ZSSC3123

Data Sheet Rev. 1.00/ September 2011 ZSSC3123 cLite™ Capacitive Sensor Signal Conditioner ZSSC3123 cLite™ Capacitive Sensor Signal Conditioner Brief Description The ZSSC3123 cLite™ is a CMOS integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction of capacitive sensor signals. Digital compensation of sensor offset, sensitivity and temperature drift is accomplished via an internal digital signal processor running a correction algorithm with calibration coefficients stored in a non-volatile EEPROM. The ZSSC3123 is configurable for capacitive sensors with capacitances up to 260pF and a sensitivity of 125aF/LSB to 1pF/LSB depending on resolution, speed, and range settings. It is compatible with both single capacitive sensors (both terminals must be accessible) and differential capacitive sensors. Measured and corrected sensor values can be output as I2C™ *, SPI, PDM, or alarms. The I2C™ interface can be used for a simple PCcontrolled cali...