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2009•Unpublished venueRequires access

A pseudo rail-to-rail chopper-stabilized instrumentation amplifier in 0.13 µm CMOS

Fuding Ge

Open publisher page 6 citations

Abstract

This paper presents a CMOS chopper-stabilized instrumentation amplifier based on a compact differential difference amplifier (DDA). The DDA itself is based on a high gain and robust two-stage class-AB amplifier. Simulation results show that with chopping frequency at 250 KHz, both the noise density and offset can be reduced by a factor of 10. Detailed practical application considerations of the proposed In-Amp as a current-sensing amplifier in a power management chip are presented.

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What this paper is about

This paper presents a CMOS chopper-stabilized instrumentation amplifier based on a compact differential difference amplifier (DDA). The DDA itself is based on a high gain and robust two-stage class-AB amplifier. Simulation results show that with chopping frequency at 250 KHz, both the noise density and offset can be reduced by a factor of 10. Detailed practical application considerations of the proposed In-Amp as a current-sensing amplifier in a power management chip are presented.

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OpenAlex reports 6 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

This paper presents a CMOS chopper-stabilized instrumentation amplifier based on a compact differential difference amplifier (DDA). The DDA itself is based on a high gain and robust two-stage class-AB amplifier. Simulation results show that with chopping frequency at 250 KHz, both the noise density and offset can be reduced by a factor of 10. Detailed practical application considerations of the proposed In-Amp as a current-sensing amplifier in a power management chip are presented.

Key concepts: Instrumentation amplifier, Chopper, Input offset voltage, Direct-coupled amplifier, CMOS, Electrical engineering, Amplifier, Operational amplifier

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A pseudo rail-to-rail chopper-stabilized instrumentation amplifier in 0.13 µm CMOS — Research Paper | ScholarLens