TB1229DN View Datasheet(PDF) - Toshiba

Part Name

Description

Manufacturer

TB1229DN

VIDEO, CHROMA AND SYNCHRONIZING SIGNALS PROCESSING IC FOR PAL / NTSC SYSTEM COLOR TV

Toshiba 

PIN

No.

PIN NAME

FUNCTION

35 R-Y Output

36 B-Y Output

Output terminal of demodulated R-Y

or B-Y signal. There is an LPF for

removing carrier built in this pin.

TB1229DN

INTERFACE CIRCUIT

INPUT / OUTPUT

SIGNAL

DC

1.9V

AC

B-Y : 650mVp-p

R-Y : 510mVp-p

(with input of PAL-75%

color bar signal)

37 Y Output

Output terminal of processed Y

signal. Standard output level :

0.7Vp-p

VDD terminal of VCXO block. Insert

a decoupling capacitor between this

pin and pin 32 (Fsc GND) at the

38 Fsc VDD

shortest distance from both. If

―

―

decouping capacitor is inserted at a

distance from the pins, it may cause

spurious deterioration.

To connect filter for controlling black

expansion gain of the black

39 Black Stretch

expansion circuit. Black expansion

―

gain is determined by voltage of this

pin.

To connect 16.2MHz crystal clock

for generating sub-carrier.

40 16.2MHz X’tal

Lowest resonance frequency (f0) of

the crystal oscillation can be varied

―

by changing DC capacity. Adjust f0

of the oscillation frequency with the

board pattern.

8

2003-03-13

Share Link: