TDA4472-M Datasheet, PDF (2/14 Pages) TEMIC Semiconductors – Video-IF and Quasi Parallel Sound Processing

TDA4472-M
Block Diagram
Offset
comp.
(optional)
Loop
filter
VCO
ÏÏ_AFC
ÏÏswitch
Ïϲ⁶
FPL
L
VIF
VIF amp
6
ÏÏÏ₇
Ï ^{CAGC 8}
AGC
(VIF)
Tuner
11
ÏÏÏ₁₀
Tuner
AGC
Take over point
SIF 2
ϲ⁷
ϲ⁸
Ï ^{Input switch}
ϳ
SIF 1
152_{ÏÏÏÏÏÏ}
C_AGC
ÏÏ^{18 2}ÏÏ⁰ ÏÏ Ïϲ¹
0°
VCO
+
90° _{phase shift}
Video
det.
ÏÏÏϹ⁹
Ï ^AFC
22
AFC
Ϲ²
Video
ÏÏ^4,9,16
SIF amp
FM det.
Supply
23
ÏÏÏ₁₇
ÏÏÏÏ_VS
C_Ref
24
ÏÏ Intercarrier
(FM / NICAM)
AGC
(SIF)
94 8719
Figure 1. Block diagram
2 (14)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 15-Oct-96