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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： | 7/14页 |
| 文件大小： | 161K |
| 代理商： | TDA4472-MSD |
TDA4472
Rev. A2, 04-Dec-98
2 (14)
Block Diagram
AGC
(VIF)
Tuner
AGC
AGC
(SIF)
11
10
Tuner
27
28
3
1
2
5
SIF 2
SIF 1
VCO
+
phase shift
AFC
switch
Supply
VCO
21
2 0
18
Loop
filter
19
Offset
comp.
(optional)
26
FPL
L
0
°
90
°
VIF amp
6
7
8
VIF
CAGC
Take over point
Input switch
CAGC
22
12
4,9,16
23
VS
17
CRef
Intercarrier
(FM / NICAM)
24
FM det.
SIF amp
AFC
Video
94 8719
Video
det.
Figure 1. Block diagram
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