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Open AccessJournal ArticleDOI

A Micropower CMOS-Instrumentation Amplifier

M. Degrauwe, +2 more
- 01 Jan 1985 - 
- Vol. 20, Iss: 3, pp 805-807
TLDR
In this paper, a CMOS switched capacitor instrumentation amplifier is presented, where offset is reduced by an auto-zero technique and effects due to charge injection are attenuated by a special amplifier configuration.
Abstract: 
A CMOS switched capacitor instrumentation amplifier is presented. Offset is reduced by an auto-zero technique and effects due to charge injection are attenuated by a special amplifier configuration. The circuit which is realized in a 4-/spl mu/m double poly process has an offset (/spl tau/) of 370 /spl mu/V, an rms input referred integrated noise (0.5 -f/sub c//2) of 79 /spl mu/V, and consumes only 21 /spl mu/W (f/sub c/ = 8 kHz, V/sub DD/ = 3 V).

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Citations
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Journal ArticleDOI

Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization

Christian Enz, +1 more
TL;DR: In this paper, some old and new circuit techniques are described for the compensation of the amplifier's most important nonideal effects including the noise (mainly thermal and 1/f noise), the input-referred dc offset voltage as well as the finite gain.
Journal ArticleDOI

A low-power low-noise CMOS amplifier for neural recording applications

R.R. Harrison, +1 more
- 05 Jun 2003 - 
TL;DR: In this article, a low-noise low-power biosignal amplifiers capable of amplifying signals in the millihertz-to-kilohertz range while rejecting large dc offsets generated at the electrode-tissue interface is presented.
Journal ArticleDOI

A micropower low-noise monolithic instrumentation amplifier for medical purposes

Michiel Steyaert, +1 more
- 01 Dec 1987 - 
TL;DR: A CMOS low-power low-noise monolithic instrumentation amplifier is described and it can produce variable gains of 14/20/26/40 dB, which are set by control software.
Journal ArticleDOI

A three-axis micromachined accelerometer with a CMOS position-sense interface and digital offset-trim electronics

M. Lemkin, +1 more
- 01 Apr 1999 - 
TL;DR: In this paper, the authors describe a three-axis accelerometer implemented in a surface-micromachining technology with integrated CMOS, which measures changes in a capacitive half-bridge to detect deflections of a proof mass, which result from acceleration input.
Proceedings ArticleDOI

A low-power, low-noise CMOS amplifier for neural recording applications

Reid R. Harrison
TL;DR: A novel bioamplifier that uses a MOS-bipolar pseudo-resistor to amplify signals down to the mHz range while rejecting large dc offsets and it is demonstrated that the VLSI implementation approaches the theoretical noise-power tradeoff limit.
References
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Journal ArticleDOI

A MOS switched-capacitor instrumentation amplifier

R.C. Yen, +1 more
- 01 Dec 1982 - 
TL;DR: In this article, a precision switched-capacitor sampled-data instrumentation amplifier using NMOS polysilicon gate technology is described, which is intended for use as a sample and hold amplifier for low level signals in data acquisition systems.
Proceedings ArticleDOI

Low-level MOS transistor amplifier using storage techniques

R. Poujois, +3 more
TL;DR: A fully integrated analog amplifier which can be used in a variety of applications either as a single element or as a cell in a LSI circuit has been developed for such applications as temperature measurements associated with thermocouples, biomedicine, low-level measurements and A/D converters.
Journal ArticleDOI

Micropower high-performance SC building block for integrated low-level signal processing

P.M. Van Peteghem, +2 more
- 01 Jan 1985 - 
TL;DR: A switched-capacitor instrumentation amplifier which uses correlated-double sampling to reduce the amplifier offset and additional offset caused by clock-related charge injection is cancelled by a symmetrical differential circuit topology and a three-phase clocking scheme.