AK4564 Datasheet, PDF (23/48 Pages) Asahi Kasei Microsystems – 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP

ASAHI KASEI
[AK4564]
Headphone-Amps of the AK4564 has a possibility of oscillation depending on headphone characteristics. Therefore,
Headphone-amp oscillation prevention circuit may be needed. Headphone-Amps oscillation prevention circuit example is
shown in Figure 18.
HP-Amp
HPL, HPR
-
16Ω
+
+
0.1µ
16Ω
10Ω
Headphone
Oscillation prevention circuit
Figure 18. Headphone-Amp oscillation prevention circuit example
* When Headphone-Amp and Speaker-Amp are powered-up at the same time, refer to the condition of
“Note 7”, “Note 8” and “Note 10”.
MS0140-E-01
- 23 -
2002/07