By Topic

DC measurement errors due to auto-zeroed amplifier noise

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

3 Author(s)
Trofimenkoff, F.N. ; Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada ; Finvers, I.G. ; Haslett, J.W.

An empirical fit to the noise voltage source spectrum of an auto-zeroed operational amplifier is used to calculate the variance in the measurement of the amplifier's dc input voltage or its input offset voltage. Convenient closed-form solutions for the variance and hence the normalized standard error are obtained. This allows the selection of the integration time required to achieve a desired accuracy in the measurement of the dc voltage if the low-frequency noise plateau is known or to measure the low-frequency noise plateau using a simple circuit and dc voltage measurements

Published in:

Instrumentation and Measurement, IEEE Transactions on  (Volume:45 ,  Issue: 1 )