An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits

Moaaz Ahmed; Farid Boussaid; Amine Bermak

doi:10.1109/ISCAS.2017.8050330

An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits

Moaaz Ahmed, Farid Boussaid, Amine Bermak

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

4 Citations (Scopus)

Abstract

This paper presents an ultra-low-power low-noise Capacitively-coupled Chopper Instrumentation Amplifier (CCIA). A current-reuse telescopic topology in the first stage along with a recycling folded-cascode topology in the second stage consumes net bias current of 26μ? with enhanced efficiency and achieves an input-referred noise power-spectral-density of 12.77nV/√Hz. The proposed CCIA is chopped at 50kHz to bring the input-referred offset around 6μV and flicker-noise corner around 400mHz. Implemented in chartered 0.18μm CMOS process and designed for Thermoresistive Micro Calorimetric Flow (TMCF) sensors, the reported work achieves an excellent Noise Efficiency Factor (NEF) of 2.5 which is the lowest ever reported NEF for such applications.

Original language	English
Title of host publication	IEEE International Symposium on Circuits and Systems
Subtitle of host publication	From Dreams to Innovation, ISCAS 2017 - Conference Proceedings
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Pages	400-403
Number of pages	4
ISBN (Electronic)	9781467368520
DOIs	https://doi.org/10.1109/ISCAS.2017.8050330
Publication status	Published - 25 Sep 2017
Event	50th IEEE International Symposium on Circuits and Systems, ISCAS 2017 - Baltimore, United States Duration: 28 May 2017 → 31 May 2017

Conference

Conference	50th IEEE International Symposium on Circuits and Systems, ISCAS 2017
Country/Territory	United States
City	Baltimore
Period	28/05/17 → 31/05/17

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10.1109/ISCAS.2017.8050330

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Ahmed, M., Boussaid, F., & Bermak, A. (2017). An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits. In IEEE International Symposium on Circuits and Systems: From Dreams to Innovation, ISCAS 2017 - Conference Proceedings (pp. 400-403). [8050330] IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ISCAS.2017.8050330

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title = "An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits",

abstract = "This paper presents an ultra-low-power low-noise Capacitively-coupled Chopper Instrumentation Amplifier (CCIA). A current-reuse telescopic topology in the first stage along with a recycling folded-cascode topology in the second stage consumes net bias current of 26μ? with enhanced efficiency and achieves an input-referred noise power-spectral-density of 12.77nV/√Hz. The proposed CCIA is chopped at 50kHz to bring the input-referred offset around 6μV and flicker-noise corner around 400mHz. Implemented in chartered 0.18μm CMOS process and designed for Thermoresistive Micro Calorimetric Flow (TMCF) sensors, the reported work achieves an excellent Noise Efficiency Factor (NEF) of 2.5 which is the lowest ever reported NEF for such applications.",

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doi = "10.1109/ISCAS.2017.8050330",

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Ahmed, M, Boussaid, F & Bermak, A 2017, An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits. in IEEE International Symposium on Circuits and Systems: From Dreams to Innovation, ISCAS 2017 - Conference Proceedings., 8050330, IEEE, Institute of Electrical and Electronics Engineers, pp. 400-403, 50th IEEE International Symposium on Circuits and Systems, ISCAS 2017, Baltimore, United States, 28/05/17. https://doi.org/10.1109/ISCAS.2017.8050330

An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits. / Ahmed, Moaaz; Boussaid, Farid; Bermak, Amine.

IEEE International Symposium on Circuits and Systems: From Dreams to Innovation, ISCAS 2017 - Conference Proceedings. IEEE, Institute of Electrical and Electronics Engineers, 2017. p. 400-403 8050330.

Research output: Chapter in Book/Conference paper › Conference paper › peer-review

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Ahmed M, Boussaid F, Bermak A. An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits. In IEEE International Symposium on Circuits and Systems: From Dreams to Innovation, ISCAS 2017 - Conference Proceedings. IEEE, Institute of Electrical and Electronics Engineers. 2017. p. 400-403. 8050330 https://doi.org/10.1109/ISCAS.2017.8050330

An ultra low-power capacitively-coupled chopper instrumentation amplifier for wheatstone-bridge readout circuits

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