Motorola DSP56156 Manual page 173

10
L
0
o
g
M
a
-20
g
n
i
t
-40
u
d
e
-60
(
d
B
)
-80
0.001
1
L
o
0
g
M
-1
a
g
n
-2
i
t
-3
u
d
e
-4
(
d
-5
B
)
-6
0.001
Figure 6-36 Overall Response of the A/D Section
6 - 58
APPLICATION EXAMPLES
2 4
0.5 1 1.5
when Using the IIR Filter of Figure 6-35
DSP56156 ON-CHIP SIGMA/DELTA CODEC
6 8
Frequency (kHz)
2 2.5
Frequency (kHz)
Cascade of:
sum3-81.Filter
diff3-81.Filter
compad81.IIR.Filter
10 12
Cascade of:
sum3-81.Filter
diff3-81.Filter
compad81.IIR.Filter
3 3.5 4
MOTOROLA