TDA4650 Datasheet, PDF (8/13 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
TDA4650
SYMBOL
PARAMETER
CONDITIONS
Demodulator part (SECAM) (continued); note 1
∆V_1,3/∆V_P
∆V₁/∆T
∆V₃/∆T
shift of blanking levels relative to
demodulated f_o levels
Hue control part
φ
phase shift of reference carrier V₁₇ = 2 V
relative to phase at V₁₇ = 3 V
phase shift of reference carrier V₁₇ = 3 V
phase shift of reference carrier
relative to phase at V₁₇ = 3 V
V₁₇ = 4 V
V₁₇
internal bias voltage
switching voltage for oscillator burst OFF; colour ON
adjustment
switching voltage for forced
colour ON
burst ON; colour ON
R₁₇
input resistance
Reference oscillator (PLL); note 2
R_19,21
C_19,21
f_c
input resistance
input resistance
catching range
at 4.43 MHz
at 3.57 MHz
Identification part
switching voltages for chrominance filters and crystals:
at pin 28 for PAL
at pin 27 for SECAM
at pin 26 for NTSC (3.58 MHz)
at pin 25 for NTSC (4.43 MHz)
V_{28 to 25}
switching voltages
control voltage OFF state
control voltage ON state;
during scanning
control voltage ON state;
internal forced
control voltage ON state;
external forced
I_{28 to 25}
t_d
output currents
delay time for system hold
delay time for colour ON
delay time for colour OFF
t_s
scanning time for each standard note 3
MIN.
−
−
−
−30
−
30
−
0
5.5
3.8
−
−
± 400
± 330
−
2.35
5.6
9.0
−
2
2
0
−
TYP.
−
0.16
−0.25
−40
0
40
3
−
−
5.0
350
−
−
−
0.05
2.45
5.8
-
−
−
−
−
4
MAX. UNIT
3
mV/V
−
mV/K
−
mV/K
−
deg
±5
deg
−
deg
−
V
0.5
V
V_P
V
6.2
kΩ
−
Ω
10
pF
−
Hz
−
Hz
0.5
V
2.55
V
6.0
V
V_P
V
−3
mA
3
cycles
3
cycles
1
cycles
−
cycles
March 1991
8