Next Article in Journal
Research on Improving Optical Field Distribution of TOSA Based on 3D Defocusing Coupling
Previous Article in Journal
Risk Coupling Analysis of Deep Foundation Pits Adjacent to Existing Underpass Tunnels Based on Dynamic Bayesian Network and N–K Model
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Applied Sciences
Volume 12
Issue 20
10.3390/app122010471
applsci-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Communication

Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique

by
Gyuri Choi
,
Kyeongsik Nam
,
Mookyoung Yoo
,
Sanggyun Kang
,
Byeongkwan Jin
,
Kyounghwan Kim
,
Hyeoktae Son
and
Hyoungho Ko
*
Department of Electronics Engineering, Chungnam National University, Daejeon 34134, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2022, 12(20), 10471; https://doi.org/10.3390/app122010471
Submission received: 13 September 2022 / Revised: 14 October 2022 / Accepted: 15 October 2022 / Published: 17 October 2022
(This article belongs to the Section Electrical, Electronics and Communications Engineering)
Browse Figures
Review Reports Versions Notes

Abstract

In this study, we describe a dual-chopper glitch-reduction current-feedback instrumentation amplifier (CFIA) with a ripple reduction loop. The amplifier employs the chopping technique to reduce low-frequency noise, such as 1/f noise. A glitch caused by chopping occurs at each chopper clock edge and results in intermodulation distortion (IMD). Owing to the input offset, the chopping technique also produces ripples. In this study, the glitch-induced IMD was reduced using a fill-in technique whereby only neat signals were alternately used as outputs by avoiding the glitch section with dual-chopping channel CFIA. To avoid using a high-order, low-frequency filter, a ripple reduction loop was implemented to reduce the ripple generated by chopping. The CFIA is based on a low-noise chopper fully differential difference amplifier with a cascode stage and a Monticelli-class AB output stage, which can drive a larger load and increase power efficiency. The proposed dual-chopper CFIA was fabricated using a 0.18 µm CMOS standard process, and its current consumption with a 1.8-V power supply is 29.5 μA. The proposed CFIA has a gain of 51 V/V, input referred noise of 53.3 nV/√Hz at 1 Hz, and a noise efficiency factor of 4.48.
Keywords: chopping; fill-in technique; chopper glitch reduction; ripple reduction loop; class AB output chopping; fill-in technique; chopper glitch reduction; ripple reduction loop; class AB output

Share and Cite

MDPI and ACS Style

Choi, G.; Nam, K.; Yoo, M.; Kang, S.; Jin, B.; Kim, K.; Son, H.; Ko, H. Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique. Appl. Sci. 2022, 12, 10471. https://doi.org/10.3390/app122010471

AMA Style

Choi G, Nam K, Yoo M, Kang S, Jin B, Kim K, Son H, Ko H. Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique. Applied Sciences. 2022; 12(20):10471. https://doi.org/10.3390/app122010471

Chicago/Turabian Style

Choi, Gyuri, Kyeongsik Nam, Mookyoung Yoo, Sanggyun Kang, Byeongkwan Jin, Kyounghwan Kim, Hyeoktae Son, and Hyoungho Ko. 2022. "Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique" Applied Sciences 12, no. 20: 10471. https://doi.org/10.3390/app122010471

APA Style

Choi, G., Nam, K., Yoo, M., Kang, S., Jin, B., Kim, K., Son, H., & Ko, H. (2022). Current-Feedback Instrumentation Amplifier Using Dual-Chopper Fill-In Technique. Applied Sciences, 12(20), 10471. https://doi.org/10.3390/app122010471

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop