Physical Design of Low Power Operational Amplifier

Shanta Lakra , Sandeep Mishra

Approach for low power operational amplifier,Deep Learning.

A CMOS single output two stage operational amplifier is presented which operates at 3 V power supply at 0.18 micron (i.e., 180 nm) technology. It is designed to meet a set of provided specifications. The unique behavior of the MOS transistors in sub- threshold region not only allows a designer to work at low input bias current but also at low voltage. This op- amp has very low standby power consumption with a high driving capability and operates at low voltage so that the circuit operates at low power. The op-amp provides a gain of 20.4dB and a -3db bandwidth of 202 kHz and a unity gain bandwidth of 2.15MHz for a load of 5 pF capacitor. This op-amp has a PSRR (+) of 85.0 dB and a PSRR (-) of 60.0 dB. It has a CMRR (dc) of -64.4 dB, and an output slew rate of 12.465 v/µs. The power consumption for the op- amp is 1.18mW. The presented op-amp has a Input Common Mode Range(ICMR) of -1V to 2.4V. The op-amp is designed in the 180 nm technology using the umc 180 nm technology library. The layout for the above op- amp had been designed and the post layout simulations are compared with the schematic simulations. The proposed op-amp is a simple two stage single ended op-amp. The input stage of the op- amp is a differential amplifier with an NMOS pair. The second stage of the op-amp is a simple PMOS common source amplifier. The second stage is used to increase the voltage swing at the output. The op- amp uses a -3v Vdd and a -3v Vss and consumes a power of around 0.6mW (as per post layout simulations).

Published Paper   E-Certificate

"Physical Design of Low Power Operational Amplifier", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.6, Issue 6, page no.22 - 29, June-2021, Available :https://ijsdr.org/papers/IJSDR2106004.pdf

Volume 6 Issue 6, June-2021

Pages : 22 - 29

Paper Reg. ID: IJSDR_193347

Published Paper Id: IJSDR2106004

Downloads: 000347041

Research Area: Engineering

Country: Bilaspur, Chhattisgarh, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR2106004

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR2106004

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition