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A Low Power, High Gain Miller Compensated Operational Transconductance Amplifier


Vijay Solanki , SAGE University; Ritu Chalotre, SAGE University


Bandwidth, CMOS, Compensation-Capacitor, Low-Voltage, OTA


This paper proposes a 72dB-gain operational transconductance amplifier (OTA) with an enhanced bandwidth and a reduced compensation-capacitor. The proposed OTA expands the bandwidth and decreases the compensation-capacitor in the low-voltage bulk-driven Miller OTAs [1]-[2] by using the indirect feedback compensation method [3]. The proposed OTA was implemented using a 32nm CMOS process. In the simulation, it has a 72dB-gain and consumes 1.94nW at 250mV supply-voltage. The unit-gain frequency is 14kHz. The compensation-capacitor is 0.6pF.

Other Details

Paper ID: IJSRDV7I30148
Published in: Volume : 7, Issue : 3
Publication Date: 01/06/2019
Page(s): 608-609

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