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.