Title :
Magnetic field sensitive amplifier with temperature compensation
Author :
Ryan, J. ; Doyle, J. ; Buckley, M. ; Flynn, M.
Author_Institution :
Nat. Microelectron. Res. Center, Univ. Coll., Cork, Ireland
Abstract :
Reports on the use of the split-drain device in an operational amplifier configuration where the amplifier input offset voltage is modulated linearly by the incident magnetic field. The sensitivity can be adjusted by changing the closed-loop gain. With reasonable gains (10) and 50- mu A bias currents, equivalent sensitivities of 16 kV/AT are obtained.<>
Keywords :
electric sensing devices; magnetic field measurement; operational amplifiers; 50 muA; amplifier input offset voltage; bias currents; closed-loop gain; equivalent sensitivities; incident magnetic field; operational amplifier configuration; split-drain device; CMOS technology; Circuits; Magnetic field measurement; Magnetic fields; Magnetic sensors; Operational amplifiers; Signal processing; Temperature sensors; Transconductance; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1992. Digest of Technical Papers. 39th ISSCC, 1992 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0573-6
DOI :
10.1109/ISSCC.1992.200443
