TDA4474 Datasheet, PDF (9/17 Pages) TEMIC Semiconductors – Multistandard Video-IF and Quasi Parallel Sound Processing

TELEFUNKEN Semiconductors
TDA4474
Electrical Characteristics
V_s = +5V, T_amb = +25°C; reference point pin 4 (9, 18), unless otherwise specified
ÁÁ ^Parameters
SIF inputs:
Á Á Test Conditions / Pins Symbol
Pins 1 2, 29 30
Min.
Typ.
Max.
Unit
ÁÁÁÁÁÁÁÁÁ ^{Input sensitivity, RMS}
value
Input impedance
Input capacitance
SIF – AGC:
output signal: –3dB
v_in
ÁÁÁÁ ^{ee note 1}
see note 1
R_in
C_in
Pin 5
80
120
V
12
k
2
pF
IF gain control range
AGC capacitor
ÁÁÁÁ _{Intercarrier outpu}
ÁÁÁ Á _{DC output voltage}
ÁÁÁÁÁÁÁÁÁ _{Output resistance}
ÁÁ ^{ee note 1}
G_v
ÁÁ^CAGC
Pin 26 s e note 8
ÁÁÁ Á_VDC
ÁÁÁ_Rout
60
65
10
2
150
dB
F
V
Sound IF output voltage, v_in = 10 mV
v_out
300
mV
RMS value
5 5 MHz output voltage
Weighted signal to noise ra- Ref .signal:
tio:
(CCIR 468)
v_in =10 mV;
FM dev. = 27 kHz
f_mod = 1 kHz;
tested with the double FM
demod. U2860B;
B/G mod. VIF signal
Black screen: Channel 1/2
S/N
60/58
dB
Grid pattern: Channel 1/2
S/N
54/52
dB
ÁÁ Grey screen 50%:
Channel 1/2
Á^S/N
Á^60/57
Á^dB
Ripple rejection,
Pins 25, 26 see note 1
RR
35
dB
Rev. A1: 17.08.1995
Preliminary Information
9 (17)