AD7879 Datasheet (Analog Devices) - Low Voltage Controller

AD7879, Low Voltage Controller

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 <

AD7879 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 mea