TOUCH SCREEN CONTROLLER TIPS

PublishTime：2022-07-15

●Burr-Brown makes a number of specialized analog-to-digital converters for touch screen applications.The ADS7843, ADS7845, and the new ADS7846 converters all are designed for specific touch screen applications. Applications using these devices can benefit greatly from the tips presented in this application bulletin.Most of the examples discuss the ADS7843, but the techniques shown are applicable to all of the devices.
●We begin by looking at the theory of operation of a resistive touch screen, and using these specialized A/D converters with such a screen.Techniques are presented for improving accuracy and minimizing errors; the operation of the pen interrupt line (PENIRQ)is explored,ESD protection methods for the converters, and issues surrounding interfacing these converters to popular microprocessors are discussed.

Brand of Product：	KENTEC DISPLAY
Part#：	ADS7843 、 ADS7845 、 ADS7846 More Part#
Product Category：	TOUCH SCREEN CONTROLLER More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	April, 2000
Version Number：
Data Encoding：	SBAA036
Data Size：	1.1 MB

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