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Combiner-Based MOS OTAs
Koichi TANNO Kenya KONDO Okihiko ISHIZUKA Takako TOYAMA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Analog Signal Processing
OTA, operational transconductance amplifier, combiner, CMOS analog integrated circuits,
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In this letter, two kinds of MOS operational transconductance amplifiers (OTAs) based on combiners are presented. Each OTA has the following advantages; one of the proposed OTAs (OTA-1) can be operated at low supply voltage and the other OTA (OTA-2) has wide bandwidth. Through HSPICE simulations with a standard 0.35 µm CMOS device parameters, the operation under the supply voltage of 1.5 V for OTA-1 and the -3 dB bandwidth of several gigahertz for OTA-2 are confirmed.