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參數(shù)資料
| 型號(hào)： | AK4647 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普腺苷 |
| 文件頁(yè)數(shù)： | 42/72頁(yè) |
| 文件大?。?/td> | 565K |
| 代理商： | AK4647 |
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ASAHI KASEI
[AK4647]
MS0566-E-00
2006/11
- 42 -
Stereo Line Output (LOUT/ROUT pins)
When DACL bit is “1”, Lch/Rch signal of DAC is output from the LOUT/ROUT pins which is single-ended. When
DACL bit is “0”, output signal is muted and LOUT/ROUT pins output VCOM voltage. The load impedance is 10k
Ω
(min.). When the PMLO bit = LOPS bit = “0”, the stereo line output enters power-down mode and the output is
pulled-down to AVSS by 100k
Ω
(typ). When the LOPS bit is “1”, stereo line output enters power-save mode. Pop noise at
power-up/down can be reduced by changing PMLO bit at LOPS bit = “1”. In this case, output signal line should be
pulled-down to AVSS by 20k
Ω
after AC coupled as Figure 31. Rise/Fall time is 300ms(max) at C=1
μ
F. When PMLO bit
= “1”, LOPS bit = “0”, stereo line output is in normal operation.
LOVL bit set the gain of stereo line output.
“DACL”
DAC
LOUT pin
ROUT pin
“LOVL”
Figure 30. Stereo Line Output
LOPS
PMLO
0
1
0
1
Table 37. Stereo Line Output Mode Select (x: Don’t care)
Mode
LOUT/ROUT pin
Pull-down to AVSS
Normal Operation
Fall down to AVSS
Rise up to VCOM
Default
Power-down
Normal Operation
Power-save
Power-save
0
1
LOVL
0
1
Gain
0dB
+2dB
Output Voltage (typ)
0.6 x AVDD
0.757 x AVDD
Default
Table 38. Stereo Line Output Volume Setting
LOUT
ROUT
1
μ
F
220
Ω
20k
Ω
Figure 31. External Circuit for Stereo Line Output (in case of using Pop Reduction Circuit)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4647VN | Stereo CODEC with MIC/HP-AMP |
| AK4648 | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4648EC | Stereo CODEC with MIC/HP/SPK-AMP |
| AK4650 | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
| AK4650VG | 16Bit ツヒ CODEC with MIC/HP/SPK-AMP & TSC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| AK4649 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit Stereo CODEC with MIC/SPK-AMP |
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