Next Article in Journal
DeepCAD: A Computer-Aided Diagnosis System for Mammographic Masses Using Deep Invariant Features
Previous Article in Journal
Development and Evaluation of the Virtual Prototype of the First Saudi Arabian-Designed Car
Article Menu

Export Article

Open AccessArticle
Computers 2016, 5(4), 25; doi:10.3390/computers5040025

Low Noise Low Power CMOS Telescopic-OTA for Bio-Medical Applications

School of Electronics Engineering, VIT University, India
*
Authors to whom correspondence should be addressed.
Academic Editor: Yevgeniya Kovalchuk
Received: 11 August 2016 / Revised: 12 October 2016 / Accepted: 14 October 2016 / Published: 25 October 2016
View Full-Text   |   Download PDF [2427 KB, uploaded 25 October 2016]   |  

Abstract

The preamplifier block is crucial in bio-medical signal processing. The power intensive Operational Transconductance Amplifier (OTA) is considered, and the performance of preamplifier is studied. A low noise and low power telescopic OTA is proposed in this work. To reduce the noise contribution in the active load transistors, source degeneration technique is incorporated in the current stealing branch of the OTA. The OTA design optimization is achieved by g m / I d methodology, which helps to determine the device geometrical parameters (W/L ratio). The proposed design was implemented in CMOS 90 nm with bias current and supply voltage of 1.6 µA and 1.2 V, respectively. The post layout simulation results of the proposed amplifier gave a gain of 62 dB with phase margin 57°, CMRR 78 dB, input referred noise 3.2 µVrms, Noise Efficiency Factor (NEF) 1.86 and power consumption of 1.92 µW. View Full-Text
Keywords: low noise preamplifier; telescopic OTA; source degeneration; current stealing; CMOS 90 nm; gm/Id methodology; subthreshold low noise preamplifier; telescopic OTA; source degeneration; current stealing; CMOS 90 nm; gm/Id methodology; subthreshold
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Saidulu, B.; Manoharan, A.; Sundaram, K. Low Noise Low Power CMOS Telescopic-OTA for Bio-Medical Applications. Computers 2016, 5, 25.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Computers EISSN 2073-431X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top