TA1287PG Datasheet, PDF (5/24 Pages) Toshiba Semiconductor – BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC

TA1287PG,TA1287FG
FUNCTION DESCRIPTION
MIXING RATIO
TA1287PG, TA1287FG have a circuit, which mixes a main signal with an external input signal and outputs
the mixed signal. The mixing circuit has 8 combinations of mixing gain ratio of a main to an external
signals.
Table
YS1
L
H
L
H
L
H
L
H
The mixing ratio of external to main (TV)
YS2 YS3
THE MIXING RATIO
EXTERNAL
MAIN (TV)
L
L
0
1
L
L
0.3
0.7
H
L
0.4
0.6
H
L
0.5
0.5
L
H
0.6
0.4
L
H
0.7
0.3
H
H
0.8
0.2
H
H
1
0
MATRIX CONTROL
Pin 16 is a high-speed switch to control the matrix mode for output signals.
Table Matrix mode depending on by the voltage of pin 16
VOLTAGE OF PIN 16 [V]
0 ~ 0.7
~ 2.3
~ 3.8
3.8 ~
MODE
Through
RGB to YUV (PAL)
RGB to YUV (NTSC)
RGB to YIQ
5
2004-08-03