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Design of CMOS OTAs for Low-Voltage and Low-Power Application
Hisashi TANAKA Koichi TANNO Hiroki TAMURA Kenji MURAO
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/11/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Analog Signal Processing
weak inversion region, OTA, low-voltage, low-power, high-linearity,
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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.