By Topic

An Ultralow-Power Low-Voltage Class-AB Fully Differential OpAmp for Long-Life Autonomous Portable Equipment

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
María Rodanas Valero Bernal ; Group of Electronic Design-I3A, University of Zaragoza, Zaragoza, Spain ; S. Celma ; N. Medrano ; B. Calvo

This brief presents an ultralow-power class-AB operational amplifier (OpAmp) designed in a low-cost 0.18- μm CMOS technology. The proposed circuit uses transistors biased in the subthreshold region for low-voltage low-power operation. For a 0.8-V single supply, this OpAmp has 51-dB open-loop gain, 57-kHz unity-gain frequency, 60° phase margin, and 65-dB common-mode rejection ratio for 8-pF loads with a power consumption of only 1.2 μW. Experimental results illustrate performances such as a 0.14-V/μs slew rate and a 750-mV linear output swing, demonstrating its correct functionality.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:59 ,  Issue: 10 )