TDA2579B View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TDA2579B

Horizontal/vertical synchronization circuit

Philips Electronics 

Philips Semiconductors

Horizontal/vertical synchronization circuit

Preliminary specification

TDA2579B

5. Divider in search (large) mode:

start: reset divider = start vertical sync plus 1 clock pulse stop:

n = -2----×f--V---f--H-- > 576 clock pulse 44

n = -2----×f--V---f--H-- < 576 clock pulse 34

Divider in small window mode:

start: clock pulse 517 (60 Hz) clock pulse 618 (50 Hz)

stop: clock pulse 34 (60 Hz) clock pulse 44 (50 Hz)

6. Depends on DC level of pin 5, given value is valid for V5 ≈ 5 V.

7. Value related to internal zener diode reference voltage source spread includes the complete spread of reference

voltage.

September 1990

17

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