參數(shù)資料
型號(hào)： AK4642EN
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： Codec
英文描述： Stereo CODEC with MIC/HP/SPK-AMP
中文描述： 立體聲編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù)： 49/83頁
文件大?。?/td> 670K
代理商： AK4642EN
ASAHI KASEI
[AK4642EN]
MS0420-E-00
2005/09
- 49 -
Speaker Output
Power supply for Speaker-Amp (HVDD) is 2.6V to 5.25V. In case of dynamic (electromagnetic) speaker (load resistance
< 50
), HVDD is 2.6V to 3.6V.
Speaker Type
Dynamic Speaker
HVDD
2.6
～
3.6V
Load Resistance (min)
8
Load Capacitance (max)
30pF
Note 23. Load impedance is total impedance of series resistance and piezo speaker impedance at 1kHz in Figure 33. Load
capacitance is capacitance of piezo speaker. When piezo speaker is used, 10
or more series resistors should be
connected at both SPP and SPN pins, respectively.
Table 40. 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
2.6
～
5.25V
50
(Note 23)
3
μ
F (Note 23)
Gain
Default
SPKG1-0 bits
ALC bit = “0”
+4.43dB
+6.43dB
+10.65dB
+12.65dB
Table 41. SPK-Amp Gain
ALC bit = “1”
+6.43dB
+8.43dB
+12.65dB
+14.65dB
00
01
10
11
SPK-Amp Output (DAC Input = 0dBFS)
ALC bit = “0”
(LMTH1-0 bits = “00”)
3.30Vpp
4.15Vpp (Note 40)
6.75Vpp (Note 40)
8.50Vpp (Note 40)
3.30Vpp
4.15Vpp
6.75Vpp
8.50Vpp
AVDD
HVDD
SPKG1-0 bits
ALC bit = “1”
00
01
10
11
00
01
10
11
3.11Vpp
3.92Vpp
6.37Vpp (Note 40)
8.02Vpp (Note 40)
3.11Vpp
3.92Vpp
6.37Vpp
8.02Vpp
3.3V
3.3V
5.0V
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 42. SPK-Amp Output Level
相關(guān)PDF資料
PDF描述
AK4643EN Stereo CODEC with MIC/HP/RCV/SPK-AMP
AK4645EZ Stereo CODEC with MIC/HP-AMP
AK4645 Stereo CODEC with MIC/HP-AMP
AK4646EZ Stereo CODEC with MIC/SPK-AMP
AK4646 Stereo CODEC with MIC/SPK-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4642VN 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit ???￡ Stereo CODEC with MIC/HP/SPK-AMP
AK4643 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with built-in MIC/HP/RCV/SPK amplifier
AK4643EN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP/RCV/SPK-AMP
AK4644 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with built-in MIC/HP/RCV amplifier
AK4644EN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP/RCV-AMP
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