ak4651 AKM Semiconductor, Inc., ak4651 Datasheet - Page 38
ak4651
Manufacturer Part Number
ak4651
Description
16bit ?? Codec With Mic/hp/spk-amp
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK4651.pdf
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ASAHI KASEI
The cut-off frequency of Headphone-amp output depends on the external resistor and capacitor used. Table 33 shows the
cut off frequency and the output power for various resistor/capacitor combinations. The Headphone impedance R
16Ω. Output powers are shown at HVDD = 2.7, 3.0 and 3.3V. The output voltage of Headphone is 0.6 x AVDD (Vpp).
MS0503-E-00
R [Ω]
6.8
16
0
Table 33. Relationship of external circuit, output power and frequency response
C [µF]
220
100
100
100
47
47
Figure 26. External Circuit Example of Headphone
HP-AMP
BOOST=OFF
AK4651
fc [Hz]
148.5
105.8
45.2
99.5
69.8
49.7
BOOST=MIN
R
- 38 -
fc [Hz]
17
42
28
74
19
46
C
Headphone
2.7V
16Ω
27.9
13.7
7.0
Output Power [mW]
3.0V
34.5
17.0
8.6
3.3V
10.4
41.7
20.5
[AK4651]
2006/04
L
is
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