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參數(shù)資料
| 型號(hào)： | AK4673EG |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP and Touch Screen Controller |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普- AMP及觸摸屏控制器 |
| 文件頁(yè)數(shù)： | 66/107頁(yè) |
| 文件大小： | 1171K |
| 代理商： | AK4673EG |
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[AK4673]
MS0670-E-00
2007/09
- 66 -
AK4673
HP-AMP
16
Ω
Headphone
10
Ω
0.22
μ
C
R
Figure 56. 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
17
43
28
78
19
47
17
43
25
69
HVDD=3.0V
AVDD=3.0V
HVDD=3.3V
AVDD=3.3V
HVDD=5V
AVDD=3.3V
220
100
100
47
100
47
220
100
22
10
45
100
70
149
50
106
45
100
62
137
0
25.3
30.6
30.6
6.8
12.5
15.1
15.1
0
16
6.3
7.7
7.7
0
51
(
Note 41
)
62
(
Note 41
)
70
1
100
1.1
1.3
1.3
Note 40. Output power at 16
Ω
load.
Note 41. Output signal is clipped.
Table 55. External Circuit Example
<Headphone-Amp PSRR>
When HVDD is directly supplied from the battery in the mobile phone system, RF noise may influences headphone
output performance. When VBAT bit is set to “1”, HP-Amp PSRR for the noise applied to HVDD is improved. In this
case, HP-Amp common voltage is 0.64 x AVDD (typ). When AVDD is 3.3V, common voltage is 2.1V. Therefore, when
HVDD voltage becomes lower than 4.2V, the output signal will be clipped easily.
VBAT bit
0
Common Voltage [V]
0.5 x HVDD
Table 56. HP-Amp Common Voltage
<Wired OR with External Headphone-Amp>
When PMVCM=PMHPL=PMHPR bits = “0” and HPZ bit = “1”, HP-Amp is powered-down and HPL/R pins are
pulled-down to VSS2 by 200k
Ω
(typ). In this setting, it is available to connect HP-Amp of AK4673 and external single
supply HP-Amp by “wired OR”. In this mode, power supply current is 20
μ
A(typ).
PMVCM
PMHPL/R
HPMTN
HPZ
x
0
x
0
0
0
x
1
1
1
0
x
1
1
1
x
Table 57. HP-Amp Mode Setting (x: Don’t care)
1
0.64 x AVDD
Mode
HPL/R pins
VSS2
Pull-down by 200k
Ω
VSS2
Normal Operation
Power-down & Mute
Power-down
Mute
Normal Operation
(default)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4675 | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP |
| AK4675EG | 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/RCV/HP/SPK-AMP |
| AK4682 | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector |
| AK4682AEQ | 功能描述:IC CODEC MULTI-CHANNEL 48LQFP 制造商:akm semiconductor inc. 系列:* 零件狀態(tài):上次購(gòu)買時(shí)間 標(biāo)準(zhǔn)包裝:1,000 |
| AK4682EQ | 制造商:AKM 制造商全稱:AKM 功能描述:Multi-channel CODEC with 2Vrms Stereo Selector |
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