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AD7843 Touch Screen Digitizer

AD7843 Description

a .
The AD7843 is a 12-bit successive-approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens.

AD7843 Features

* 4-Wire Touch Screen Interface Specified Throughput Rate of 125 kSPS Low Power Consumption: 1.37 mW Max at 125 kSPS with VCC = 3.6 V Single Supply, VCC of 2.2 V to 5.25 V Ratiometric Conversion High-Speed Serial Interface Programmable 8- or 12-Bit Resolution Two Auxiliary Analog Inputs Shutdown Mode:

AD7843 Applications

* Personal Digital Assistants Smart Hand-Held Devices Touch Screen Monitors Point-of-Sales Terminals Pagers X+ X
* Y+ Y
* Touch Screen Digitizer AD7843 FUNCTIONAL BLOCK DIAGRAM +VCC PENIRQ AD7843 PEN INTERRUPT T/H 4-TO-1 I/P MUX IN3 IN4 VREF CHARGE REDISTRIBUTION DAC COMP GND +VC

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Touch Screen Digitizer Analog Devices
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