TDA4474 Datasheet, PDF (6/17 Pages) TEMIC Semiconductors – Multistandard Video-IF and Quasi Parallel Sound Processing

TDA4474
Thermal Resistance
ÁÁÁ ^Parameters
Thermal resistance:
junction–ambient when soldered to PCB
TELEFUNKEN Semiconductors
ÁÁ^Symbol
Á^Value
Á^Unit
R_thja
55
K/W
Electrical Characteristics
V_s = +5V, T_amb = +25°C; reference point pin 4 (9, 18), unless otherwise specified
Parameters
ÁÁÁ _{DC–supply:}
ÁÁÁÁ _{Supply voltage}
ÁÁÁÁ _{Supply current:}
ÁÁÁ _{VIF–inputs:}
ÁÁÁ ÁÁÁ ÁÁ Á Test Conditions / Pins Symbol Min
Pin 25
Á^Typ
V_s
45
5.0
I_s
75
Pins 6–7, 10–11
Input sensitivity, RMS
value
Á_{Input impedance}
ÁÁÁÁ _{Input capacitance}
ÁÁÁÁ _{VIF–AGC:}
ÁÁ _{IF gain control range}
Á Á _{AGC capacitor at Pin 8}
for FPLL locked
ÁÁÁÁ ^{ee note 1}
see note 1
ÁÁ ^{video output: 2 V}
v_in
Á^Rin
Á ^Cin
Pins 8 17
G_v
C_AGC
60
80
12
2
65
22
Black level capacitor at
ÁÁÁ ^{Pin 17}
Tuner AGC:
Available tuner–AGC
Á^current
Allowable output voltage
C_BL
100
Á ÁÁÁ ^{Pins 12 3 see note 3}
I_tun
1
2
V_out
03
IF slip – tuner AGC
ÁÁÁ ^{current Itun:}
0% to 90%
G_IF
8
IF input signal for
R_top = 10 k
v_in
minimum
(V_top= 2.5 V)
take over point
IF input signal for
R_top = 0
v_in
40
ÁÁÁ ^maximum
take over point
Variation of the take over
(V_{top =} 0.8 V)
T_amb = 55°C
v_in
2
point
by temperature
ÁÁÁ _{FPLL and VCO:}
ÁÁÁÁÁÁÁÁÁÁ _{ÁÁÁÁÁÁÁÁÁÁ Max. oscillator frequency}
VIF–AGC: G_v = 46 dB
Pins 20 2, 23, 28
or carrier generation
f_vco
70
Vision carrier capture range f_vco = 38.9 MHz
f_cap
1.5
2
C_vco = 6.8 pF
Oscillator drift
see note 3
f/_T
(free runing)
T_amb = 55°C,
as function of temperature C_vco = 6.8 pF,
f_vco = 38.9 MHz
Á Á ^{Max. Unit}
Á9.0
85
V
Á^mA
120
µV
Á^k
pF
Á^dB
µF
nF
4
mA
13 5
V
10
dB
4
mV
mV
3
dB
Á^MHz
MHz
–0.3
%
6 (17)
Preliminary Information
Rev. A1: 17.08.1995