參數(shù)資料
型號： AK4646EZ
廠商： ASAHI KASEI POWER DEVICES CORP
元件分類： 消費(fèi)家電
英文描述： Stereo CODEC with MIC/SPK-AMP
中文描述： SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝： 4 X 4 MM, 0.40 MM PITCH, LEAD FREE, PLASTIC, QFN-32
文件頁數(shù)： 49/78頁
文件大?。?/td> 808K
代理商： AK4646EZ
[AK4646EZ]
MS0630-E-00
2007/06
- 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 20. Load impedance is total impedance of series resistance and piezo speaker impedance at 1kHz in 38HFigure 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 20)
3
μ
F (Note 20)
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 40)
6.33Vpp (Note 40)
00
01
10
11
3.37Vpp
4.23Vpp (Note 40)
5.33Vpp (Note 40)
6.71Vpp (Note 40)
Note 40. 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
AK4646 Stereo CODEC with MIC/SPK-AMP
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4647 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
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
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