TDA3504 datasheet(7/12 Pages) PHILIPS

7 / 12 page

1996 Jan 09

Philips Semiconductors

Product speciﬁcation

Video control combination circuit

TDA3504

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.

Gv1-15;

Gv19-14

voltage gain with respect to colour

difference inputs (pins 14 and 15)

1-15; α19-14

frequency response of colour

difference paths

f=0to2MHz

−−

3dB

Gv19-10;

Gv20-9; Gv1-8

voltage gain with respect to inserted

signals

19-10; α20-9;

α1-8

frequency response of inserted

signal paths

f=0to10MHz

−−

3dB

∆t

19, 20, 1

difference in transition times

between R, G and B channels

−

015

delay time between signal switching

and signal insertion

−25

−

+25

∆G

19, 20, 1

difference in gain between normal

and signal insertion mode

−−

Sandcastle pulse detector (pin 6)

the following amplitudes are

required for separating the various

pulses

horizontal and vertical

blanking; notes 7 and 8

2.1

2.5

2.9

horizontal; note 7

4.1

4.5

5.0

clamping; notes 7 and 9

7.6

8.0

12.0

no keying; note 7

−−

1.0

input current

LOW

−−

−110

µA

delay of leading edge of clamping

pulse

−

0.5

−µs

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

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