cs4271 Cirrus Logic, Inc., cs4271 Datasheet - Page 33

• Manufacturer Part Number: cs4271
• Description: 24-bit, 192 Khz Stereo Audio Codec
• Manufacturer: Cirrus Logic, Inc.

5.4.2
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.
DS592F1
CS4271
AOUT+
AOUT-
Output Connections
4.42 kΩ
1.33 kΩ
2200 pF
Figure 14. CS4271 Recommended Analog Output Filter
CS4271
6.8 nF
C0G
C0G
AOUT+
AOUT-
Figure 15. Full-Scale Analog Output
Full-Scale Output Level= (AIN+) - (AIN-)= 5 Vpp
2.32 kΩ
1.50 kΩ
715 Ω
4.99 kΩ
22 µF
+
-
470 pF
1.5 nF
C0G
C0G
22 µF
560 Ω
3.75 V
2.5 V
1.25 V
3.75 V
2.5 V
1.25 V
47 kΩ
CS4271
Analog
Out
33