參數(shù)資料
型號: AK4671EG
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/RCV/HP-AMP
中文描述: 立體聲編解碼器麥克風/垃圾車/惠普腺苷
文件頁數(shù): 58/164頁
文件大?。?/td> 1792K
代理商: AK4671EG
[AK4671]
MS0666-E-00
2007/10
- 58 -
MIC Gain Amplifier
The AK4671 has a gain amplifier for microphone input. The gain of MIC-Amp Lch and Rch is independently selected by
the MGNL3-0 and MGNR3-0 bits (
Table 19
). The typical input impedance is 42k
Ω
(typ)@MGNL/R0 bits = “0” or
30k
Ω
(typ)@MGNL/R0 bits = “1”.
MGNL3
MGNR3
MGNR2
MGNR1
MGNR0
0
0
0
0
1
0
0
0
2
0
0
1
3
0
0
1
4
0
1
0
5
0
1
0
6
0
1
1
7
0
1
1
8
1
0
0
9
1
0
0
10
1
0
1
11
1
0
1
12
1
1
0
13
1
1
0
14
1
1
1
15
1
1
1
Table 19. Mic Input Gain (N/A: Not available)
Mode
MGNL2
MGNL1
MGNL0
Input Gain
Input Resistance
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
N/A
12dB
9dB
6dB
3dB
0dB
+3dB
+6dB
+9dB
+12dB
+15dB
+18dB
+21dB
+24dB
+27dB
+30dB
N/A
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
42k
Ω
30k
Ω
(default)
相關PDF資料
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