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ADS7846 Datasheet PDF

Part Series:ADS7846 Series
Description:Touch Screen Controllert
Document:ADS7846IRGVR Datasheet PDF (83 Pages)

ADS7846 Datasheet PDF

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ADS7846 - TI Specifications

TYPE
DESCRIPTION
Case/Package
TSSOP-16
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ADS7846 - TI Function Overview

The ADS7846 is a next-generation version to the industry standard ADS7843 4-wire touch screen controller. The ADS7846 is 100% pin-compatible with the existing ADS7843, and drops into the same socket. This allows for easy upgrade of current applications to the new version. Only software changes are required to take advantage of the added features of direct battery measurement, temperature measurement, and touch-pressure measurement. The ADS7846 also has an on-chip 2.5V reference that can be used for the auxiliary input, battery monitor, and temperature measurement modes. The reference can also be powered down when not used to conserve power. The internal reference operates down to 2.7V supply voltage while monitoring the battery voltage from 0V to 6V.
The low-power consumption of < 0.75mW typ at 2.7V (reference off), high speed (up to 125kHz clock rate), and on-chip drivers make the ADS7846 an ideal choice for battery-operated systems such as personal digital assistants (PDAs) with resistive touch screens, pagers, cellular phones, and other portable equipment. The ADS7846 is available in the small TSSOP-16, SSOP-16, QFN-16, and VFBGA-48 packages and is specified over the –40°C to +85°C temperature range.
SAME PINOUT AS ADS7843
2.2V TO 5.25V OPERATION
INTERNAL 2.5V REFERENCE
DIRECT BATTERY MEASUREMENT (0V to 6V)
ON-CHIP TEMPERATURE MEASUREMENT
TOUCH-PRESSURE MEASUREMENT
QSPI™/SPI™ 3-WIRE INTERFACE
AUTO POWER-DOWN
TSSOP-16, SSOP-16, QFN-16, AND VFBGA-48 PACKAGES
APPLICATIONS
PERSONAL DIGITAL ASSISTANTS
PORTABLE INSTRUMENTS
POINT-OF-SALES TERMINALS
PAGERS
TOUCH SCREEN MONITORS
CELLULAR PHONES
US Patent No. 6246394
QSPI and SPI are registered trademarks of Motorola.
All trademarks are the property of their respective owners.
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