A CMOS signal conditioning circuit for piezoresistive pressure sensors

This work presents a signal conditioning circuit for piezoresistive pressure sensors to be used in telemetry systems The architecture of the circuit is based on a voltage-to-time converter and it will be used with an IMEMS. The architecture includes the zero adjustment stage and temperature compensation necessary for piezoresistive pressure sensors and fulfills the requirements of systems implanted inside the human body (small size, high precision, long-term stability and low power consumption).