TDA4472-A Datasheet, PDF (7/14 Pages) TEMIC Semiconductors – Video-IF (VIF) with FPLL Demodulation and Quasi Parallel Sound (QPS) Processing

TELEFUNKEN Semiconductors
TDA4472-A
Parameters
Test Conditions / Pins Symbol Min.
Typ.
Max.
Unit
Output voltage
upper limit
lower limit
V_AFC V_S-0.4
V
0.4
V
Output current
AFC switch
I_AFC
±0.2
mA
Pin 19
Control voltage:
AFC ”off”
AFC ”on”
Switching current
SIF inputs
see note 6
V_SW
0
3.5
0.8
V
V_S
V
I_SW
±100
mA
Pin 1-2, 27-28
Input sensitivity
output signal
v_in
(RMS value)
at pin 24/25: –3 dB
80
120
mV
Input impedance
Input capacitance
SIF – AGC
Pin 5
see note 1
see note 1
R_in
1.2
kW
C_in
2
pF
IF gain control range
AGC capacitor
Intercarrier output-FM
G_v
60
65
dB
G_AGC
10
mF
Pin 24
see note 7
DC output voltage
Output resistance
Sound IF output voltage,
RMS value (5.5 MHz out-
put voltage)
see note 1
v_in = 10 mV
V_DC
2
V
R_out
150
W
v_out
250
mV
Weighted signal to noise ra-
tio: (CCIR 468)
Ref. signal:
v_in = 10 mV,
FM dev. = ±27 kHz,
f_mod = 1 kHz,
tested with the double
FM demod. U2860B,
B/G modulated VIF signal
Black screen: Channel 1/2
S/N
60/58
dB
Grid pattern: Channel 1/2
S/N
54/52
dB
Grey screen 50%: Channel
S/N
60/57
dB
1/2
Ripple rejection
see note 1 /pin 23/pin24
RR
35
dB
SIF input selector switch
Pin 3
Control voltage
input 1 active
input 2 active
see note 8
V_SW
2.0
0
V_S
V
0.8
V
Switching current
I_SW
±100
mA
Rev. A1: 26.07.1995
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