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 FEATURES GENERAL DESCRIPTION Full featured evaluation board in conjunction with low This user guide describes the evaluation board for evaluating the voltage digiPOT motherboard (EVAL-MB-LV-SDZ) AD5142Aa quad-channel, 256-position, nonvolatile memory, Various test circuits digital potentiometer. With versatile programmability, the Various ac/dc input signals AD5142A allows multiple modes of operation, including PC control via a separately purchased system demonstration read/write access in the RDAC and EEMEM registers, platform (SDP-B or SDP-S) increment/decrement of resistance, resistance changes in 6 dB PC software for control scales, wiper setting readback, and extra EEMEM for storing user-defined information, such as memory data for other PACKAGE CONTENTS components or a lookup table. EVAL-AD5142ADBZ board The AD5142A supports a dual-supply 2.25 V to 2.75 V operation EVAL-MB-LV-SDZ motherboard and a single-supply 2.3 V to 5.5 V operation, making the device CD that includes suitable for battery-powered applications and many other appli- Self-installing software that allows users to control the 2 cations. In addition, the AD5142A uses a versatile I C-compatible board and exercise all functions of the device serial interface that operates in fast mode, allowing speeds of up to Electronic version of the AD5142A data sheet 2 400 kbps and supporting the selection of up to nine different I C Electronic version of the UG-472 user guide addresses. The EVAL-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 Figure 1. Digital Picture of Evaluation Board with Low Voltage DigiPOT Motherboard and System Demonstration Platform PLEASE SEE THE LAST PAGE FOR AN IMPORTANT WARNING AND LEGAL TERMS AND CONDITIONS. Rev. 0 Page 1 of 20 11009-001UG-472 Evaluation Board User Guide TABLE OF CONTENTS Features .............................................................................................. 1 Evaluation Board Software ...............................................................8 Package Contents .............................................................................. 1 Installing the Software ..................................................................8 General Description ......................................................................... 1 Software Operation .................................................................... 10 EVAL-AD5142ADBZ with Motherboard and SDP-S .................. 1 Evaluation Board Schematics and Artwork ................................ 11 Revision History ............................................................................... 2 Motherboard ............................................................................... 11 Evaluation Board Hardware ............................................................ 3 Daughter Board .......................................................................... 15 Power Supplies .............................................................................. 3 Ordering Information .................................................................... 18 Test Circuits ................................................................................... 4 Bill of Materials ........................................................................... 18 REVISION HISTORY 11/12Revision 0: Initial Version Rev. 0 Page 2 of 20