TB1254N View Datasheet(PDF) - Toshiba

Part Name

Description

Manufacturer

TB1254N

PAL / NTSC / SECAM 1CHIP (IF+VCD PROCESSOR) IC

Toshiba 



 

PIN NAME

24 V RAMP

FUNCTION

A terminal to be connected with a capacitor to

generate the V.Ramp signal.

The V.Ramp amplitude is kept constant by

the V.AGC.

24

INTERFACE

31

200Ħ

25 V NFB

An input terminal for V saw-teeth signal

feedback.

If the DC voltage on this pin is less than 1.7V,

it blanks RGB output for V guard.

25

12.5kĦ

V AGC

33

31

2V

26 V OUT

27 REF. R

An output terminal for the vertical driving

pulses.

33

V GUARD

31

A terminal to be connected with resistance to

stabilize internal current sources.

Connect 5.6 k  1% of resistance to GND.

30kĦ

200Ħ

26

1kĦ

V OUT read

0.5V

33

31

6.8k

27

49k

33

Ver3.7

00/01/28 6

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