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.
CVBS buffer amplifier (pins 12 and 13)
R13
C13
Vo CVBS
input resistance
input capacitance
typical CVBS output signal on pin 14
(peak-to-peak value)
note 4
−
3.3
−
2
−
2
CVBS output level
upper video clipping −
4.25
lower video clipping −
0.3
sync level
−
1.35
I12
output current
R12
output resistance
Gv
voltage gain
B
−3 dB video bandwidth
RR
ripple rejection on pin 12
DC and AC
−
−
−
−
note 4
6.5 7
C14 < 20 pF
tbn 14
fripple = 70 Hz; note 3 tbn
35
Measurements from IF input to CVBS output (pin 12)
Vo CVBS
typical CVBS output signal on pin 12
(peak-to-peak value)
Fig.10
1.7 2
∆Vo
deviation of CVBS output signal at B/G 50 dB gain control −
−
30 dB gain control −
0.1
∆G
differential gain
∆ϕ
differential phase
10 to 90% modulation −
2
10 to 90% modulation −
2
tiltH
horizontal tilt
B
−2 dB video bandwidth
S/N
signal-to-noise ratio
CL < 20 pF
note 5; Fig.5
−
0.7
tbn 12
−
58
α1.1
intermodulation at “blue”, note 6
intermodulation at “yellow”
f = 1.1 MHz; Fig.8
56
58
f = 1.1 MHz
53
56
α3.3
intermodulation at “blue”
intermodulation at “yellow”
f = 3.3 MHz
f = 3.3 MHz
62
−
60
−
α1H
α2H
αspur
residual vision carrier (RMS value)
suppression of spurious video signal
harmonics
fundamental wave −
1
second harmonic
−
1
transformer; Fig.4
22
26
RR
ripple rejection on pin 12
fripple = 70 Hz; note 3 tbn
30
AGC detector (pin 18)
Tresp
response to an increasing amplitude step
of 50 dB in input signal
−
1
response to a decreasing amplitude step
of 50 dB in input signal
−
150
V18
gain control voltage on capacitor
I18
peak charging current (peak value)
charging current
full gain range
1.5 −
−
−2
−
−0.5
discharging current
−
11
MAX. UNIT
−
kΩ
−
pF
−
V
−
V
−
V
−
V
±1
mA
10
Ω
7.5
dB
−
MHz
−
dB
2.3
V
0.5
dB
−
dB
5
%
5
o
1.5
%
−
MHz
−
dB
−
dB
−
dB
−
dB
−
dB
10
mV
10
mV
−
dB
−
dB
10
ms
300
ms
4
V
−
mA
−
mA
−
µA
January 1992
8
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