Abstract
An operational trans-conductance amplifier (OTA) is a fundamental component of electronic appliances. This paper introduces a novel design of OTA for minimal power, low voltage applications. The proposed OTA comprises an ultra low power current mirror design with enhanced bandwidth. The proposed OTA circuit is operated at 0.8[Formula: see text]V, contributing input noise of 26.33[Formula: see text]nV/(Hz)[Formula: see text] with a power of [Formula: see text]W. The additional parameters of new OTA are DC gain (87.32[Formula: see text]dB), common mode rejection ratio (145.47[Formula: see text]dB), gain bandwidth (4.73[Formula: see text]MHz), phase margin (36.56[Formula: see text]). These figures are significantly improved as compared to conventional OTAs. Analog-to-digital convertor (ADC) is also designed as an application of the proposed OTA. The improvements offered by ADC in terms of power and bandwidth are also compared with state of the art.
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