A Novel Design of Adaptively Biased Linear MOS Transconductor

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Lieutenant Colonel Pravit Tongpoon


This paper presents a new concept for a circuit for linear MOS operating transconductance amplifiers (OTA). The proposed OTA is based on a source-coupled pairing, which is linearized by a new adaptive biasing circuit. A conventional adaptively biased MOS transconductor is known as a linear OTA. However, these OTAs tend to employ a single-end converter circuit to achieve linear transfer characteristics, which also results in low PSRR. This paper proposes a new adaptively biased OTA, which has good linearity but without a single-end converter circuit and high PSRR. Simulation results show that the proposed OTA is effective for the improvement of the linearity, PSRR, CMRR and THD.

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How to Cite
P. Tongpoon, “A Novel Design of Adaptively Biased Linear MOS Transconductor”, Crma. J., ปี 19, ฉบับที่ 1, น. 26–33, ก.ย. 2021.


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