TDA4651 Datasheet, PDF (8/15 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
SYMBOL
PARAMETER
CONDITIONS
Hue control part
φ
phase shift of reference carrier relative to V₁₇ = 2 V
phase at V₁₇ = 3 V
phase shift of reference carrier
V₁₇ = 3 V
phase shift of reference carrier relative to V₁₇ = 4 V
phase at V₁₇ = 3 V
V₁₇
internal bias voltage
see note 4
switching voltage for oscillator adjustment burst OFF; colour ON
switching voltage for forced colour ON
hue OFF; colour ON
R₁₇
input resistance
Reference oscillator (PLL) (see note 5)
R_19,21
C_19,21
f_c
input resistance
input capacitance
catching range
at 4.43 MHz
at 3.57 MHz
Identification part (see note 6)
V_{25 to 28}
switching voltages
I_{25 to 28}
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
Super sandcastle pulse detector (see note 8)
V₂₄
input pulse amplitude
input voltage pulse levels to separate
V and H blanking pulses
voltage pulse amplitude
input voltage pulse levels to separate
H blanking pulse
voltage pulse amplitude
input voltage pulse levels to separate
burst gating pulse
input voltage
I₂₄
input current
control voltage OFF
state
control voltage ON
state; during scanning
control voltage ON
state; internal forced
control voltage ON
state; external forced
see note 7
pulse ON
pulse OFF
pulse ON
pulse OFF
pulse ON
pulse OFF
during line scan
during line scan
MIN. TYP. MAX. UNIT
−30 −40 −
deg
−
0
±5
deg
30
40
−
deg
−
3
0
−
5.5 −
4.25 5.0
−
V
0.5
V
V_P
V
5.75 kΩ
−
350 −
Ω
−
−
10
pF
±400 −
−
Hz
±330 −
−
Hz
−
0.05 0.5
V
2.35 2.45 2.55 V
5.6 5.8 6.0
V
9.0 −
−
−
2
−
2
−
0
−
−
4
V_P
V
−3
mA
3
cycles
3
cycles
1
cycles
−
cycles
7.7 −
V_P
V
1.3 1.6 1.9
V
1.1 1.4 1.7
V
2.0 2.5 3.0
V
3.3 3.6 3.9
V
3.1 3.4 3.7
V
4.1 4.5 4.9
V
6.2 6.6 7.0
V
6.0 6.4 6.8
V
−
−
1.0
V
−
−
−100 µA
August 1993
8