TB1226EN 查看數據表（PDF） - Toshiba

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TB1226EN

TOSHIBA Bi-CMOS INTEGRATED CIRCUIT SILICON MONOLITHIC

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.

37 Y Output

38 Fsc VDD

Output terminal of processed Y signal.

Standard output level : 0.7Vp-p

VDD terminal of DDS block. Insert a

decoupling capacitor between this pin

and pin 32 (Fsc GND) at the shortest

distance from both.

If decouping capacitor is inserted at a

distance from the pins, it may cause

spurious deterioration.

INTERFACE CIRCUIT

—

TB1226EN

INPUT / OUTPUT

SIGNAL

DC

1.9V

AC

B-Y : 650mVp-p

R-Y : 510mVp-p

(with input of

PAL-75% color bar

signal)

—

To connect filter for controlling black

39 Black Stretch

expansion gain of the black 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

2001-07-26

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