Design of CMOS OTAs for Low-Voltage and Low-Power Application

Hisashi TANAKA; Koichi TANNO; Hiroki TAMURA; Kenji MURAO

doi:10.1093/ietfec/e91-a.11.3385

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

Online ISSN : 1745-1337
Print ISSN : 0916-8508

Regular Section

Design of CMOS OTAs for Low-Voltage and Low-Power Application

Hisashi TANAKA, Koichi TANNO, Hiroki TAMURA, Kenji MURAO

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Keywords: weak inversion region, OTA, low-voltage, low-power, high-linearity

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2008 Volume E91.A Issue 11 Pages 3385-3388

DOI https://doi.org/10.1093/ietfec/e91-a.11.3385

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Abstract

In this letter, two OTAs with MOSFETs operating in the weak inversion region are proposed. One of the OTAs uses the exponential-logarithm transformation algorithm. Furthermore, the other realizes the high-linearity characteristics due to a small fluctuation of the common-terminal voltage of differential pair. The performance of the proposed OTAs was confirmed by HSPICE simulation.

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