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No part of this publication may be Electrochemical Impedance Spectroscopy (EIS) for
reproduced in any form or by any Batteries
This circuit note describes an electrochemical impedance
means without the prior express spectroscopy (EIS) measurement system for characteriz-
ing lithium ion (Li-Ion) and other types of batteries. EIS is
written permission of ICC Media. a safe perturbation technique used to examine processes
occurring inside electrochemical systems.
Although we make every effort to Power saving methods for LTE-M and NB-IoT
present up-to-date, accurate infor- LTE-M and NB-IoT require long battery lifetime to ensure
mation, Power Electronics News will IoT services and minimize maintenance costs in the
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Can You Really Get ppm Accuracies from Op Amps?
Commercially available ppm-accurate amplifiers are
Furthermore, Power Electronics News difficult, if not impossible, to find. This article presents
does not warrant the accuracy or op amp accuracy limitations and how to choose the few
op amps that have a chance of 1 ppm accuracy. It will
completeness of the information, text, also discuss a few application improvements to existing
op amp limitations.
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