EL1883IS 데이터 시트보기 (PDF) - Intersil

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EL1883IS

Sync Separator with Horizontal Output

Intersil 

EL1883

Typical Performance Curves (Continued)

JEDEC JESD51-3 LOW EFFECTIVE THERMAL

CONDUCTIVITY TEST BOARD

1.2

1

0.8 781mW

0.6

0.4

θJA =16S0O°C8/W

0.2

0

0

25

50

75 85 100 125 150

TEMPERATURE (°C)

FIGURE 11. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE

SIGNAL 1a. COMPOSITE VIDEO INPUT, FIELD ONE

SIGNAL 1b. COMPOSITE SYNC OUTPUT, PIN 1

SIGNAL 1c. VERTICAL SYNC OUTPUT, PIN 3

tVS

SIGNAL 1d. BACK PORCH OUTPUT, PIN 5

SIGNAL 1e. HORIZONTAL SYNC OUTPUT, PIN 7

SEE FIG. 13, 14

SEE FIG. 15

FIGURE 12. TIMING DIAGRAM

NOTES:

b. The composite sync output reproduces all the video input sync pulses, with a propagation delay.

c. Vertical sync leading edge is coincident with the first vertical serration pulse leading edge, with a propagation delay.

d. Back porch goes low for a fixed pulse width on the trailing edge of video input sync pulses. Note that for serration pulses during vertical, the back

porch starts on the rising edge of the serration pulse (with propagation delay).

e. Horizontal sync output produces the true “H” pulses of nominal width of 5µs. It has the same delay as the composite sync.

5

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