tda4472-msd ATMEL Corporation, tda4472-msd Datasheet - Page 2

• Manufacturer Part Number: tda4472-msd
• Description: Video-if Quasi Parallel Sound Processing
• Manufacturer: ATMEL Corporation

Block Diagram
TDA4472
Take over point
Tuner
Input switch
2 (14)
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
Ï Ï
Ï
Ï
Ï
Ï
Ï Ï
Ï
Ï
Ï
Offset
comp.
VIF amp
(VIF)
Tuner
AGC
AGC
26
FPL
L
Ï
Ï
Loop
filter
SIF amp
Video
AGC
(SIF)
det.
18
Figure 1. Block diagram
Ï
Ï
90
0
2 0
Ï Ï
Ï Ï
VCO
FM det.
phase shift
VCO
+
Ï
Ï
21
Supply
Ï Ï
Ï Ï
Ï Ï
Ï Ï
AFC
94 8719
switch
19
AFC
Rev. A2, 04-Dec-98
Ï
Ï
Ï
Ï
Ï
Ï Ï
Ï
Ï
12
17
22
4,9,16
23
24
(FM / NICAM)
C
Intercarrier
Ref
Ï Ï
Ï Ï
AFC
Video
V
S