Floating gate common mode feedback circuit for low noise amplifiers

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Publication Type Journal Article
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Harrison, Reid R.; Charles, Cameron Townley
Title Floating gate common mode feedback circuit for low noise amplifiers
Date 2003-01-01
Description Most low noise amplifier designs focus on eliminating sources of noise that are intrinsic 1.0 the amplifier (thermal noise, Ilfnoise). As integrated (circuit design moves increasingly towards mixed signal implementations, the design of low-noise malog amplifiers must be re-evaluated to consider the switching noise generated by on-chip digital circuitry. We designed three fully differential versions of a previously reported single-ended low-noise amplifier for biomedical applications. Each design uses a different common mode feedback (CMFB) circuit. The first uses a standard continuous-time CMFB circuit, the second uSes a switched capacitor CMFB circuit, and the third uses a novel floating gate CMFB circuit. A test chip he3 been fabricated in a 1.5 pm CMOS process. Tha fully differential amplifiers outperform the single-ended amplifier in the presence of switching noise. The amplifier with the floating gate CMFB circuit has the lowest total harmonic distortion over the critical range and exhibits the smallest fluctuation in the common mode output level.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Journal Title IEEE Southwest Symposium on Mixed-Signal Design
First Page 180
Last Page 185
Subject Floating gate; Common mode feedback circuit; Low noise amplifiers
Subject LCSH Integrated circuits; Metal oxide semiconductors; Microelectrodes
Language eng
Bibliographic Citation Charles, C., & Harrison, R. R. (2003). Floating gate common mode feedback circuit for low noise amplifiers. of the 2003 IEEE Southwest Symposium on Mixed-Signal Design (SSMSD 2003), 180-5.
Rights Management (c) 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 408,449 bytes
Identifier ir-main,13997
ARK ark:/87278/s6fb5mbt
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 704881
Reference URL https://collections.lib.utah.edu/ark:/87278/s6fb5mbt