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參數(shù)資料
| 型號： | AK4633 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| 中文描述： | 16位單聲道編解碼器ALC的 |
| 文件頁數(shù)： | 52/82頁 |
| 文件大?。?/td> | 688K |
| 代理商： | AK4633 |
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ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 52 -
Speaker Output
The power supply voltage for Speaker-Amp SVDD can be set to from 2.2V to 4.0V. However, SVDD should be set to
from 2.6V to 3.6V, when 8
dynamic speaker is connected. If SVDD is more than 3.6V when 8
dynamic speaker is
connected to the AK4633, the output of Speaker-Amp should be restricted in consideration of maximum power
dissipation.
The output signal from DAC is input to the Speaker-amp. This Speaker-amp is a mono output controlled by BTL and the
gain of Speaker-Amp is set by SPKG1-0 bits. The output voltage depends on AVDD and SPKG1-0 bits.
SPK-AMP Output Level[Vpp]
DAC =-4.1dBFS (Note 30)
00
3.17
01
4.00
10
5.03
11
6.33
Note 30. AVDD=3.3V. The output level is proportional to AVDD.
Note 31. The Gain with a reference of SPKG1-0 bits =
“
00
”
.
Note 32. The setting of SPKG1-0 bits =
“
01
” is
recommend when 8
dynamic speaker is connected.
The SPK-Amp Power is 250mW at 8
Load Resistance and 4.0Vpp output level.
Table 35. SPK-Amp Output Voltage and Gain
<Caution for using Piezo Speaker>
When a piezo speaker is used, resistances more than 10
should be inserted between SPP/SPN pins and speaker in series,
respectively, as shown in Figure 41. Zener diodes should be inserted between speaker and GND as shown in Figure 41, in
order to protect SPK-Amp of AK4633 from the power that the piezo speaker outputs when the speaker is pressured. Zener
diodes of the following Zener voltage should be used.
92% of SVDD
≤
Zener voltage of Zener diodo(ZD of Figure 41)
≤
SVDD+0.3V
Ex) In case of SVDD = 3.8V : 3.5V
≤
ZD
≤
4.1V
For example, Zener diode which Zener voltage is 3.9V(Min 3.7V, Max 4.1V) can be used.
SPKG1-0 bits
Gain
(Note 31)
0dB
+2dB
+4dB
+6dB
SPP
SPK-Amp
SPN
≥
10
≥
10
ZD
ZD
Figure 41. Circuit of Speaker Output (using a piezo speaker)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4640 | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VG | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VN | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4642EN | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4643EN | Stereo CODEC with MIC/HP/RCV/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4633ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4633VN | 制造商:AKM 制造商全稱:AKM 功能描述:16bit mono CODEC with MIC/SPK amplifier. |
| AK4633VNP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:LOW COST MONO CODEC WITH SPK A |
| AK4634 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK-AMP |
| AK4635 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit Mono CODEC with ALC & MIC/SPK/Video-AMP |
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