Design of Low Power Neuro-amplifier Circuit with Miller Compensation Technique for Biomedical Neuro-implantable Devices

Kriti Dwivedi; Aparna Gupta; Ritika Oberoi; Ribu Mathew

Design of Low Power Neuro-amplifier Circuit with Miller Compensation Technique for Biomedical Neuro-implantable Devices

Authors

Kriti Dwivedi

School of Electrical and Electronics Engineering (SEEE) VIT Bhopal University, Bhopal, India

Aparna Gupta

School of Electrical and Electronics Engineering (SEEE) VIT Bhopal University, Bhopal, India

Ritika Oberoi

School of Electrical and Electronics Engineering (SEEE) VIT Bhopal University, Bhopal, India obe

Ribu Mathew

School of Electrical and Electronics Engineering (SEEE) VIT Bhopal University, Bhopal, India obe

DOI: https://doi.org/10.21467/proceedings.114.14

Synopsis

Neuro-amplifiers form an integral part of biomedical implantable devices. In this paper, we design a neuro-amplifier circuit with Miller compensation capacitor. The neuro-amplifier design is based on operational transconductance amplifier (OTA) with an active load. In this work, performance of the neuro-amplifier is enhanced by incorporating the Miller compensation technique. Design and simulation of the neuro-amplifier circuit is performed using SPICE simulation software. Body biasing and feedback techniques are imparted to optimize the circuit performance. Simulation results show that the neuro-amplifier circuit has a mid-frequency gain and 3-dB bandwidth of 48dB, and 16kHzrespectively.