Temperature effect and compensation scheme for tunable ultra-high-resistance pseudo resistor

Ahmed Reda Mohamed, Guoxing Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Pseudo resistors with ultra-high resistance implemented using MOSFETS are employed in a wide range of biomedical applications. However, their resistances are highly dependent on temperature. A gate-voltage-controlled pseudo resistor is proposed to compensate the temperature impact through trimming. Simplified models have been proposed for analyzing the pseudo resistor, and a linear trimming scheme is proposed. The proposed tunable pseudo resistor is fabricated and measured in standard 0.35 μm CMOS technology. Experimental results demonstrated that tuning could adequately compensate the temperature-induced resistance variation by 8.75x and provide relatively low-temperature dependence.

Original languageEnglish
Article number104820
JournalMicroelectronics Journal
Volume102
DOIs
StatePublished - Aug 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

  • Chip fabrication and measurement
  • Integrated circuit
  • Temperature compensation scheme
  • Tunable pseudo-resistor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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