TDA4650 Ver la hoja de datos (PDF) - Philips Electronics
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TDA4650
Philips Electronics
TDA4650 Datasheet PDF : 13 Pages
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Philips Semiconductors
Multistandard colour decoder, with
negative colour difference output signals
Preliminary specification
TDA4650
CHARACTERISTICS
All voltages are measured to GND (pin 11); VP = 12 V; chrominance input signal V15(p-p) = 100 mV (with 75 % colour bar
signal); 4 µs burst-blanking pulse and vertical blanking superimposed on super sandcastle pulse; Tamb = 25 °C;
measured in test circuit of Fig.1; unless otherwise specified.
SYMBOL
PARAMETER
VP
supply voltage range
IP
supply current
Chrominance part
Vi(p-p)
input signal (pin 15)
(peak-to-peak value)
Ri
input resistance (pin 15)
Ci
input capacitance (pin 15)
Demodulator part (PAL/NTSC)
V1(p-p)
colour difference −(R−Y) output
signal (peak-to-peak value)
V3(p-p)
colour difference −(B−Y) output
signal (peak-to-peak value)
V1/V3
ratio of colour difference signals
(R−Y)/(B−Y) for NTSC
V1/V1
m
ratio of PAL/NTSC signals
(R−Y)PAL/(R−Y)NTSC
signal linearity
V1,3
V1,3(p-p)
DC output level
H/2 ripple at CD outputs
residual carrier at CD outputs
(peak-to-peak value)
Z1,3
output impedance
Demodulator part (SECAM); note 1
V1(p-p)
V3(p-p)
V1,3
colour difference −(R−Y) output
signal (peak-to-peak value)
colour difference −(B−Y) output
signal (peak-to-peak value)
DC output level
H/2 ripple at CD outputs
V1,3(p−p)
residual carrier at CD outputs
(peak-to-peak value)
CONDITIONS
MIN.
10.8
50
20
7
−
at nominal phase of hue
control
at nominal phase of hue
control
at nominal phase of hue
control
at nominal phase of
hue control
V1(p-p) = 0.8 V − (R−Y)
V3(p-p) = 1.0 V − (B−Y)
proportional to VP
without colour bars
4.43 MHz
8.87 MHz
0.42
0.53
0.75
−
0.8
0.8
6.3
−
−
−
−
every second line blanked 0.83
every second line blanked 1.06
proportional to VP
6.3
without colour bars every −
second line blanked
4.43 MHz
−
8.87 MHz
−
TYP.
12.0
60
100
10
4
0.525
0.665
0.79
−
−
−
6.8
−
−
−
−
1.05
1.33
6.8
−
−
−
MAX.
13.2
80
UNIT
V
mA
400
mV
13
kΩ
5
pF
0.66
V
0.84
V
0.83
1
dB
−
−
7.3
V
10
mV
10
mV
30
mV
200
Ω
1.32
V
1.67
V
7.3
V
10
mV
30
mV
30
mV
March 1991
7
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