
85-26 Signal Processing
step, the electrical elements in the LC lter are replaced by its digital realization using Figure 85.15.
Fi
nally,
th
e
in
terconnections
ar
e
su
bstituted
usi
ng
ad
aptors
. Fu
rther
di
scussions
an
d
nu
merical
ex
am-
ples
d
ealing
w
ith
W
DFs
c
an
b
e
f
ound
i
n
R
efs
. [
11–13]
.
85.10 Antialiasing and Smoothing Filters
In this section, two practical application areas of lters in the analog conditioning stage of a data
ac
quisition
sy
stem
ar
e
di
scussed
. A bl
ock
di
agram
of a ty
pical
da
ta
ac
quisition
sy
stem
is sh
own
in
Figure 85.16, consisting of an antialiasing lter before the analog-to-digital converter (ADC) and a
smoothing lter aer t ...