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 environmental changes Automatic adaptive threshold and sensitivity levels On-chip RAM to store calibration data SPI®-compatible serial interface (AD7142) I2C®-compatible serial interface (AD7142-1) Separate VDRIVE level for serial interface Interrupt output and GPIO 32-lead, 5 mm x 5 mm LFCSP_VQ 2.
6 V to 3.
6 V supply voltage Low operating current Full power mode: less than 1 mA Low power mode: 5...

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