Title :
An Integrated Magnetic Sensor with Two Continuous-Time /spl Delta//spl Sigma/-Converters and Stress Compensation Capability
Author :
Motz, Markus ; Udo Ausserlechner ; Scherr, W. ; Schaffer, B.
Author_Institution :
Infineon, Villach
Abstract :
A linear 4kHz Hall sensor in 0.6mum BiCMOS has digital 3rd-order temperature compensation, a DR of 90dB and an offset of 50muT. It uses a chopped 3rd-order multibit CT-DeltaSigma ADC including an up/down counter loop and bandgap-based compensation for stability and accuracy. Digital compensation of sensitivity drift caused by package-induced stress is provided
Keywords :
BiCMOS integrated circuits; analogue-digital conversion; compensation; continuous time systems; delta-sigma modulation; magnetic sensors; 0.6 micron; 4 kHz; 50 muT; BiCMOS; Hall sensor; bandgap-based compensation; continuous-time converters; delta-sigma converters; digital compensation; magnetic sensor; package-induced stress; stress compensation; third-order temperature compensation; up/down counter loop; Capacitors; Feedback; Frequency; Magnetic sensors; Magnetic separation; Oscillators; Resistors; Stability; Stress; Transconductance;
Conference_Titel :
Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0079-1
DOI :
10.1109/ISSCC.2006.1696160
