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GT4123BCDA Datasheet

  • GT4123BCDA

  • Two Channel Video Multiplier

  • 7頁(yè)

  • ETC

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GT4123, GT4123A
Two Channel Video Multipliers
DATA SHEET
FEATURES
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two-quadrant video multiplication
鈥?/div>
20 MHz 0.1 dB video & control channel bandwidth
鈥?/div>
one external frequency compensation adjustment
鈥?/div>
ultra low differential gain & differential phase
鈥?/div>
convenient 8 pin package
APPLICATIONS
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Multimedia Graphics Overlay
鈥?/div>
Production switchers
鈥?/div>
Linear Keyers
PIN CONNECTIONS
TOP VIEW
OUTPUT
FREQ. COMP
CONTROL
GROUND
4
5
PIN 1
8
V
DESCRIPTION
The GT4123 and GT4123A are monolithic dual-channel
video multipliers for use in a wide range of applications
including broadcast and multimedia.
Featuring two wideband video inputs and a single control
input, they achieve high quality video mixing of the two
video input signals to a single output by implementing the
function:
V
O
= [ ( V
C
鈥?V
A
) + (1 - V
C
) 鈥?V
B
]
where V
C
is the control input voltage, which may be varied
continuously over the range 0 to 1V with respect to the
ground pin, and V
A
and V
B
are the video input signals.
The GT4123 operates with typical power supply voltages
of
鹵
10 volts and draws 15 mA of current. The GT4123A
typically operates from +12 and -5 volt supplies. Both are
available in 8 pin PDIP and 8 pin SOIC.
An Application Note entitled "Using the GT4123 and GT4123A
Video MIxer ICs" (Document No. 520 - 61) is available from
Gennum Corporation.
cc
VIDEO IN B
V
EE
VIDEO IN A
MULTIPLIER
CORE
VIDEO IN A
FREQ
COMP
8 PIN DIP
VIDEO IN B
OUTPUT
ORDERING INFORMATION
Part Number
GT4123 - CDA
GT4123 - CKA
GT4123ACDA
GT4123ACKA
Package Type
8 pin PDIP
8 pin SOIC
8 pin PDIP
8 pin SOIC
Temperature Range
0
o
to 70
o
C
0
o
to 70
o
C
0
o
to 70
o
C
0
o
to 70
o
C
CONTROL
V
REF
(0.5V)
(INTERNAL)
FUNCTIONAL BLOCK DIAGRAM
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
Revision Date: January 1994.
Document No. 520 - 38 - 3
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3
Japan Branch: A-302, M i yamae Vi l l age, 2鈥?0鈥?2 M i yamae, Suginami鈥搆u Tokyo 168, Japan
tel. (905) 632-2996 fax: (905) 632-5946
tel. (03) 3334-7700
fax (03) 3247-8839

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