GB4600 Monolithic
Unity Gain Video Buffer
DATA SHEET
FEATURES
•
wideband, unity gain, stable operation
(
±
0.1 dB at 100 MHz when C
L
= 27 pF)
(full power BW = 120 MHz when C
L
= 47 pF).
•
selectable high and low current operating
modes (I
L
= 10 mA or
I
L
= 20 mA)
•
drives high capacitance loads (C
L
= 180 pF)
to 70 MHz at -3 dB.
•
extremely low differential phase and gain
•
convenient 8 pin SOIC packaging
•
100
m
W disabled power consumption
DESCRIPTION
The GB4600 is a high performance, monolithic unity gain
video buffer made on Gennum's proprietary LSI process.
The device features a stable wideband topology capable
of driving high capacitance video busses.
Optimal system power/bandwidth can be achieved by
using the high/low current mode select (I-SET). In addition,
the GB4600 can be disabled by taking the ENABLE pin to
ground. The ENABLE input is TTL and 5 V CMOS compatible.
The GB4600 operates from
±
4.5 to
±
5.5 V power supplies
and typically draws 30 mA of current when
I
-SET is not
connected. The supply current drops by approximately
50% when
I
-SET is directly connected to V
EE
.
A typical application for the GB4600 is interfacing Gennum's
wide range of video crosspoint switches. The 8 pin SOIC
packaging is ideally suited for space restricted board
layouts.
FUNCTIONAL BLOCK DIAGRAM
INPUT
VIDEO
SWITCH
OUTPUT
APPLICATIONS
•
Input and output buffering in wide crosspoint matrices
•
Inter-board video signal buffering
ENABLE
ENABLE
•
Inter-system video signal buffering
CURRENT SET
I-SET
AVAILABLE PACKAGING
8 pin SOIC
PIN CONNECTIONS
ORDERING INFORMATION
ENABLE
V
EE
V
CC
OUTPUT
1
1
2
2
3
3
4
4
5
8
7
6
6
7
8
5
GND
INPUT
NC
I-SET
Part Number
Package
Temperature Range
GB4600-CKA
8 SOIC
0° to 70°C
Revision Date: February 2003
Document No. 13421 - 5
GENNUM CORPORATION P Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
.O.
Japan Branch: A-302, Miyamae Village, 2-10-42, Miyamae, Suginami-ku, Tokyo 168, Japan
tel. (03) 3334-7700
fax. (03) 3247-8839
GENNUM [ GENNUM CORPORATION ]
