Two Channel Video Multiplier
GT4123B Two Channel Video Multiplier
DATA SHEET
FEATURES • two-quadrant video multiplication • operation from ±4.5 V to...
Description
GT4123B Two Channel Video Multiplier
DATA SHEET
FEATURES two-quadrant video multiplication operation from ±4.5 V to ±13.2 V supply voltages 20 MHz ±0.1 dB video & control channel bandwidth ultra low differential gain & differential phase convenient 8 pin package
DESCRIPTION The GT4123B is a monolithic dual-channel video multiplier for use in a wide range of applications including broadcast and multimedia. Featuring two wideband video inputs and a single control input, the GT4123B achieves broadcast quality mixing of two video input signals to a single output by implementing the function: VO = [ ( VC VA ) + (1 - VC ) VB ] where VC is the control input voltage, which may be varied continuously over the range 0 V to 1 V, and VA and VB are the video input signals. The GT4123B is a low power version of the GT4123 and GT4123A Video Multipliers which operates from ± 5 V supply voltages and typically draws only 15 mA of current.
APPLICATIONS Multimedia Graphics Overlay Production Switchers Linear Keyers
PIN CONNECTIONS FUNCTIONAL BLOCK DIAGRAM GT4123B
OUTPUT FREQ. COMP CONTROL GROUND 1 2 3 4 8 7 6 5 V
cc
VIDEO IN A
FREQ COMP MULTIPLIER CORE
VIDEO IN B V
EE
VIDEO IN B
OUTPUT
VIDEO IN A
CONTROL
ORDERING INFORMATION
Part Number GT4123BCDA GT4123BCKA GT4123BCTA Package Type 8 pin PDIP 8 pin SOIC 8 pin SOIC Tape Temperature Range 0o to 70o C 0o to 70o C 0o to 70o C
VREF (0.5V) (INTERNAL)
Document No. 521 - 20 - 01
GENNUM CORPORATION P.O. Box 489, Stn A, ...
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