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參數(shù)資料
| 型號(hào)： | AK4646 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類(lèi)： | Codec |
| 英文描述： | Stereo CODEC with MIC/SPK-AMP |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/胰腎聯(lián)合移植腺苷 |
| 文件頁(yè)數(shù)： | 49/79頁(yè) |
| 文件大小： | 789K |
| 代理商： | AK4646 |
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[AK4646]
MS0557-E-02
2007/05
- 49 -
■
Speaker Output
Power supply for Speaker-Amp (SVDD) is 2.2V to 4.0V. In case of dynamic (electromagnetic) speaker (load resistance <
50
Ω
), SVDD is 2.2V to 3.6V.
Speaker Type
Dynamic Speaker
Load Resistance (min)
8
Ω
Load Capacitance (max)
30pF
Note 18. Load impedance is total impedance of series resistance and piezo speaker impedance at 1kHz in 36HFigure 34.
Load capacitance is capacitance of piezo speaker. When piezo speaker is used, 10
Ω
or more series resistors
should be connected at both SPP and SPN pins, respectively.
Table 42. Speaker Type and Power Supply Range
The DAC output signal is input to the Speaker-amp as [(L+R)/2]. The Speaker-amp is mono and BTL output. The gain is
set by SPKG1-0 bits. Output level depends on AVDD voltage and SPKG1-0 bits.
Piezo (Ceramic) Speaker
50
Ω
(Note 18)
3
μ
F (Note 18)
Gain
(default)
SPKG1-0 bits
ALC2 bit =
“
0
”
+4.6dB
+6.6dB
+8.6dB
+10.6dB
Table 43. SPK-Amp Gain
ALC2 bit =
“
1
”
+6.6dB
+8.6dB
+10.6dB
+12.6dB
00
01
10
11
SPK-Amp Output (DAC Input = 0dBFS)
ALC2 bit =
“
0
”
SPKG1-0 bits
ALC2 bit =
“
1
”
(LMTH1-0 bits =
“
00
”
)
3.17Vpp
4.00Vpp
5.04Vpp (Note 38)
6.33Vpp (Note 38)
00
01
10
11
3.37Vpp
4.23Vpp (Note 38)
5.33Vpp (Note 38)
6.71Vpp (Note 38)
Note 38. The output level is calculated by assuming that output signal is not clipped. In actual case, output signal may be
clipped when DAC outputs 0dBFS signal. DAC output level should be set to lower level by setting digital
volume so that Speaker-Amp output level is 4.0Vpp or less and output signal is not clipped.
Table 44. SPK-Amp Output Level
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4646EN | Stereo CODEC with MIC/SPK-AMP |
| AK4647 | Stereo CODEC with MIC/HP-AMP |
| AK4647VN | Stereo CODEC with MIC/HP-AMP |
| AK4648 | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4648EC | Stereo CODEC with MIC/HP/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4646_11 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
| AK4646EN | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
| AK4646ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:STEREO CODEC+SPK |
| AK4646EZ | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
| AK4647 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/HP-AMP |
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