An Energy-Efficient 3.7-nV/√ Hz Bridge-Readout IC with a Stable Bridge Offset Compensation Scheme

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24 Citations (Scopus)

Abstract

Wheatstone bridge sensors are often used in precision instrumentation and measurement systems, e.g., for μK-resolution temperature sensing in wafer steppers [1] and mPa-resolution differential pressure sensing in precision air gauges [2]. Since they output small differential signals superimposed on a large common-mode (CM) voltage, typical bridge readout ICs (ROICs) consist of an instrumentation amplifier (IA) followed by an ADC [1]. This paper describes a low-noise energy-efficient ROIC, which achieves a 3.7nV/√Hz input-referred noise PSD and a power efficiency factor (PEF) of 44.1. The latter represents a 5× improvement on the state of the art [3].

Original languageEnglish
Title of host publication2017 IEEE International Solid-State Circuits Conference, ISSCC 2017
Subtitle of host publicationDigest of Technical Papers
EditorsLaura C. Fujino
Place of PublicationDanvers, MA
PublisherIEEE
Pages172-173
Number of pages2
Volume60
ISBN (Electronic)978-1-5090-3758-2
ISBN (Print)978-1-5090-3757-5
DOIs
Publication statusPublished - 2017
EventISSCC 2017: 64th IEEE International Solid-State Circuits Conference - San Francisco, CA, United States
Duration: 5 Feb 20179 Feb 2017

Conference

ConferenceISSCC 2017
CountryUnited States
CitySan Francisco, CA
Period5/02/179/02/17

Keywords

  • Bridge circuits
  • Energy efficiency
  • Choppers (circuits)
  • Sensors
  • Impedance
  • Logic gates
  • Modulation

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    Jiang, H., Makinwa, K. A. A., & Nihtianov, S. (2017). An Energy-Efficient 3.7-nV/√ Hz Bridge-Readout IC with a Stable Bridge Offset Compensation Scheme. In L. C. Fujino (Ed.), 2017 IEEE International Solid-State Circuits Conference, ISSCC 2017: Digest of Technical Papers (Vol. 60, pp. 172-173). [7870316] IEEE. https://doi.org/10.1109/ISSCC.2017.7870316