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FEATURES

* STAND-ALONE CAPABILITY

* FLEXIBLE CLOCK PROGRAMMING

* USER-CONFIGURABLE A/D CONVERTER

OPERATION

* ANALOG BREADBOARD AREA

* DIGITAL BREADBOARD AREA

* FLEXIBLE REFERENCE VOLTAGE

PROGRAMMING

APPLICATIONS

* DATA ACQUISTION

* PERSONAL DIGITAL ASSISTANTS

* 4- OR 5-WIRE RESISTIVE TOUCH SCREEN

* PORTABLE INSTRUMENTS

DESCRIPTION

The DEM-ADS7843E/45E evaluation fixture is designed

for quick evaluation of Burr-Brown’s

ADS7843E (4-wire) and ADS7845E (5-wire) touchpanel

controllers. The board has features that allow the

user to evaluate all the functions of the analog-todigital

converter. The options offered to the user

include a flexible clock generator circuit, an analog

breadboard area, a digital breadboard area, and an

easily-configurable voltage reference. The DEMADS7843E/

45E has been designed to accommodate

stand-alone operation, allowing the user to easily connect

directly to 4-wire (ADS7843E) or 5-wire

(ADS7845E) touch-screen panels and to an external

processor. This evaluation fixture has a quick-release

socket for easy evaluation of mulitiple converters or a

solder footprint to allow the user to solder the DUT

directly to the board.