GT4123B Datasheet, PDF (1/5 Pages) Gennum Corporation – GT4123B Two Channel Video Multiplier

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
 Pb-free and Green
APPLICATIONS
• Multimedia Graphics Overlay
• Production Switchers
• Linear Keyers
PIN CONNECTIONS
GT4123B
OUTPUT 1
FREQ. COMP ²
CONTROL ³
GROUND 4
8 V_cc
7 VIDEO IN B
6
V_EE
5 VIDEO IN A
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:
V_O = [ ( V_C • V_A) + (1 - V_C) • V_B ]
where V_C is the control input voltage, which may be varied
continuously over the range 0 V to 1 V, and V_A and V_B 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.
FUNCTIONAL BLOCK DIAGRAM
VIDEO IN A
VIDEO IN B
MULTIPLIER
CORE
CONTROL
FREQ
COMP
OUTPUT
ORDERING INFORMATION
V_REF (0.5V)
(INTERNAL)
Part
Number
GT4123BCDA
Package
Type
8 pin PDIP
Temperature Pb-Free
Range
and Green
0° to 70° C No
GT4123BCKA
8 pin SOIC
0° to 70° C No
GT4123BCTA
8 pin SOIC Tape 0° to 70° C No
GT4123BCKAE3 8 pin SOIC
0° to 70° C Yes
Revision date: July 2004
Document No. 521 - 20 - 02
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. [phone] fax: [phone]
Gennum Japan: Shinjuku Green Tower Building 27F 6-14-1, Nishi Shinjuku Shinjuku-ku, Tokyo 160-0023 Japan Tel: [phone] Fax: [phone]