TDA3853T Datasheet, PDF (8/18 Pages) NXP Semiconductors – TV IF amplifier and demodulator with TV-identification

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
V_{o 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
G_v
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
f_ripple = 70 Hz; note 3 tbn
35
Measurements from IF input to CVBS output (pin 12)
V_{o CVBS}
typical CVBS output signal on pin 12
(peak-to-peak value)
Fig.10
1.7 2
∆V_o
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
tilt_H
horizontal tilt
B
−2 dB video bandwidth
S/N
signal-to-noise ratio
C_L < 20 pF
note 5; Fig.5
−
0.7
tbn 12
−
58
α_1.1
intermodulation at “blue”, note 6
intermodulation at “yellow”
f = 1.1 MHz; Fig.8
56
58
f = 1.1 MHz
53
56
α_3.3
intermodulation at “blue”
intermodulation at “yellow”
f = 3.3 MHz
f = 3.3 MHz
62
−
60
−
α_1H
α_2H
α_spur
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
f_ripple = 70 Hz; note 3 tbn
30
AGC detector (pin 18)
T_resp
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