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參數(shù)資料
| 型號： | AK5702VN |
| 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)： | 48/76頁 |
| 文件大?。?/td> | 933K |
| 代理商： | AK5702VN |
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[AK5702]
MS0623-E-00
2007/06
- 48 -
■
System Reset
Upon power-up, the AK5702 should be reset by bringing the PDN pin = “L”. This ensures that all internal registers reset
to their initial values.
The ADC enters an initialization cycle that starts when the PMADAL or PMADAR or PMADBL or PMADBR bit is
changed from “0” to “1”. The initialization cycle time is 3088/fs=70.0ms@fs=44.1kHz when HPF1-0 bits are “00” (Table
37). During the initialization cycle, the ADC digital data outputs of both channels are forced to a 2’s complement, “0”.
The ADC output reflects the analog input signal after the initialization cycle is complete.
(Note) The recommendaion values in Table 36 are the shortest cycle time that the offset does not occur. The initial
data of ADC may have some offset by the external condition such as a use of microphone. If this offset isn’t small,
the longer initialization cycle should be selected as ADRSTbit=
“
0
”
in order to prevent the offset data. Or, do not
use the initial data of ADC.
HPFA/B1
bit
bit
bit
Cycle
fs=44.1kHz
3088/f
s
(Recommendation)
1552/f
s
Init Cycle
fs=22.05kHz
HPFA/B0
INCA/B
fs=11.025kHz
0
0
0
70.0ms
140.0ms
280.1ms
(default)
0
1
0
35.2ms
70.4ms
(Recommendation)
140.8ms
1
0
0
784/fs
17.8ms
35.6ms
71.1ms
(Recommendation)
1
1
0
3088/f
s
1552/f
s
Table 37. ADC Initialization Cycle
70.0ms
(Recommendation)
140.0ms
280.1ms
1
1
1
35.2ms
70.4ms
(Recommendation)
140.8ms
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK6002A | Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No |
| AK6002AF | Circular Connector; No. of Contacts:23; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-99 RoHS Compliant: No |
| AK6002AV | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| AK6004A | Circular Connector; No. of Contacts:26; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:16-26 RoHS Compliant: No |
| AK6004AF | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
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