參數(shù)資料
型號(hào): AK4647
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP-AMP
中文描述: 立體聲編解碼器麥克風(fēng)/惠普腺苷
文件頁(yè)數(shù): 45/72頁(yè)
文件大?。?/td> 565K
代理商: AK4647
ASAHI KASEI
[AK4647]
MS0566-E-00
2006/11
- 45 -
<External Circuit of Headphone-Amp >
When BOOST=OFF, the cut-off frequency (fc) of Headphone-Amp depends on the external resistor and capacitor. This
fc can be shifted to lower frequency by using bass boost function. Table 40 shows the cut off frequency and the output
power for various resistor/capacitor combinations. The headphone impedance R
L
is 16
Ω
. Output powers are shown at
HVDD = 3.0, 3.3 and 5.0V. The output voltage of headphone is 0.6 x AVDD (Vpp) @HPG bit = “0” and 0.91 x AVDD
(Vpp) @HPG bit = “1”.
When an external resistor R is smaller than 12
Ω
, put an oscillation prevention circuit (0.22
μ
F
±
20% capacitor and
10
Ω±
20% resistor) because it has the possibility that Headphone-Amp oscillates.
AK4647
HP-AMP
16
Ω
Headphone
10
Ω
0.22
μ
R
C
Figure 34. External Circuit Example of Headphone
Output Power [mW]@0dBFS
HPG bit
R [
Ω
]
C [
μ
F]
fc [Hz]
BOOST=OFF
fc [Hz]
BOOST=MIN
@fs=44.1kHz
28
78
19
47
17
43
25
69
2.7V
3.0V
3.3V
100
47
100
47
220
100
22
10
70
149
50
106
45
100
62
137
6.8
10.1
12.5
15.1
0
16
5.1
6.3
7.7
0
33
41
50
1
100
0.9
1.1
1.3
Table 40. External Circuit Example
相關(guān)PDF資料
PDF描述
AK4647VN Stereo CODEC with MIC/HP-AMP
AK4648 Stereo CODEC with MIC/HP/SPK-AMP
AK4648EC Stereo CODEC with MIC/HP/SPK-AMP
AK4650 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
AK4650VG 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4647VN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4647VQ 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4648 制造商:AKM 制造商全稱:AKM 功能描述:stereo CODEC with MIC/HP/SPK amplifier
AK4648EC 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP/SPK-AMP
AK4649 制造商:AKM 制造商全稱:AKM 功能描述:24bit Stereo CODEC with MIC/SPK-AMP