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Gennum - Monolithic Video Buffer/Clamp

Numéro de référence GB4550
Description Monolithic Video Buffer/Clamp
Fabricant Gennum 
Logo Gennum 





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GB4550 fiche technique
GB4550 & GB4550A
Monolithic Video Buffer/Clamp
DATA SHEET
FEATURES
adjustable clamp level from -5.5 V to +5.5 V at ±10 V
supplies.
ultra low differential gain (0.02% typ.) and
differential phase (0.03° typ.)
wideband unity gain: GB4550 ±0.2 dB at 25 MHz
GB4550A ±0.1 dB at 25 MHz
both drive 150pF loads at full power, flat to 10 MHz.
www.DataSheet4U.com
GB4550A — tight delay spread of ±0.15°at colorburst.
convenient 8 pin SIP packaging.
both can be configured as a gain stage with reduced
bandwidth.
PIN CONNECTIONS
GB4550 and GB4550A
1 2 3 4 5 67 8
DESCRIPTION
The GB4550 and GB4550A are high performance mono-
lithic video buffer/clamps made on Gennum's LSI process.
They feature a wideband differential amplifier that can be
configured as a gain stage. The output signal voltage is
limited to +2V above the clamp level in order to prevent
damage to crosspoints connected to the output.
The clamping level can be set for normal sync tip clamping
by connecting pin 4 to -0.286 volts. For other applications,
the clamping voltage level can be varied from -5.5 to +5.5
volts.
The GB4550A features a tight delay spread of only ±0.15
degrees while the GB4550 maintains a ± 1.5 degree delay
spread. Both devices operate from ± 9 to ±12 V power
supplies and will directly interface with Gennum's video
crosspoint switches.
The 8 pin SIP package is ideally suited for space restricted
board layouts.
APPLICATIONS
Input buffering and clamping to crosspoint switches
Inter - system video signal clamping
Pin No.
1
2
3
4
5
6
7
8
GB4550
+IN
VCC
COMP
VCL
CX
VEE
-IN
OUT
GB4550A
+IN
VCC
NC
VCL
CX
VEE
-IN
OUT
ORDERING INFORMATION
Function
non-inverting input
positive power supply
frequency compensation or NC
clamp voltage input
external capacitor
negative power supply
inverting input
output
CX
(NC on
GB4550A)
COMP
+IN
-IN
VCC
100k
+
-
(+2 V OUTPUT CLAMP)
30k
+
10pF
-
30k
7mA
Nominal
VEE
All resistors in ohms, all capacitors in microfarads unless otherwise stated
VCL
OUT
Part Number
GB4550 - CSA
GB4550ACSA
Package Type
8 pin SIP
8 pin SIP
Temperature Range
0 to 70oC
0 to 70oC
SIMPLIFIED CIRCUIT DIAGRAM
Revision Date: February 1994
Document No. 520 - 34 - 4
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Japan Branch: A-302, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3334-7700 fax: (03) 3247-8839

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