TDA4651 Datasheet, PDF (7/15 Pages) NXP Semiconductors – Multistandard colour decoder with negative colour difference output signals

Philips Semiconductors
Multistandard colour decoder with negative
colour difference output signals
Preliminary specification
TDA4651
CHARACTERISTICS
All voltages are measured to GND (pin 11); V_P = 12 V; chrominance input signal V_15(p−p) = 200 mV (with 75% colour bar
signal); T_amb = +25 °C; measured in test circuit of Fig.1; unless otherwise specified
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V_P
positive supply voltage
I_P
supply current
10.8 12
50
60
13.2 V
80
mA
Chrominance part
V_i(p−p)
R_I
C_I
input signal range (pin 15)
(peak-to-peak value)
input resistance (pin 15)
input capacitance (pin 15)
see note 1
20
200 400 mV
8.5 10
−
4
11.5 kΩ
5
pF
Demodulator part (PAL/NTSC)
V_1(p−p)
colour difference −(R−Y) output signal
(peak-to-peak value)
V_3(p−p)
colour difference −(B−Y) output signal
(peak-to-peak value)
V₁/V₃
V₁/V₁
m
spread of ratio of colour difference
signals (R-Y)/(B-Y)
spread of signal ratio PAL/NTSC
signal linearity
V_1,3
V_{1, 3(p−p)}
Z_1,3
DC output level
H/2 ripple at CD outputs
residual carrier at CD outputs
(peak-to-peak value)
output impedance
see note 2
PAL
442 525 624 mV
NTSC
370 440 523 mV
see note 2
PAL
559 665 791 mV
NTSC
468 557 662 mV
at nominal phase of
−
−
±5
%
hue control
at nominal phase of
−
−
±1
dB
hue control
V_1(p−p) = 0.8 V −(R−Y) 0.8
−
−
V_3(p−p) = 1.0 V −(B−Y) 0.8
−
−
proportional to V_P
6.3 6.8 7.3
V
without colour bars
−
−
10
mV
4.43 MHz
−
−
10
mV
8.87 MHz
−
−
30
mV
−
−
200 Ω
Demodulator part (SECAM) (see note 3)
V_1(p−p)
V_3(p−p)
V_{1, 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
V_1,3(p-p)
∆V1,3/∆V_P
∆V₁/∆T
∆V₃/∆T
residual carrier at CD outputs
(peak-to-peak value)
shift of demodulated f_o levels relative to
blanking level
every second line
blanked
every second line
blanked
proportional to V_P
without colour bars;
every second line
blanked
4.43 MHz
8.87 MHz
with supply voltage
with temperature
0.88 1.05 1.25 V
1.12 1.33 1.58 V
6.3 6.8 7.3
V
−
−
10
mV
−
−
30
mV
−
−
30
mV
−
−
3
mV/V
−
0.16 −
mV/K
−
−0.25 −
mV/K
August 1993
7