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TEA5114A
RGB SWITCHING CIRCUIT
.
. 25MHz BANDWIDTH
. CROSSTALK : 55dB
SHORT CIRCUIT TO GROUND OR VCC PRO-
.
.
TECTED
ANTI SATURATION GAIN CHANGING
VIDEO SWITCHING
DIP16
(Plastic Package)
ORDER CODE : TEA5114A
PIN CONNECTIONS
DESCRIPTION
This integrated circuit provides RGB switching al-
R1 INPUT 1 16 R OUTPUT
lowing connections between peri TV plug, internal
RGB generator and video processor in a TV set. GND 2 15 FB R INPUT
The input signal black level is tied to the same ref- R 2 INPUT 3 14 V CC
erence voltage on each input in order to have no dif- G1 INPUT 4 13 G OUTPUT
ferential voltage when switching two RGB genera-
G2 INPUT 5 12 FB G INPUT
tors.
B 1 INPUT 6 11 B OUTPUT
An AC output signal higher than 2 Vpp makes gain
going slowly down to 0dB to protect the TV set video B 2 INPUT 7 10 FB 2 + FB B INPUT
amplifier from saturation.
5114A-01.EPS
FB 1 INPUT 8 9 FB OUTPUT
Fast blanking output is a logicial OR between FB1
(Pin 8) and FB2 (Pin 10).
BLOCK DIAGRAM
16 15 14 13 12 11 10 9
G=2 G=2 G=2 OR
VREF
TEA5114A
5114A-02.EPS
1 2 3 4 5 6 7 8
May 1996 1/4
TEA5114A
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Supply Voltage 18 V
Tj Junction Temperature