TDA4474 Datasheet, PDF (8/17 Pages) TEMIC Semiconductors – Multistandard Video-IF and Quasi Parallel Sound Processing

TDA4474
TELEFUNKEN Semiconductors
Electrical Characteristics
V_s = +5V, T_amb = +25°C; reference point pin 4 (9 ,16), unless otherwise specified
ÁÁÁÁ ^Parameters
Standard switch:
Á Test Conditions / Pins
Pin 15
Symbol Min.
Typ.
Control voltage for mode 1:
neg. modulated video–IF
signals
and FM/NICAM sound
see note 5
V_sw1
2.0
Control voltage for mode 2:
pos. modulated video–IF
signals
and AM / L–NICAM sound
V_sw2
0
Switching current
I_sw
100
ÁÁÁ ^{AFC output:}
Control slope
Pin 24
I/_f
0.7
Á ÁÁ ^{Frequency drift by temper- related to the picture carrier}
ature
requency
0.25
Output voltage upper
V_AFC V_s–0.4
limit
ÁÁÁÁÁÁÁ ^{lower limit}
Output current
AFC switch (pin 21)
Á^IAFC
Á^0.2
Control voltage: AFC
V_sw
0
”off”
1.5
AFC curve rising see note 6
3.5
AFC curve falling
Switching current
ÁÁÁÁÁÁÁÁÁÁÁ _{L’ and VIF input select r sw tch}
Á ÁÁÁ^Isw
Pin 16 see note 7
Á¹⁰⁰
Control voltage: VIF standard switch in mode 1
V_sw1
0
input 2 active
(negative modulation)
3.4
VIF input 1 active
Control voltage: L’– standard switch in mode 2
V_sw2
0
ÁÁ VCO frequency
L –VCO frequency
Switching current
(positive modulation)
V_sw = 0
3.4
I_sw
Max. Unit
V_s
V
0.8
V
A
Á^A/kHz
0.6
%
V
0.4
Á^V
mA
0.8
V
2.5
V
V_s
V
A
3.0
V
4.5
V
3.0
V
4.5
V
700
A
8 (17)
Preliminary Information
Rev. A1: 17.08.1995