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

Nicodimus Retdian; Jieting Zhang; Takahide Sato; Shigetaka Takagi

doi:10.1541/ieejeiss.129.1511

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

Nicodimus Retdian, Jieting Zhang, Takahide Sato, Shigetaka Takagi

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	1511-1517+10
Journal	IEEJ Transactions on Electronics, Information and Systems
Volume	129
Issue number	8
DOIs	https://doi.org/10.1541/ieejeiss.129.1511
Publication status	Published - 2009
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Electrical and Electronic Engineering

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T1 - Low-voltage variable gain current amplifier for high-voltage signal processing

AU - Retdian, Nicodimus

AU - Zhang, Jieting

AU - Sato, Takahide

AU - Takagi, Shigetaka

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

KW - Current amplifier

KW - Low power-supply voltage

KW - Triode region

KW - Voltage-regulated

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JO - IEEJ Transactions on Electronics, Information and Systems

JF - IEEJ Transactions on Electronics, Information and Systems

SN - 0385-4221

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

Abstract

Keywords

ASJC Scopus subject areas

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