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Low Noise CMOS Chopper Amplifier for MEMS Gas Sensor
Book chapter   Peer reviewed

Low Noise CMOS Chopper Amplifier for MEMS Gas Sensor

Jamel Nebhen, Stéphane Meillère, Mohamed Masmoudi, Jean-Luc Seguin and Khalifa Aguir
Autonomous and Intelligent Systems, pp.366-373
Lecture Notes in Computer Science, Springer Berlin Heidelberg
2011
DOI: https://doi.org/10.1007/978-3-642-21538-4_36

Abstract

analog integrated circuits chopper modulation Gas sensor low-noise low-power
We describe in this paper a low-noise, low-power and low-voltage analog front-end amplifier dedicated to high resistive gas sensor detection. A mobile sensor system for very low level signals such as gas spikes detection is required to implement with a scaled CMOS technology. For a key circuit of these systems, a Chopper Stabilization Amplifier (CHS) which suppresses DC offset and 1/f noise figure of MOS devices is commonly used.

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