Title :
A CMOS signal conditioning circuit for piezoresistive pressure sensors
Author :
Ramirez, Jorge ; Charry, Edgar
Author_Institution :
Laboratorio de Sistemas Integraveis, Sao Paulo Univ., Brazil
Abstract :
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)
Keywords :
CMOS analogue integrated circuits; analogue processing circuits; biomedical electronics; biomedical telemetry; biomedical transducers; compensation; convertors; piezoresistive devices; pressure sensors; prosthetics; signal processing equipment; CMOS signal conditioning circuit; IMEMS; circuit architecture; high precision; human body implantation; long-term stability; low power consumption; piezoresistive pressure sensors; small size; telemetry systems; temperature compensation; voltage-to-time converter; zero adjustment stage; Bridge circuits; Energy consumption; Inverters; Piezoresistance; Pressure measurement; Sensor phenomena and characterization; Sensor systems; Temperature sensors; Voltage; Wireless sensor networks;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Conference_Location :
Phoenix-Scottsdale, AZ
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1011422
