AK4367 Datasheet, PDF (20/38 Pages) Asahi Kasei Microsystems – OUTPUT MIXER & HP - AMP 24 BIT 2 CH DAC

ASAHI KASEI
[AK4367]
The cut-off frequency of Headphone-amp output depends on the external resistor and capacitor used. Table 10 shows the
cut off frequency and the output power for various resistor/capacitor combinations. The headphone impedance R_L is 16Ω.
Output powers are shown at HVDD = 2.4, 3.0 and 3.3V. The output voltage of headphone is 0.47 x VDD (Vpp)
@−4.8dBFS.
HP-AMP
AK4367
R
C _Headphone
16Ω
Figure 16. External Circuit Example of Headphone
R [Ω]
0
6.8
16
C [µF]
fc [Hz]
fc [Hz]
BOOST=OFF BOOST=MIN
Output Power [mW]
2.4V
3.0V
3.3V
220
45
100
100
17
15
24
28
43
100
70
47
149
28
7
12
14
78
100
50
47
106
19
47
4
6
7
Table 10. Relationship of external circuit, output power and frequency response
MS0247-E-01
- 20 -
2004/11