Abstract:
This paper presents the principle and design of an SOI-CMOS low noise chopper amplifier for electronic data acquisition system in down-hole-drilling application that oper...Show MoreMetadata
Abstract:
This paper presents the principle and design of an SOI-CMOS low noise chopper amplifier for electronic data acquisition system in down-hole-drilling application that operates at the high temperature (>170 °C) regime. The chopper amplifier is designed to have three-stages where the first stage is a folded cascade. A commercially available 1-μm SOI-CMOS technology was chosen. Simulations showed that the input-referred noise of the chopper amplifier is about 25.6 nV/sqrt(Hz) at 700 Hz with a total current consumption of 5.496 mA. Measurements proved that the chopper amplifier is able to work up to 300 °C.
Date of Conference: 10-12 December 2014
Date Added to IEEE Xplore: 05 February 2015
Electronic ISBN:978-1-4799-4833-8
Print ISSN: 2325-0631
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