ADI AD7879ACPZ-500R7

4-х проводной резистивный12 bSPI1,6 В ~ 3,6 В-40°C ~ 85°C (TA)

Overview

The AD7879ACPZ-500R7 is a 12-bit successive approximation Analog-to-digital Converter (ADC) with a synchronous serial interface and low on-resistance switches for driving 4-wire resistive touch screens. The device includes a shutdown mode that reduces current consumption to less than 6µA. To reduce the effects of noise from LCDs and other sources, the converter contains a preprocessing block. The preprocessing function consists of a median filter and an averaging filter. The combination of these two filters provides a more robust solution, discarding the spurious noise in the signal and keeping only the data of interest. The size of both filters is programmable. Other user-programmable conversion controls include variable acquisition time and first conversion delay, up to 16 averages can be taken per conversion. The converter can run in slave mode or standalone mode, using an automatic conversion sequencer and timer.

Features