- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385093 > AK4633 (Asahi Kasei Microsystems Co.,Ltd) 16-Bit Mono CODEC with ALC & MIC/SPK-AMP PDF資料下載
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)： | 37/82頁 |
| 文件大?。?/td> | 688K |
| 代理商： | AK4633 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁
ASAHI KASEI
[AK4633]
MS0447-E-03
2006/04
- 37 -
System Reset
Upon power-up, reset the AK4633 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 PMADC bit is changed from
“
0
”
to
“
1
”
. The initialization cycle
time is selected by ADRST bit (Table 17). During the initialization cycle, the ADC digital data outputs of both channels
are forced to a 2's compliment,
“
0
”
. The ADC output reflects the analog input signal after the initialization cycle is
complete. The DAC does not require an initialization cycle.
(Note) The initial data of ADC has the offset data that depends on the condition of the microphone and the cut-off
frequency of HPF. 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.
Init Cycle
ADRST bit
Cycle
1059/fs
291/fs
Table 17. Initialization cycle of ADC
fs = 8kHz
132.4ms
36.4ms
fs = 16kHz
66.2ms
18.2ms
fs = 48kHz
22.1ms
6.1ms
0
1
MIC Gain Amplifier
The AK4633 has a Gain Amplifier for Microphone input. This gain is selected by MGAIN2-0 bits. The typical input
impedance is 30k
.
MGAIN2 bit
MGAIN1 bit
MGAIN0 bit
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
Table 18. Input Gain
Input Gain
0dB
+20dB
+26dB
+32dB
+6dB
+10dB
+14dB
+17dB
Default
相關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 |
相關代理商/技術參數(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。