TDA9144 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
TDA9144
Philips Electronics
TDA9144 Datasheet PDF : 44 Pages
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Philips Semiconductors
I2C-bus controlled, alignment-free PAL/NTSC/SECAM
decoder/sync processor with PALplus helper demodulator
Preliminary specification
TDA9144
handbook, full pa1g.e0w0idth
white level reference
1.00
(V)
line 623
PALplus CVBS in
(V)
20 µs
10.5 µs
10 µs
0.30
0.30
0
input
signals
1.00
0.80
(V)
0.45
0.30
0.15
0
0
32 µs
line 23
1.00
(V)
black helper reference
level
burst −U phase
reference
0.45
0.30
PALplus signalling bits
41 µs
51 µs
0.15
0
10.83 µs
1.00
line 623
(V)
0.60
white level reference
1.00
(V)
Yout (pin 12)
0.60
Y black
black set-up
0.20 0.4 µs
0.20
0
black
black level offset (1)
0
(clamp level)
1.00
(V)
0.77
output 0.60
signals
line 23
1.00
(V)
helper
set-up
B
0.60
,,,,,,,,,,,,,,,,,,,,
EBU colour bar
10.5 µs
52 µs
max. modulated helper line
,,,,,,,, 800
mV
,,,,,,,,,,,,,, (2)
EBU colour bar
with black set-up
686 mV
demodulated helper
area limits
0.20
0.4 µs
demodulated
0.20
0
PALplus signalling bits
helper reference
0
0.15 µs
52 µs
0.65 µs
1.00
line 22 reference line
mid-grey offset = A − B(3)
(4)
delay CLP to set up
baseband helper line with
black and helper set-up
(V)
helper set-up
MBG904
(mid-grey)
0.60
212 LLC pulses
A (1) See Y output parameter Vos in Section “Characteristics”
0.20 11.2 µs
30.8 µs
black set-up
22 µs
151 LLC pulses
52 µs
(2) See demodulated helper parameter td in Section “Characteristics”
(3) See demodulated helper parameter Vos in Section “Characteristics”
(4) See CLP output/HA output parameter td in Section “Characteristics”
0
0.15 µs
0.65 µs
Figures drawn when using subaddress 8A and an Ydelay of ∼440 ns.
LLC frequency equals 6.875 MHz; 440 LLC pulses per horizontal line.
Demodulated helper shown when using an external 8.8 notch filter.
Fig.5 PALplus CVBS input and Y output signals.
1996 Jan 17
10
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