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TDA3504 Datasheet PDF : 12 Pages
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Philips Semiconductors
Video control combination circuit
Product specification
TDA3504
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Gv1-15;
Gv19-14
α1-15; α19-14
Gv19-10;
Gv20-9; Gv1-8
α19-10; α20-9;
α1-8
∆t19, 20, 1
td
∆G19, 20, 1
voltage gain with respect to colour
difference inputs (pins 14 and 15)
frequency response of colour
difference paths
voltage gain with respect to inserted
signals
frequency response of inserted
signal paths
difference in transition times
between R, G and B channels
delay time between signal switching
and signal insertion
difference in gain between normal
and signal insertion mode
f = 0 to 2 MHz
f = 0 to 10 MHz
11 14
−−
12 14
−−
−0
−25 −
−−
17
dB
3
dB
16
dB
3
dB
15
ns
+25 ns
10
%
Sandcastle pulse detector (pin 6)
V6
the following amplitudes are
horizontal and vertical
2.1 2.5
2.9
V
required for separating the various blanking; notes 7 and 8
pulses
horizontal; note 7
4.1 4.5
5.0
V
clamping; notes 7 and 9
7.6 8.0
12.0 V
no keying; note 7
−−
1.0
V
II
input current
LOW
td
delay of leading edge of clamping
pulse
−−
− 0.5
−110 µA
−
µs
Notes
1. Maximum value 110 mA after warm-up.
2. Values are proportional to the supply voltage.
3. Matrixed according to equation V(G−Y) = −0.51V−(R−Y) − 0.19V−(B−Y).
4. Clipping due to internal signal limitation may occur when the Y input is greater than nominal and maximum contrast
and minimum brightness.
5. When V7-18 < 0.4 V during clamping time, the black levels of the inserted RGB signals are clamped on the black
levels of the internal RGB signals.
When V7-18 > 0.9 V during clamping time, the black levels of the inserted RGB signals are clamped on an internal
DC voltage (correct clamping of the external RGB signals is possible only when they are synchronous with the
sandcastle pulse).
6. Internal signal limitation is allowed to start at 5.5 V after warm-up time.
7. The sandcastle pulse is compared with three internal thresholds (proportional to VP) and the given levels separate
the various pulses.
8. Blanked to ultra-black (−25%).
9. Pulse duration ≥3.5 µs.
1996 Jan 09
7
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