Part Number
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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
|
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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