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参数资料
| 型号： | TDA4472-MSD |
| 厂商： | TEMIC SEMICONDUCTORS |
| 元件分类： | 接收器 |
| 英文描述： | FM, AUDIO/VIDEO DEMODULATOR, PDIP28 |
| 封装： | SDIP-28 |
| 文件页数： | 9/14页 |
| 文件大小： | 161K |
| 代理商： | TDA4472-MSD |
TDA4472
Rev. A2, 04-Dec-98
4 (14)
Pin Description
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Vi,SIF1
GND
CAGC
Vi,SIF1
VSW
Vi,VIF
CAGC
GND
Rtop
Itun
Vo,vid
NC
Vi,SIF2
Rcomp
Vo,FM
VS
VAFC
VVCO
Vsw
Cref
GND
LF
94 8835
NC
Figure 2. Pinning
Pin
Symbol
Function
1, 2
Vi, SIF1
SIF1 input (symmetrical)
3
Vsw
Input selector switch
4, 9, 16
GND
Ground
5
CAGC
SIF-AGC (time constant)
6, 7
Vi, VIF
VIF input (symmetrical)
8
CAGC
VIF-AGC (time constant)
10
Rtop
Take over point, tuner AGC
11
Itun
Tuner AGC output current
12
Vo,vid
Video output
13
NC
Not connected
14
NC
Not connected
15
NC
Not connected
17
Cref
Internal reference voltage
18
LF
Loop filter
19
Vsw
AFC switch
20, 21
VVCO
VCO circuit
22
VAFC
AFC output
23
VS
Supply voltage
24
VO, FM
Intercarrier output
25
NC
Not connected
26
Rcomp
Offset compensation
27, 28
Vi, SIF2
SIF 2 input (symmetrical)
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