TDA2579C datasheet(3/24 Pages) PHILIPS

3 / 24 page

January 1994

Philips Semiconductors

Preliminary speciﬁcation

Synchronization circuit with synchronized

vertical divider system for 60 Hz

TDA2579C

QUICK REFERENCE DATA

Note

1. Open collector loaded with external resistor to positive supply.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supply

I16

minimum required current for starting

horizontal oscillator and output stage

6.2

−−

V10

main supply voltage

−

I10

supply current

−

Input signals

V5-9

sync pulse input amplitude

0.05

−

I12

horizontal ﬂyback pulse input current

0.2

−

vertical comparator input voltage

AC (peak-to-peak value)

−

0.8

−

Output signals

V11

horizontal output voltage

(open collector)

I11 = 25 mA

−−

0.5

vertical output stage driver

(emitter follower)

I1 = 1.5 mA

−−

V17

sandcastle output voltage levels

burst key

9.8

−−

horizontal blanking

−

4.5

−

vertical blanking

−

2.5

−

VIDEO TRANSMITTER IDENTIFICATION OUTPUT; note 1

V13

output voltage

no sync pulse present

−−

0.32

I13

output current

no sync pulse present

−−

5mA

V13

output voltage

sync pulse present;

divider ratio <576

−

7.6

−

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