AD7142 Datasheet (Analog Devices) - Programmable Controller

AD7142, Programmable Controller

The AD7142 and AD7142-1 are integrated capacitance-todigital converters (CDCs) with on-chip environmental calibration for use in systems requiring a novel user input method.

The AD7142 and AD7142-1 can interface to external capacitance sensors implementing functions such as capacitive buttons, scrol

AD7142 Features

* Programmable capacitance-to-digital converter 36 ms update rate (@ maximum sequence length) Better than 1 fF resolution 14 capacitance sensor input channels No external RC tuning components required Automatic conversion sequencer On-chip automatic calibration logic Automatic compensation for environ