Title :
A CMOS interface for resistive bridge transducers
Author :
López-Martín, Antonio J. ; Zuza, Mikel ; Carlosena, Alfonso
Author_Institution :
Dept. of Electr. & Electron. Eng, Public Univ. of Navarra, Pamplona, Spain
Abstract :
A low-cost CMOS interface circuit for resistive bridge transducers is fully designed and implemented. It provides amplification as well as temperature, gain and offset compensation in the analog domain, and linearization and PWM conversion in the digital domain. An experimental prototype interfaces a magnetoresistive bridge as a particular example, thus demonstrating the validity of the proposed approach
Keywords :
CMOS integrated circuits; amplification; analogue-digital conversion; bridge instruments; compensation; linearisation techniques; magnetoresistive devices; mixed analogue-digital integrated circuits; pulse width modulation; readout electronics; transducers; 2 micron; 8 bit; A/D converter; ASIC; PWM conversion; amplification; gain compensation; linearization; low-cost CMOS interface circuit; magnetoresistive bridge; offset compensation; piece-wise linear ADC; resistive bridge transducers; temperature compensation; Bridge circuits; Capacitive sensors; Giant magnetoresistance; Instruments; Magnetic sensors; Pulse width modulation; Thermal resistance; Thermal sensors; Transducers; Voltage;
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.2002.1010947
