Evaluation Board User Guide UG-473 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 AD5141 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) AD5141a quad-channel, 256-position, nonvolatile memory, Various test circuits digital potentiometer. With versatile programmability, the AD5141 Various ac/dc input signals allows multiple modes of operation, including read/write access PC control via a separately purchased system demonstration in the RDAC and EEMEM registers, increment/decrement of platform (SDP-B or SDP-S) resistance, resistance changes in 6 dB scales, wiper setting read- PC software for control back, and extra EEMEM for storing user-defined information, such as memory data for other components or a lookup table. PACKAGE CONTENTS The AD5141 supports a dual-supply 2.25 V to 2.75 V operation EVAL-AD5141DBZ board and a single-supply 2.3 V to 5.5 V operation, making the device EVAL-MB-LV-SDZ motherboard suitable for battery-powered applications and many other appli- CD that includes cations. In addition, the AD5141 can be configured as a versatile Self-installing software that allows users to control the 2 I C or SPI serial interface. The EVAL-AD5141DBZ can operate board and exercise all functions of the device in single-supply or dual-supply mode and incorporates an internal Electronic version of the AD5141 data sheet power supply from the USB. Electronic version of the UG-473 user guide Complete specifications for the AD5141 part can be found in the AD5141 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-AD5141DBZ 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 11010-001UG-473 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-AD5141DBZ 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 Digital Interface ............................................................................ 4 Bill of Materials ........................................................................... 18 Test Circuits ................................................................................... 4 REVISION HISTORY 11/12Revision 0: Initial Version Rev. 0 Page 2 of 20