Feedback controlled pseudo resistor

Zhijun Zhou; Paul A Warr

doi:10.1049/el.2019.3779

Feedback controlled pseudo resistor

Zhijun Zhou^*, Paul A Warr

^*Corresponding author for this work

Research output: Contribution to journal › Letter (Academic Journal) › peer-review

4 Citations (Scopus)

Abstract

The pseudo resistor (PR) is widely used in integrated circuits. It comprises two transistors back‐to‐back to force them into the sub‐threshold region, which provides large resistance with a small die area. However, its linearity is limited by the non‐linear MOS transistors in weak inversion. In this Letter, a new PR topology is proposed, employing a feedback loop that continuously adjusts the voltage at the shared gate node of the PR with the input signal. The proposed architecture substantially increases the linearity and impedance of the PR.

Original language	English
Pages (from-to)	371-373
Number of pages	3
Journal	Electronics Letters
Volume	56
Issue number	8
DOIs	https://doi.org/10.1049/el.2019.3779
Publication status	Published - 1 Apr 2020

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© The Institution of Engineering and Technology 2020.

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title = "Feedback controlled pseudo resistor",

abstract = "The pseudo resistor (PR) is widely used in integrated circuits. It comprises two transistors back‐to‐back to force them into the sub‐threshold region, which provides large resistance with a small die area. However, its linearity is limited by the non‐linear MOS transistors in weak inversion. In this Letter, a new PR topology is proposed, employing a feedback loop that continuously adjusts the voltage at the shared gate node of the PR with the input signal. The proposed architecture substantially increases the linearity and impedance of the PR.",

author = "Zhijun Zhou and Warr, \{Paul A\}",

note = "Publisher Copyright: {\textcopyright} The Institution of Engineering and Technology 2020.",

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T1 - Feedback controlled pseudo resistor

AU - Zhou, Zhijun

AU - Warr, Paul A

PY - 2020/4/1

Y1 - 2020/4/1

N2 - The pseudo resistor (PR) is widely used in integrated circuits. It comprises two transistors back‐to‐back to force them into the sub‐threshold region, which provides large resistance with a small die area. However, its linearity is limited by the non‐linear MOS transistors in weak inversion. In this Letter, a new PR topology is proposed, employing a feedback loop that continuously adjusts the voltage at the shared gate node of the PR with the input signal. The proposed architecture substantially increases the linearity and impedance of the PR.

AB - The pseudo resistor (PR) is widely used in integrated circuits. It comprises two transistors back‐to‐back to force them into the sub‐threshold region, which provides large resistance with a small die area. However, its linearity is limited by the non‐linear MOS transistors in weak inversion. In this Letter, a new PR topology is proposed, employing a feedback loop that continuously adjusts the voltage at the shared gate node of the PR with the input signal. The proposed architecture substantially increases the linearity and impedance of the PR.

U2 - 10.1049/el.2019.3779

DO - 10.1049/el.2019.3779

M3 - Letter (Academic Journal)

SN - 0013-5194

VL - 56

SP - 371

EP - 373

JO - Electronics Letters

JF - Electronics Letters

IS - 8

ER -

Feedback controlled pseudo resistor

Abstract

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