CS42438-DMZR View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS42438-DMZR

108 dB, 192 kHz 6-in, 8-out TDM CODEC

Cirrus Logic 

8.2 DAC Output Filter

The CS42438 is a linear phase design and does not include phase or amplitude compensation for an ex-

ternal filter. Therefore, the DAC system phase and amplitude response will be dependent on the external

analog circuitry. Shown below is the recommended active and passive output filters.

DAC1-4

AOUTx -

AOUTx +

1800 pF

C0G

4.75 kΩ

390 pF

5.49 kΩ 2.94 kΩ

C0G

-

1.65 kΩ

5600 pF

887 Ω

C0G

1.87 kΩ

+

1200 pF

C0G

22 µF

22 µF 562Ω

47.5 k Ω

Figure 24. Active Analog Output Filter

DAC1-4

AOUTx+

3.3 µF

560 Ω

+

10 kΩ

C

R ext

C=

Figure 25. Passive Analog Output Filter

Rext+ 560

4 πFSRext560

54

DS646PP2

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