Abstract
The biomedical industry today demands low noise and low power amplifiers for processing of small amplitude and low frequency biomedical signals. An Operational Transconductance Amplifier (OTA) is best suited for such applications. In this work, a low noise low power OTA is designed using adaptive biasing technique and CMRR improvement circuit to decrease static power dissipation and increase CMRR respectively. Simulation results of the proposed OTA on an ECG signal show a static power dissipation of 127nW and CMRR of 119.93dB which is about 61% lesser and 50% greater than the existing design respectively.
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