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參數(shù)資料
| 型號(hào)： | AK4640 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16BIT CODEC WITH MIC /HP/SPK-AMPl |
| 中文描述： | 16位編解碼器麥克風(fēng)/惠普/胰腎聯(lián)合移植，AMPl |
| 文件頁數(shù)： | 26/76頁 |
| 文件大小： | 634K |
| 代理商： | AK4640 |
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ASAHI KASEI
[AK4640]
MS0273-E-00
2004/03
- 26 -
Mode
0
1
2
3
PS1
0
0
1
1
PS0
0
1
0
1
MCKO
256fs
128fs
64fs
32fs
Default
Table 8. MCKO Frequency (EXT Mode, MCKO bit = “1”)
Master Mode (M/S pin = “H”)
Power up
MCKO bit = “0” : “L”
MCKO bit = “1” : Output
BF bit = “0” : 64fs Output
BF bit = “1” : 32fs Output
Output
Table 9. Clock Operation at Master Mode (EXT Mode)
Power down
MCKO pin
“L”
BICK pin
“L”
LRCK pin
“L”
Slave Mode (M/S pin = “L”)
Power down
Power up
MCKO bit = “0” : “L”
MCKO bit = “1” : Output
Input
Input
Table 10. Clock Operation at Slave Mode (EXT Mode)
MCKO pin
“L”
BICK pin
LRCK pin
Fixed to “L” or “H” externally
Fixed to “L” or “H” externally
The S/N of the DAC at low sampling frequencies is worse than at high sampling frequencies due to out-of-band noise.
The out-of-band noise can be improved by using higher frequency of the master clock. The S/N of the DAC output
through Headphone amp at fs=8kHz is shown in Table 11.
MCKI
S/N (fs=8kHz, A-weighted)
256fs
512fs
1024fs
Table 11. Relationship between MCKI and S/N of HP-AMP
Master Mode/Slave Mode
The M/S pin selects either master or slave modes. M/S pin = “H” selects master mode and “L” selects slave mode. The
AK4640 outputs MCKO, BICK and LRCK in master mode. The AK4640 outputs only MCKO in slave mode, while
BICK and LRCK must be input separately.
Mode
MCKO
84dB
88dB
88dB
BICK / LRCK
BICK = Input
LRCK = Input
BICK = Output
LRCK = Output
Slave Mode
MCKO = Output
Master Mode
MCKO = Output
Table 12. Master mode/Slave mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AK4645EZ | Stereo CODEC with MIC/HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4640_05 | 制造商:AKM 制造商全稱:AKM 功能描述:16-Bit ツヒ CODEC with MIC/HP/SPK-AMP |
| AK4640VG | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4640VN | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH MIC /HP/SPK-AMPl |
| AK4641 | 制造商:AKM 制造商全稱:AKM 功能描述:16 BIT CODEC WITH BLUETOOTH INTERFACE |
| AK4641EN | 制造商:AKM 制造商全稱:AKM 功能描述:16bit stereo CODEC with built-in Microphone-amplifier and 16bit Mono CODEC for Bluetooth Interface. |
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