CS42432_06 Datasheet, PDF (50/59 Pages) Cirrus Logic – 108 dB, 192 kHz 4-In, 6-Out TDM CODEC

CS42432
8.2 DAC Output Filter
The CS42432 is a linear phase design and does not include phase or amplitude compensation for an exter-
nal filter. Therefore, the DAC system phase and amplitude response will be dependent on the external an-
alog circuitry. Shown below is the recommended active and passive output filters.
DAC1-3
AOUTx -
AOUTx +
1800
pF
C0
G
5.49 kΩ
1.65 kΩ
5600 pF
C0
G
4.75 kΩ
390
pF
2.94 kΩ
C0
-
G
88
7
Ω
1.87 kΩ
+
1200 pF
C0
G
2
2
μF
22 μF
56
2
Ω
47.5 k Ω
Figure 23. Active Analog Output Filter
DAC1-3
AOUTx+
3.3 µF
560 Ω
+
10 kΩ
C
R _ext
C=
Figure 24. Passive Analog Output Filter
R_ext+ 560
4πF_SR_ext560
50
DS673F1