Motorola DSP56156 Manual page 168

L
10
o
g
0
M
a
-20
g
n
i
t
-40
u
d
e
-60
(
d
B
-80
)
0.001
L
1
o
g
0
M
a -1
g
n
-2
i
t
-3
u
d
e
-4
(
-5
d
B
-6
)
0.001
Figure 6-32 Overall Response of the D/A Section
MOTOROLA
APPLICATION EXAMPLES
1 2 3
0.5 1 1.5
When Using the IIR Filter of Figure 6-31
DSP56156 ON-CHIP SIGMA/DELTA CODEC
4 5
Frequency (kHz)
2 2.5
Frequency (kHz)
Cascade of:
compda105.IIR.Filter
diff2-105.Filter
sum2-105.Filter
analogsum3-105.Filter
analogdiff3-105.Filter
analog-lp.Filter
6 7 8
Cascade of:
compda105.IIR.Filter
diff2-105.Filter
sum2-105.Filter
analogsum3-105.Filter
analogdiff3-105.Filter
analog-lp.Filter
3 3.5 4
6 - 53