142A Digital Potentiometer
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 20
FEATURES
Full featured evaluation board in conjunction with low
voltage digiPOT motherboard (EVAL-MB-LV-SDZ)
Various test circuits
Various ac/dc input signals
PC control via a separately purchased system demonstration
platform (SDP-B or SDP-S)
PC software for control
PACKAGE CONTENTS
EVAL-AD5142ADBZ board
EVAL-MB-LV-SDZ motherboard
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the AD5142A data sheet
Electronic version of the UG-472 user guide
GENERAL DESCRIPTION
This user guide describes the evaluation board for evaluating the
AD5142A—a quad-channel, 256-position, nonvolatile memory,
digital potentiometer. With versatile programmability, the
AD5142A 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 AD5142A supports a dual-supply ±2.25 V to ±2.75 V operation
and a single-supply 2.3 V to 5.5 V operation, making the device
suitable for battery-powered applications and many other appli-
cations. In addition, the AD5142A uses a versatile I
2
C-compatible
serial interface that operates in fast mode, allowing speeds of up to
400 kbps and supporting the selection of up to nine different I
2
C
addresses. The E VAL -AD5142DBZ can operate in single-supply
or dual-supply mode and incorporates an internal power supply
from the USB.
Complete specifications for the AD5142A part can be found in the
AD5142A data sheet, which is available from Analog Devices, Inc.,
and should be consulted in conjunction with this user guide
when using the evaluation board.
EVAL-AD5142ADBZ WITH MOTHERBOARD AND SDP-S
11009-001
Figure 1. Digital Picture of Evaluation Board with Low Voltage DigiPOT Motherboard and System Demonstration Platform
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