Digital signal processing

Pressure sensors with digital signal conditioning electronically correct the sensor signal and compensate for all error sources such as offset, span, temperature effects, non-linearity and hysteresis all at the same time.

The analog mV pressure signal and the corresponding temperature information from the measuring bridge are amplified and digitally converted. A microcontroller calculates the corrected pressure value using a special mathematical algorithm and sensor specific compensation coefficient which have been stored in the microcontroller memory. These exact coefficients have been determined by the temperature and pressure cycling of each device during production. The final sensor signal is available via a digital bus interface (e.g. I²C, SPI) and as an analog voltage output signal.