By Topic

CMOS current source for shortened square wave waveforms

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
$31 $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

2 Author(s)
Kasemaa, A. ; Dept. of Electron., TTU, Tallinn ; Annus, P.

In many practical cases sinusoidal signals can be replaced with suitable approximations. Well-known alternative is the three level shortened square wave. By introducing more equally spaced levels, higher harmonics can be further reduced. This multilevel signal is easy to generate digitally and enables simple digital processing involving only additions and shifting. An efficient CMOS technology based current source can be designed to work with such waveforms. The current source consists of Beta-multiplier type biasing circuit, switchable current mirrors and H-bridge output stage. In this case the use of H-bridge output permits possibility to avoid the conventional instrumentation amplifier (simple buffer can be used), resulting a reduction of the whole measuring system complexity.

Published in:

Electronics Conference, 2008. BEC 2008. 11th International Biennial Baltic

Date of Conference:

6-8 Oct. 2008