DESCRIPTION

The A8946 is a 4-wire touch screen driver which supports a low-voltage I/O interface from 1.5V to 5.25V.

The A8946 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 A8946 is a highly integrated driver for portable applications with 4-wire resistive touch panel such as, PDA, portable instruments, cellular phone, etc.

The A8946 is available in QFN16 package.

FEATURES

? 1.5V to 5.25V digital I/O

? 2.2V to 5.25V operation

? 4-wire I/F

? Internal 2.5V reference

? Direct battery measurement(0V to 6V)

? Programmable 8 or 12 bit Resolution

? Temperature measurement

? Touch-pressure measurement

? Available in QFN16 Package.

APPLICATION

? Cellular Phones

? Personal Digital Assistants

? Portable Instruments

? Touch Screen Monitors

? Screen Signature Board

? Digital Still Camera