Design and Simulation of Enhanced Bootstrapping technique based low power operational transconductance amplifier

Low-power consumption and linearity are the important parameters of the operational transconductance amplifier (OTA) which effects the working of biological acquisition systems. However, accomplishing low-power operation with enhanced linearity is crucial using MOS devices. An enhanced bootstrapping linearization technique-based OTA working at 1.8 V supply voltage is proposed in this work by means of 0.18 μm technology. The proposed OTA delivers transconductance of 352-772 nA/V over 1 Hz-1 kHz frequency range, total harmonic distortion of -55.1 dB, input voltage range of 5 Vpp, at frequency of 1 kHz, power dissipation of 0.9 μW and figure of merit of 11972.3. The proposed enhanced bootstrapping linearization technique-based OTA is a suitable circuit block for biological acquisition systems.