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參數(shù)資料
| 型號： | AK5702 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 4-Channel ADC with PLL & MIC-AMP |
| 中文描述： | 4通道ADC，帶鎖相環(huán) |
| 文件頁數(shù)： | 36/76頁 |
| 文件大小： | 933K |
| 代理商： | AK5702 |
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[AK5702]
MS0623-E-00
2007/06
- 36 -
■
Mono/Stereo Selection
PMADAL, PMADAR and MIXA bits select mono or stereo mode of ADCA output data. PMADBL, PMADBR and
MIXB bits select mono or stereo mode of ADCB output data. ALC operation (ALC bit = “1”) or digital volume operation
(ALC bit = “0”) is applied to the data in Table 18 and Table 19.
PMADAL bit
PMADAR bit
MIXA bit
ADCA Lch data
0
0
x
0
1
x
Rch Input Signal
1
0
x
Lch Input Signal
0
Lch Input Signal
1
1
1
Table 18. ADCA Mono/Stereo Selection (x: Don’t care)
PMADBL bit
PMADBR bit
MIXB bit
ADCB Lch data
0
0
x
0
1
x
Rch Input Signal
1
0
x
Lch Input Signal
0
Lch Input Signal
1
1
1
Table 19. ADCB Mono/Stereo Selection (x: Don’t care)
■
Digital High Pass Filter
The ADC has a digital high pass filter for DC offset cancellation. The cut-off frequency of the HPF is selected by
HPFA1-0 and HPFB1-0 bits (Table 20, Table 21) and scales with sampling rate (fs). The default value is 3.4Hz
(@fs=44.1kHz).
HPFA1 bit
HPFA0 bit
fs=44.1kHz
0
0
3.4Hz
0
1
6.8Hz
1
0
13.6Hz
1
1
213.9Hz
Table 20. ADCA Digital HPF Cut-off Frequency
HPFB1 bit
HPFB0 bit
fs=44.1kHz
0
0
3.4Hz
0
1
6.8Hz
1
0
13.6Hz
1
1
213.9Hz
Table 21. ADCB Digital HPF Cut-off Frequency
ADCA Rch data
All “0”
Rch Input Signal
Lch Input Signal
Rch Input Signal
(L+R)/2
(default)
All “0”
(L+R)/2
ADCB Rch data
All “0”
Rch Input Signal
Lch Input Signal
Rch Input Signal
(L+R)/2
(default)
All “0”
(L+R)/2
fc
(default)
fs=22.05kHz
1.7Hz
3.4Hz
6.8Hz
109.7Hz
fs=11.025kHz
0.85Hz
1.7Hz
3.4Hz
54.8Hz
fc
(default)
fs=22.05kHz
1.7Hz
3.4Hz
6.8Hz
109.7Hz
fs=11.025kHz
0.85Hz
1.7Hz
3.4Hz
54.8Hz
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| AK5730 | 制造商:AKM 制造商全稱:AKM 功能描述:4-Channel Differential Audio ADC for Line & Mic Inputs |
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