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A CMOS chopper amplifier
Open accessAbstract
A highly sensitive CMOS chopper amplifier for low-frequency applications is described. It is realized with a second-order low-pass selective amplifier using a continuous-time filtering technique. The circuit has been integrated in a 3-/spl mu/m p-well CMOS technology. The chopper amplifier DC grain is 38 dB with a 200-Hz bandwidth. The equivalent input noise is 63 nV//spl radic/Hz and free from 1/f noise. The input offset is below 5 /spl mu/V for a tuning error less than 1%. The amplifier consumes only 34 /spl mu/W.
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Citations
Cited by
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Kinget, P. R. (2005) · IEEE Journal of Solid-State Circuits · doi:10.1109/jssc.2005.848021 · Cited by 478
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Metadata
- Authors
- Enz, C. C., Vittoz, E. A., & Krummenacher, F.
- Venue
- IEEE Journal of Solid-State Circuits
- Published
- 1987-06
- Volume
- 22
- Issue
- 3
- Pages
- 335-342
- ISSN
- 0018-9200 (ISSN-L)
- OpenAlex
- W2160489724
- Cited by
- 241
- References
- 0
- FWCI
- 0.93
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: A CMOS chopper amplifier. https://app.cochat.ai/papers/10.1109/jssc.1987.1052730
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- Enz, C. C., Vittoz, E. A., & Krummenacher, F. (1987). A CMOS chopper amplifier. IEEE Journal of Solid-State Circuits. https://doi.org/10.1109/jssc.1987.1052730
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