TDA3853T Просмотр технического описания (PDF) - Philips Electronics
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TDA3853T Datasheet PDF : 18 Pages
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Philips Semiconductors
TV IF amplifier and demodulator with
TV-identification
Preliminary specification
TDA3853T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
Tuner AGC (pin 19)
Vi
IF input signal for minimum starting point input at pins
of tuner take over (RMS value)
1-20
IF input signal for maximum starting point input at pins
of tuner take over (RMS value)
1-20
∆GIF
IF gain variation
maximum ∆IAGC
= 1 mA
V19
∆V19
I19
permitted output voltage
from external
saturation voltage
I19 = 1 mA
variation of take over point by temperature ∆T = 60 °C
sink current
no tuner gain
reduction; Fig.7
maximum tuner gain
reduction
RR
ripple rejecting on pin 19
fripple = 70 Hz; note 3
TV identification and black level detector (pins 5, 6 and 3)
Vi
IF input signal on pins 1-20
(RMS value)
TV identified
C/N
carrier-to-noise ratio at IF input
TV identified; note 7
V14
minimum sync amplitude in relation to
identification on
typical sync
V6
output voltage for TV identified
output voltage for TV not identified
I7 = 500 µA
I6
output current (sink)
no ident
allowed leakage current (source)
ident
V5
voltage for “identification on”
2.2 µF capacitor on
pin 5
Ileak
permitted leakage current (capacitor pin 5)
tp V
vertical pulse duty cycle for TV identified tsync/tvertical
Tracking generator, AFT (pins 7 and 8)
note 8
V8
maximum output voltage
minimum output voltage
note 9; Fig.9
permitted output voltage
I8
sink output current
source output current
offset output current
S
control steepness
∆ϕ
phase offset spread for 38.9 MHz
∆Ig/∆f; note 9
note 10
V7
input voltage for TRSW
tracking off; Table 1
(independent of other mode switches)
tracking on
−
−
50
−
−
3
−
−
−
0.2
−
2
−
0
1.5 1.8
tbn 20
−
50
−
10
−
30
4.5 4.95
−
0.1
−
500
−
−
−
2.6
−
−
4
8
4.3 −
0.3 −
−
−
160 180
−160 −180
−
−
−
2
−
−
0
−
open-circuit
MAX. UNIT
1
mV
−
mV
6
dB
13.2 V
0.5
V
3
dB
0.1
µA
2.0
mA
−
dB
−
µV
−
dB
−
%
VP
V
0.4
V
−
µA
−1
µA
−
V
3
µA
25
10−3
4.7
0.7
VP
220
−220
±20
−
±4
0.8
V
V
V
µA
µA
µA
µA/kHz
o
V
V
January 1992
9
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