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AD7843

Part Number	AD7843
Manufacturer	Analog Devices
Description	Touch Screen Digitizer
Published	Mar 23, 2005
Detailed Description	a FEATURES 4-Wire Touch Screen Interface Specified Throughput Rate of 125 kSPS Low Power Consumption: 1.37 mW Max at 125...
Datasheet	AD7843 PDF File

Overview

a 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: 1 ␮ A max 16-Lead QSOP and TSSOP Packages 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 +VCC SAR + ADC CONTROL LOGIC SPORT GENERAL DESCRIP...

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