TDA4472-A Datasheet, PDF (4/14 Pages) TEMIC Semiconductors – Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sound (QPS) Processing

TDA4472-A
Pin Description
V_i,SIF1 1
V_i,SIF1 2
V_SW 3
GND ⁴
28 _Vi,SIF2
27 _Vi,SIF2
26 R_comp
25 NC
C_AGC 5
24 V_o,FM
V_i,VIF ⁶
23 V_S
V_i,VIF 7
22 V_AFC
C_AGC 8
21 _VVCO
GND ⁹
20 _VVCO
R_top ¹⁰
19 _Vsw
I_tun 11
18 LF
V_o,vid ¹²
17 _Cref
NC 13
16 _GND
NC 14
15 ^NC
94 8835
Figure 2. Pin configuration
TELEFUNKEN Semiconductors
Pin
1, 2
3
4
5
6, 7
8
9
10
11
12
13
14
15
16
17
18
19
20, 21
22
23
24
25
26
27, 28
Symbol
V_i, _SIF1
V_SW
GND
C_AGC
V_{i, VIF}
C_AGC
GND
R_top
I_tun
V_o,vid
NC
NC
NC
GND
C_ref
LF
V_SW
V_vco
V_AFC
V_S
V_O, _FM
NC
R_comp
V_{i, SIF2}
Function
SIF1 input (symmetrical)
Ground
Input selector switch
SIF-AGC (time constant)
VIF input (symmetrical)
VIF-AGC (time constant)
Ground
Take over point, tuner AGC
Tuner AGC output current
Video output
Not connected
Not connected
Not connected
Ground
Internal reference voltage
Loop filter
AFC switch
VCO circuit
AFC output
Supply voltage
Intercarrier output
Not connected
Offset compensation
SIF 2 input (symmetrical)
4 (14)
Rev. A1: 26.07.1995