CS42438-DMZR(2006) 데이터 시트보기 (PDF) - Cirrus Logic

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CS42438-DMZR
(Rev.:2006)

108 dB, 192 kHz 6-In, 8-Out TDM CODEC

Cirrus Logic 

CS42438

8.2 DAC Output Filter

The CS42438 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.

DAC1-4

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

DS646F1

53

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