Click to expand full text
Capacitive Sensor Signal Conditioner IC
ZSSC3230
Datasheet
Description
The ZSSC3230 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 nonvolatile, multiple-time programmable (NVM) memory. Programming the ZSSC3230 is simple via the serial interface. The interface is used for the PCcontrolled calibration procedure, which programs the set of calibration coefficients in memory.