AD7142
FEATURES
Programmable capacitance-to-digital converter 36 ms update rate (@ maximum sequence length) Better than 1 f F resolution 14 capacitance sensor input channels No external RC tuning ponents required Automatic conversion sequencer
On-chip automatic calibration logic Automatic pensation for environmental changes Automatic adaptive threshold and sensitivity levels
On-chip RAM to store calibration data SPI®-patible serial interface (AD7142) I2C®-patible 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 m A Low power mode: 50 μA
APPLICATIONS
Personal music and multimedia players Cell phones Digital still cameras Smart hand-held devices Television, A/V, and remote controls Gaming consoles
GENERAL DESCRIPTION
The AD7142 and AD7142-1 are integrated capacitance-todigital converters (CDCs) with on-chip environmental calibration for...
