AK4366_04 Datasheet, PDF (19/31 Pages) Asahi Kasei Microsystems – Low Power 24-Bit 2ch DAC with HP-AMP

ASAHI KASEI
[AK4366]
The cut-off frequency of Headphone-amp output depends on the external resistor and capacitor used. Table 11 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
R
C
Headphone
AK4366
16_Ω
Figure 15. 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
4
6
7
47
Table 11. Relationship of external circuit, output power and frequency response
MS0248-E-01
- 19 -
2004/03