TDA4556 View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TDA4556 Datasheet PDF : 11 Pages
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Philips Semiconductors
Multistandard decoder
PARAMETER
Demodulator part (SECAM)
Colour difference signals (see note 3)
output voltage (proportional to V13-9)
(peak-to-peak value)
−(R-Y) signal (pin 1)
−(B-Y) signal (pin 3)
Ratio of colour difference output signals
(R-Y)/(B-Y)
Residual carrier (4 to 5 MHz)
(peak-to-peak value)
Residual carrier (8 to 10 MHz)
(peak-to-peak value)
H/2 ripple
at (R-Y) (B-Y) outputs (pins 1 and 3)
(peak-to-peak value)
with fo signals
DC output voltage
Shift of inserted levels relative to levels
of demodulated fo frequencies (IC only)
HUE control (NTSC)/service switch
Phase shift of reference carrier
at V17-9 = 2 V
at V17-9 = 3 V
at V17-9 = 4 V
Input resistance
Service position
Switching voltage (pin 17)
burst OFF; colour ON
(for oscillator adjustment)
HUE control OFF; colour ON
(for forced colour ON)
Crystal oscillator (pin 19)
For double colour subcarrier frequency
input resistance
lock-in-range
referred to subcarrier frequency
Product specification
TDA4557
SYMBOL MIN.
TYP.
MAX. UNIT
V1(p-p)
V3(p-p)
V1/3-9
V1,3(p-p)
V1,3(p-p)
−
1.05
−
V
−
1.33
−
V
−
0.79 (1) ± 10% −
−
20
30
mV
−
20
30
mV
V1,3(p-p)
−
V1,3-9
7.0
∆V/∆T(R-Y) −
∆V/∆VP
−
−φ
30
φ
−
+φ
30
R17-9
−
−
30
mV
7.7
8.4 V
0.5
0.6 mV/K
8
−
mV/V
40
−
deg
0
−
deg
40
−
deg
5
−
kΩ
V17-9
V17-9
R19-9
∆f
0
−
0.5 V
6
−
VP
V
−
± 400
350
−
Ω
−
−
Hz
March 1991
6
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