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AD7879 - Low Voltage Controller

Description

The AD7879/AD7889 are 12-bit successive approximation analog-to-digital converters (SAR ADCs) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens.

a single 1.6 V to 3.6 V supply

Features

  • 4-wire touch screen interface 1.6 V to 3.6 V operation Median and averaging filter to reduce noise Automatic conversion sequencer and timer User-programmable conversion parameters Auxiliary analog input/battery monitor (0.5 V to 5 V) 1 optional GPIO Interrupt outputs (INT, PENIRQ) Touch-pressure measurement Wake-up on touch function Shutdown mode: 6 μA maximum 12-ball, 1.6 mm × 2 mm WLCSP 16-lead, 4 mm × 4 mm LFCSP.

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Full PDF Text Transcription

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Data Sheet Low Voltage Controller for Touch Screens AD7879/AD7889 FEATURES 4-wire touch screen interface 1.6 V to 3.6 V operation Median and averaging filter to reduce noise Automatic conversion sequencer and timer User-programmable conversion parameters Auxiliary analog input/battery monitor (0.5 V to 5 V) 1 optional GPIO Interrupt outputs (INT, PENIRQ) Touch-pressure measurement Wake-up on touch function Shutdown mode: 6 μA maximum 12-ball, 1.
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