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Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization
Open accessAbstract
In linear IC's fabricated in a low-voltage CMOS technology, the reduction of the dynamic range due to the dc offset and low frequency noise of the amplifiers becomes increasingly significant. Also, the achievable amplifier gain is often quite low in such a technology, since cascoding may not be a practical circuit option due to the resulting reduction of the output signal swing. In this paper, some old and some 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 resulting in a nonideal virtual ground at the input.
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Cited by
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Chandrakumar, H., & Markovic, D. (2017) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.2016.2645611 · Cited by 237
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Energy Efficient Low-Noise Neural Recording Amplifier With Enhanced Noise Efficiency Factor
Majidzadeh, V., Schmid, A., & Leblebici, Y. (2011) · IEEE Transactions on Biomedical Circuits and Systems · doi:10.1109/tbcas.2010.2078815 · Cited by 165
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Metadata
- Authors
- Enz, C. C., & Temes, G. C.
- Venue
- Proceedings of the IEEE
- Published
- 1996
- Volume
- 84
- Issue
- 11
- Pages
- 1584-1614
- ISSN
- 0018-9219 (ISSN-L)
- OpenAlex
- W2112611349
- Cited by
- 1,877
- References
- 0
- FWCI
- 8.93
- Type
- journal article
- Language
- en
- Open access
- green
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- Enz, C. C., & Temes, G. C. (1996). Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization. Proceedings of the IEEE. https://doi.org/10.1109/5.542410
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