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AD7889 Datasheet Low Voltage Controller

Manufacturer: Analog Devices

Download the AD7889 datasheet PDF. This datasheet also includes the AD7879 variant, as both parts are published together in a single manufacturer document.

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Note: The manufacturer provides a single datasheet file (AD7879-AnalogDevices.pdf) that lists specifications for multiple related part numbers.

General 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.

The AD7879/AD7889 work with a very low power supply—a single 1.6 V to 3.6 V supply—and

Overview

Data Sheet Low Voltage Controller for Touch Screens AD7879/AD7889.

Key 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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