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AiT Semiconductor Inc.
www.ait-ic.com
A8946
TOUCH SCREEN DRIVER 4-WIRE RESISTANCE, LOW-VOLTAGE I/O INTERFACE
DESCRIPTION
FEATURES
The A8946 is a 4-wire touch screen driver which supports a low-voltage I/O interface from 1.5V to 5.25V.
1.5V to 5.25V digital I/O 2.2V to 5.25V operation
The A8946 has an on-chip 2.5V reference that can
4-wire I/F
be used for the auxiliary input, battery monitor, and
Internal 2.5V reference
temperature measurement modes. The reference can also be powered down when not used to
Direct battery measurement(0V to 6V)
conserve power. The internal reference operates
Programmable 8 or 12 bit Resolution
down to 2.7V supply voltage, while monitoring the battery voltage from 0V to 6V.