The Design of a Fully Differential Capacitive Pressure Sensor with Unbalanced Parasitic Input Capacitances in 130nm CMOS Technology

B. T. Bradford, W. Krautschneider, D. Schroeder

2013

Abstract

A switched capacitor amplifier for measuring absolute pressure with a micro-machined capacitive pressure sensor using correlated double sampling has been designed in 130nm CMOS technology. The switched capacitor amplifier design uses a combination of correlated double sampling, input offset cancellation, and output offset cancellation to help reject 1f noise and DC offset mismatch. A method for sizing the operational transconductance amplifier (OTA) components according to the system noise, accuracy, and bandwidth requirements is presented.

References

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Paper Citation


in Harvard Style

T. Bradford B., Krautschneider W. and Schroeder D. (2013). The Design of a Fully Differential Capacitive Pressure Sensor with Unbalanced Parasitic Input Capacitances in 130nm CMOS Technology . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013) ISBN 978-989-8565-34-1, pages 137-142. DOI: 10.5220/0004237801370142


in Bibtex Style

@conference{biodevices13,
author={B. T. Bradford and W. Krautschneider and D. Schroeder},
title={The Design of a Fully Differential Capacitive Pressure Sensor with Unbalanced Parasitic Input Capacitances in 130nm CMOS Technology},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013)},
year={2013},
pages={137-142},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0004237801370142},
isbn={978-989-8565-34-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2013)
TI - The Design of a Fully Differential Capacitive Pressure Sensor with Unbalanced Parasitic Input Capacitances in 130nm CMOS Technology
SN - 978-989-8565-34-1
AU - T. Bradford B.
AU - Krautschneider W.
AU - Schroeder D.
PY - 2013
SP - 137
EP - 142
DO - 10.5220/0004237801370142