Low-voltage variable gain current amplifier for high-voltage signal processing

Retdian Nicodimus, Jieting Zhang, Takahide Sato, Shigetaka Takagi

Research output: Contribution to journalArticle

Abstract

In low power-supply voltage systems, the method converting the input voltage signals into current signals by a resistor is useful in case that the amplitude of input voltage signals is larger than the supply voltage. This paper proposes a variable gain current amplifier as a current mode processing interface. The proposed circuit uses MOSFETs operated in the triode region to obtain a controllable current gain. High linearity is achieved by fixing the drain-to-source voltage of the MOSFETs. The proposed circuit is simulated by HSpice to confirm its performance.

Original languageEnglish
JournalIEEJ Transactions on Electronics, Information and Systems
Volume129
Issue number8
DOIs
Publication statusPublished - 2009
Externally publishedYes

Fingerprint

Signal processing
Electric potential
Triodes
Networks (circuits)
Resistors
Processing

Keywords

  • Current amplifier
  • Low power-supply voltage
  • Triode region
  • Voltage-regulated

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Low-voltage variable gain current amplifier for high-voltage signal processing. / Nicodimus, Retdian; Zhang, Jieting; Sato, Takahide; Takagi, Shigetaka.

In: IEEJ Transactions on Electronics, Information and Systems, Vol. 129, No. 8, 2009.

Research output: Contribution to journalArticle

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