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ADS7845

Part Number	ADS7845
Manufacturer	Burr-Brown Corporation
Description	TOUCH SCREEN CONTROLLER
Published	Mar 23, 2005
Detailed Description	® ADS 784 ADS7845 5 TOUCH SCREEN CONTROLLER FEATURES q 5-WIRE TOUCH SCREEN INTERFACE q RATIOMETRIC CONVERSION q SING...
Datasheet	ADS7845 PDF File

Overview

® ADS 784 ADS7845 5 TOUCH SCREEN CONTROLLER FEATURES q 5-WIRE TOUCH SCREEN INTERFACE q RATIOMETRIC CONVERSION q SINGLE SUPPLY: 2V to 5V q UP TO 125kHz CONVERSION RATE q SERIAL INTERFACE q PROGRAMMABLE 8- OR 12-BIT RESOLUTION q AUXILIARY ANALOG INPUTS q FULL POWER-DOWN CONTROL DESCRIPTION The ADS7845 is a 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface and low on-resistance switches for driving touch screens.
Typical power dissipation is 750µW at a 125kHz throughput rate and a +2.
7V supply.
The reference voltage (VREF) can be varied between 1V and +VCC, providing a corresponding input voltage range of 0V to VREF.
The device includes a shutdown mode w...

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