Title :
A current-mode interface circuit for a piezoresistive pressure sensor
Author :
Samitier, Josep ; Puig-Vidal, Manel ; Bota, Sebastian A. ; Rubio, Carles ; Siskos, Stilianos K. ; Laopoulos, Theordore
Author_Institution :
Fac. de Fisica, Barcelona Univ., Spain
fDate :
6/1/1998 12:00:00 AM
Abstract :
An interfacing circuit for piezoresistive pressure sensors based on CMOS current conveyors is presented. The main advantages of the proposed interfacing circuit include the use of a single piezoresistor, the capability of offset compensation, and a versatile current-mode configuration, with current output and current or voltage input. Experimental tests confirm linear relation of output voltage versus piezoresistance variation
Keywords :
CMOS analogue integrated circuits; current conveyors; current-mode circuits; error compensation; multiport networks; piezoresistive devices; pressure sensors; CMOS current conveyors; current input; current output; current-mode interface circuit; linear relation; offset compensation; piezoresistance variation; piezoresistive pressure sensor; single piezoresistor; three-port analog building block; versatile current-mode configuration; voltage input; Biosensors; Bridge circuits; CMOS technology; Immune system; Laboratories; Piezoresistance; Resistors; Sensor phenomena and characterization; Silicon; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
