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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
91-16 Signal Processing
R
1
and R
2
must be matched and R
G
should be comparable to R
2
. Noise in instrumentation ampliers
built from discrete op amps may exceed that from integrated IAs because noise from separate op amps
will be uncorrelated.
91.5.2 Composite Instrumentation Ampliers
Instrumentation ampliers have a gain limited to about 10,000, at low frequencies, and a bandwidth
around 4 MHz for a gain of 10. Moreover, their inputs must be either dc-coupled or, if ac-coupled with
input series capacitors, there must be a path for bias currents; if that path is a resistor from each input
to ground, then the common-mode input impedance Z
c
de
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Publisher Resources

ISBN: 9781439848913