Analysis of Output Ripple Shape and Amplitude in Chopper Instrumentation Amplifier

Tsz Ngai Lin; Bo Wang; Amine Bermak

doi:10.1109/TCSII.2021.3098225

Analysis of Output Ripple Shape and Amplitude in Chopper Instrumentation Amplifier

Tsz Ngai Lin, Bo Wang^*, Amine Bermak

^*Corresponding author for this work

CSE Information & Computing Technology

Hamad bin Khalifa University

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

In this brief, we analyzed the output ripple in a capacitively-coupled chopper-based instrumentation amplifier (CCIA). Our analysis found that the shape and amplitude of the output ripple of the CCIA are determined by five design parameters, namely amplifier offset, transconductance, chopping frequency, Miller compensation capacitance, and the nulling resistor. With different design specifications, the CCIA ripple appears in four different shapes, including triangular ripple, RC-settling ripple, square ripple, and step-change ripple. These findings are verified by the silicon results. As the cause of each ripple shape varies, this analysis serves as a guideline for designing practical chopper-based amplifiers and their corresponding ripple reduction techniques.

Original language	English
Pages (from-to)	299-303
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	69
Issue number	2
DOIs	https://doi.org/10.1109/TCSII.2021.3098225
Publication status	Published - 1 Feb 2022

Keywords

Choppers (circuits)
Circuits and systems
Estimation
Instruments
Resistors
Shape
Transconductance

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10.1109/TCSII.2021.3098225

Cite this

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abstract = "In this brief, we analyzed the output ripple in a capacitively-coupled chopper-based instrumentation amplifier (CCIA). Our analysis found that the shape and amplitude of the output ripple of the CCIA are determined by five design parameters, namely amplifier offset, transconductance, chopping frequency, Miller compensation capacitance, and the nulling resistor. With different design specifications, the CCIA ripple appears in four different shapes, including triangular ripple, RC-settling ripple, square ripple, and step-change ripple. These findings are verified by the silicon results. As the cause of each ripple shape varies, this analysis serves as a guideline for designing practical chopper-based amplifiers and their corresponding ripple reduction techniques.",

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author = "Lin, {Tsz Ngai} and Bo Wang and Amine Bermak",

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T1 - Analysis of Output Ripple Shape and Amplitude in Chopper Instrumentation Amplifier

AU - Lin, Tsz Ngai

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AU - Bermak, Amine

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N2 - In this brief, we analyzed the output ripple in a capacitively-coupled chopper-based instrumentation amplifier (CCIA). Our analysis found that the shape and amplitude of the output ripple of the CCIA are determined by five design parameters, namely amplifier offset, transconductance, chopping frequency, Miller compensation capacitance, and the nulling resistor. With different design specifications, the CCIA ripple appears in four different shapes, including triangular ripple, RC-settling ripple, square ripple, and step-change ripple. These findings are verified by the silicon results. As the cause of each ripple shape varies, this analysis serves as a guideline for designing practical chopper-based amplifiers and their corresponding ripple reduction techniques.

AB - In this brief, we analyzed the output ripple in a capacitively-coupled chopper-based instrumentation amplifier (CCIA). Our analysis found that the shape and amplitude of the output ripple of the CCIA are determined by five design parameters, namely amplifier offset, transconductance, chopping frequency, Miller compensation capacitance, and the nulling resistor. With different design specifications, the CCIA ripple appears in four different shapes, including triangular ripple, RC-settling ripple, square ripple, and step-change ripple. These findings are verified by the silicon results. As the cause of each ripple shape varies, this analysis serves as a guideline for designing practical chopper-based amplifiers and their corresponding ripple reduction techniques.

KW - Choppers (circuits)

KW - Circuits and systems

KW - Estimation

KW - Instruments

KW - Resistors

KW - Shape

KW - Transconductance

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Analysis of Output Ripple Shape and Amplitude in Chopper Instrumentation Amplifier

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