A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors

Shiwei Wang, Thomas Jacob Koickal, A. Hamilton, E. Mastropaolo, Latif Rhonira, R. Cheung, M. Newton, L. Smith

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper proposes a low-noise MEMS interface circuit which has very small parasitic capacitance at the input node. The circuit presented is suitable for the MEMS cochlea-mimicking acoustic sensors which are highly parasitic-sensitive due to their low intrinsic sensing capacitance. In order to reduce the electronic noise of the interface circuit, chopper stabilization technique is implemented, and an effective method to optimize the critical transistor size for best noise performance is derived. Simulation results show that, for a MEMS sensing structure with 200 fF static capacitance, the interface circuit achieves a 0.72 aF equivalent capacitance noise floor over 100 Hz to 20 kHz audio bandwidth.

Original languageEnglish
Title of host publicationISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems
Pages1151-1154
Number of pages4
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
Duration: 20 May 201223 May 2012

Other

Other2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
CountryKorea, Republic of
CitySeoul
Period20/5/1223/5/12

Fingerprint

Acoustic noise
MEMS
Capacitance
Acoustics
Networks (circuits)
Sensors
Transistors
Stabilization
Bandwidth

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Wang, S., Koickal, T. J., Hamilton, A., Mastropaolo, E., Rhonira, L., Cheung, R., ... Smith, L. (2012). A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors. In ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems (pp. 1151-1154). [6271436] https://doi.org/10.1109/ISCAS.2012.6271436

A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors. / Wang, Shiwei; Koickal, Thomas Jacob; Hamilton, A.; Mastropaolo, E.; Rhonira, Latif; Cheung, R.; Newton, M.; Smith, L.

ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. 2012. p. 1151-1154 6271436.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, S, Koickal, TJ, Hamilton, A, Mastropaolo, E, Rhonira, L, Cheung, R, Newton, M & Smith, L 2012, A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors. in ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems., 6271436, pp. 1151-1154, 2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012, Seoul, Korea, Republic of, 20/5/12. https://doi.org/10.1109/ISCAS.2012.6271436
Wang S, Koickal TJ, Hamilton A, Mastropaolo E, Rhonira L, Cheung R et al. A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors. In ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. 2012. p. 1151-1154. 6271436 https://doi.org/10.1109/ISCAS.2012.6271436
Wang, Shiwei ; Koickal, Thomas Jacob ; Hamilton, A. ; Mastropaolo, E. ; Rhonira, Latif ; Cheung, R. ; Newton, M. ; Smith, L. / A low-noise interface circuit for MEMS cochlea-mimicking acoustic sensors. ISCAS 2012 - 2012 IEEE International Symposium on Circuits and Systems. 2012. pp. 1151-1154
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