Proceedings ArticleDOI
Design of a CMOS readout circuit for wide-temperature range capacitive MEMS sensors
Yucai Wang,Vamsy P. Chodavarapu +1 more
- pp 738-742
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TLDR
The proposed capacitance readout interface circuit uses a sigma-delta technique to convert capacitance ratio into a digital output and is suitable to provide a high-accuracy digitized output for capacitive MEMS sensors.Abstract:
We present a capacitance readout interface circuit in bulk CMOS process which is functional at wide temperature range between -55oC to 175oC. The proposed circuit uses a sigma-delta technique to convert capacitance ratio into a digital output and is suitable to provide a high-accuracy digitized output for capacitive MEMS sensors. The circuit is implemented using IBM 0.13μm CMOS technology. Simulation results show that the circuit has excellent stability over wide temperature range, as high as 0.1% accuracy between -55oC to 175oC.read more
Citations
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Journal ArticleDOI
Design of a high precision digital interface circuit for capacitive MEMS accelerometers with floating point ADC
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Book ChapterDOI
Integrated MEMS Capacitive Pressure Sensor with On-Chip CDC for a Wide Operating Temperature Range
TL;DR: In this article, the authors presented a new model of capacitive pressure sensor along with a complementary metaloxide-semiconductor (CMOS) along with the stress-strain characterization of poly-SiGe is used to develop and model the structure of the sensor's diaphragm element.
Proceedings ArticleDOI
Design of a sigma-delta modulator in standard CMOS process for wide-temperature applications
Yucai Wang,Vamsy P. Chodavarapu +1 more
TL;DR: A delta-sigma modulator in a standard CMOS process that is designed to operate over a wide temperature range from -55 oC to 225 oC and applies constant-gm biasing technique and other design considerations to compensate performance degradation over temperature variation.
Journal ArticleDOI
Low Temperature Sensitivity CMOS Transconductor Based on GZTC MOSFET Condition
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Proceedings ArticleDOI
A 0.7V fully differential first order GZTC-C filter
TL;DR: A 0.7 V supply voltage fully differential first order GZTC-C filter is herein proposed as a Transconductance-Capacitor filter in which its gm stage is biased exactly on transconductance zero-temperature (GZTC) bias condition.
References
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