论文信息 - An Integrated Magnetic Sensor with Two Continuous-Time /spl Delta//spl Sigma/-Converters and Stress Compensation Capability

An Integrated Magnetic Sensor with Two Continuous-Time /spl Delta//spl Sigma/-Converters and Stress Compensation Capability

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

B. Schaffer | M. Motz | W. Scherr | Udo Ausserlechner

[1] Ausserlechner Udo,et al. Drift of magnetic sensitivity of smart Hall sensors due to moisture absorbed by the IC-package , 2004 .

[2] G. Meijer,et al. Minimization of the mechanical-stress-induced inaccuracy in bandgap voltage references , 2003, IEEE J. Solid State Circuits.

[3] Johan H. Huijsing,et al. A 1.8-V /spl Delta//spl Sigma/ modulator interface for an electret microphone with on-chip reference , 2001 .

[4] M. Motz,et al. Drift of magnetic sensitivity of smart Hall sensors due to moisture absorbed by the IC-package [automotive applications] , 2004, Proceedings of IEEE Sensors, 2004..