參數(shù)資料
型號: AK4643EN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP/RCV/SPK-AMP
中文描述: 立體聲編解碼器麥克風/惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數(shù): 64/104頁
文件大?。?/td> 926K
代理商: AK4643EN
ASAHI KASEI
[AK4643]
MS0476-E-01
2006/10
- 64 -
Speaker Output
Power supply for Speaker-Amp (HVDD) is 2.6V to 5.25V.
Speaker Type
Load Resistance (min)
Load Capacitance (max)
Note 23. Load impedance is total impedance of series resistance (Rseries) and piezo speaker impedance at 1kHz in Figure
61. 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 56. Speaker Type and Power Supply Range
The DAC or LIN2/RIN2/LIN3/RIN3 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.
Dynamic Speaker
8
30pF
Piezo (Ceramic) Speaker
50
3
μ
F
Gain
Default
SPKG1-0 bits
ALC bit = “0”
+4.43dB
+6.43dB
+10.65dB
+12.65dB
Table 57. 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 47)
6.75Vpp (Note 47)
8.50Vpp (Note 47)
3.30Vpp
4.15Vpp
6.75Vpp (Note 47)
8.50Vpp (Note 47)
AVDD
HVDD
SPKG1-0 bits
ALC bit = “1”
00
01
10
11
00
01
10
11
3.11Vpp
3.92Vpp
6.37Vpp (Note 47)
8.02Vpp (Note 47)
3.11Vpp
3.92Vpp
6.37Vpp (Note 47)
8.02Vpp (Note 47)
3.3V
3.3V
5.0V
Note 47. 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 (HVDD=3.3V) or 6.0V (HVDD=5V) or less and output
signal is not clipped.
Table 58. SPK-Amp Output Level
相關PDF資料
PDF描述
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
AK4646EN Stereo CODEC with MIC/SPK-AMP
相關代理商/技術參數(shù)
參數(shù)描述
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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AK4645ENP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述: