A Low Power Variable Gain Amplifier for Biomedical Application

Forfattere

  • Dipesh Panchal Department of Electronics and Communication Engineering, Nirma University, Ahmedabad, India
  • Amisha Naik Department of Electronics and Communication Engineering, Nirma University, Ahmedabad, India
  • N M Devashrayee Department of Electronics and Communication Engineering, Nirma University, Ahmedabad, India

Resumé

This paper describes the design and simulation of low power variable gain amplifier used for biomedical application like hearing aid, Electronic Cardiograph and neural recording system. The MOS transistor is designed to operate in subthreshold region for low power application. The gain of amplifier is changed by selecting different values of input capacitor in the frequency range of 20 Hz–20 KHz. The simulated total power dissipation is 3µW. The gain variation is from 10–30 dB with supply voltage of 1.8V in TSMC 0.18 µm process using mentor graphics.   Keywords: Weak inversion, strong inversion, miller compensated opamp, hearing aid, variable gain amplifier   

Downloads

Publiceret

2014-11-18

Nummer

Årg. 4 Nr. 3 (2014)

Sektion

Research Articles

Licens

Declaration and Copyright Transfer Form

(to be completed by authors)

 

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

·         I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.

·         I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).

·         I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.

·          I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. _______________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.