tda4472-a ETC-unknow, tda4472-a Datasheet - Page 2

• Manufacturer Part Number: tda4472-a
• Description: Video-if With Fpll Demodulation Quasi Parallel Sound Processing
• Manufacturer: ETC-unknow

TDA4472-A
Take over point
Tuner
2 (14)
Input switch
SIF 1
SIF 2
Ï
VIF
C
C
AGC
AGC
10
11
27
28
(optional)
6
7
8
3
1
2
5
Ï Ï
Ï
Ï
Ï
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Ï
Ï
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Ï
Ï
Ï
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Ï
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Offset
comp.
VIF amp
(VIF)
Tuner
AGC
AGC
26
FPL
L
Ï
Loop
filter
SIF amp
Video
AGC
(SIF)
det.
18
Figure 1. Block diagram
Ï
90
0
2 0
Ï Ï Ï
VCO
FM det.
phase shift
VCO
+
21
TELEFUNKEN Semiconductors
Supply
Ï Ï
Ï Ï
AFC
94 8719
switch
19
AFC
Rev. A1: 26.07.1995
Ï
Ï
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Ï
Ï
Ï
Ï
12
17
22
23
4,9,16
24
(FM / NICAM)
C
Intercarrier
Ref
Ï Ï
AFC
Video
V
S