AK4560A Datasheet, PDF (34/47 Pages) Asahi Kasei Microsystems – 16bit CODEC with ALC and MIC/HP/SPK-Amps

ASAHI KASEI
[AK4560A]
n Headphone-Amps
Power supply voltage for Headphone-Amp is supplied from HVDD pin and centered around HVCM voltage. Load
resistance of headphone output is min.220Ω. (Refer to Figure 23).
Output level of Headphone-Amp is gained to +11.8dB internally, and THD+N is 1% at –3.4dBV(1.9Vpp) output level.
(Refer to Figure 22)
FS
FS- 12dB
+2dBV
- 5.5dBV
+7.5dBV
+10dBV
+6.3dBV
+11.8dB
- 5.5dBV
0dBV
- 3.4dBV
THD+N=1%
- 10.0dBV
- 17.5dBV
+7.5dBV
- 8dB
- 10dBV
- 13.7dBV
+11.8dB
- 25.5dBV
- 20dBV
FS- 12dB
LINEOUT(High)
DAC
- 10dBV
- 17.5dBV
+7.5dB
LINEOUT(Low)
Analog Volume
- 17.5dBV
HP- Amp
+11.8dB
- 25.5dBV
OPGA = -8dB
- 30dBV
- 13.7dBV
ALC2
Figure 22. LINEOUT and Headphone-Amp Level Diagram (@VA=2.8V,OPGA=-8dB,VOL1-0=+7.5dB)
MS0028-E-00
- 34 -
2000/05