參數(shù)資料
型號: AK4537VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16-Bit ツヒ Stereo CODEC with MIC/HP/SPK-AMP
中文描述: 16位ツヒ立體聲編解碼器與麥克風/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 33/76頁
文件大小: 576K
代理商: AK4537VN
ASAHI KASEI
[AK4537]
MS0202-E-04
2005/04
- 33 -
The cut-off frequency of Headphone-amp output depends on the external resistor and capacitor used. Table 19 shows the
cut off frequency and the output power for various resistor/capacitor combinations. The headphone impedance R
L
is 16
.
Output powers are shown at HVDD = 2.7, 3.0 and 3.3V. The output voltage of headphone is 0.6 x AVDD (Vpp).
When an external resistor R is smaller than 12
, put an oscillation prevention circuit (0.22
μ
F
±
20% capacitor and
10
±
20% resistor) because it has the possibility that Headphone-amp oscillates.
AK4537
HP-AMP
16
Headphone
10
0.22
μ
R
C
Figure 27. External Circuit Example of Headphone
Output Power [mW]
3.0V
12.4
6.0
12.4
6.0
R [
]
C [
μ
F]
fc [Hz]
BOOST=OFF
152.5
105.8
71.2
49.7
Table 19. External Circuit Example
fc [Hz]
BOOST=MID
63
43
27
20
2.7V
10.0
4.8
10.0
4.8
3.3V
15.0
7.2
15.0
7.2
6.2
16
6.2
16
47
47
100
100
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相關代理商/技術參數(shù)
參數(shù)描述
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