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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
88-6 Signal Processing
88.4.3 Linear Errors
Linear errors are the largest and most common errors in an ADC and are easily corrected by sim-
ple calibrations or by additions with and multiplications by correction constants. Linear errors do
no
t
di
stort
th
e
tr
ansfer
fu
nction;
th
ey
on
ly
ch
ange
so
mewhat
th
e
in
put
ra
nge
ov
er
wh
ich
th
e
AD
C
operates.
Figure 88.3 shows the transfer function of an ideal 3 bit ADC with some oset error. e straight
line joining the centers of the code transitions is raised, or oset, by 0.6 LSB, and the bottom graph
sh
ows
th
e
re
sulting
er
ror
. Fi
gure
88.4 sh
ows
an id
eal
3 bi
t
AD
C
wi
th
a +2
5%
ga
in error
. e sl
ope
of the
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Publisher Resources

ISBN: 9781439848913