CS4271 查看數據表（PDF） - Cirrus Logic

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CS4271

24-Bit, 192 kHz Stereo Audio CODEC

Cirrus Logic 

CS4271

5.4.2 Output Connections

The recommended output filter configuration is shown in Figure 14. This filter configuration accounts for the normally

differing AC loads on the AOUT+ and AOUT- differential output pins. It also shows an AC coupling configuration

which minimizes the number of required AC coupling capacitors.

The CS4271 does not include phase or amplitude compensation for an external filter, and therefore the DAC system

phase and amplitude response will be dependent on the external analog circuitry. Figure 15 shows the full-scale an-

alog output levels.

CS4271

AOUT-

AOUT+

2200 pF

C0G

4.99 kΩ

470 pF

4.42 kΩ 2.32 kΩ

C0G

-

1.33 kΩ 715 Ω

+

1.5 nF

6.8 nF

C0G

1.50 kΩ

C0G

22 µF

22 µF 560 Ω

47 kΩ

Figure 14. CS4271 Recommended Analog Output Filter

Analog

Out

CS4271

AOUT+

AOUT-

3.75 V

2.5 V

1.25 V

3.75 V

2.5 V

1.25 V

Full-Scale Output Level= (AIN+) - (AIN-)= 5 Vpp

Figure 15. Full-Scale Analog Output

DS592F1

33

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