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器件描述：Monolithic Video Buffer/Clamp
器件厂商：GENNUM [Gennum Corporation]
厂商主页：http://www.gennum.com
文件大小：152.08KB
文件页数：5
PDF阅读：GB4550.pdf (点击阅读器件资料)
摘要：
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
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
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.
? 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.
Document No. 520 - 34 - 4
GB4550 & GB4550A
Monolithic Video Buffer/Clamp
DATA SHEET
1 2 3 4 5 6 7 8
GB4550 and GB4550A
Pin No. GB4550 GB4550A Function
1 +IN +IN non-inverting input
2V
CC
V
CC
positive power supply
3 COMP NC frequency compensation or NC
4V
CL
V
CL
clamp voltage input
5C
X
C
X
external capacitor
6V
EE
V
EE
negative power supply
7 -IN -IN inverting input
8 OUT OUT output
+IN
10pF
C
X
V
CL
COMP
OUT
30k
100k
7mA
Nominal
+
-
-IN
V
CC
V
EE
30k
(+2 V OUTPUT CLAMP)
+
-
(NC on
GB4550A)
SIMPLIFIED CIRCUIT DIAGRAM
ORDERING INFORMATION
Part Number Package Type Temperature Range
GB4550 - CSA 8 pin SIP 0 to 70
o
C
GB4550ACSA 8 pin SIP 0 to 70
o
C
PIN CONNECTIONS
All resistors in ohms, all capacitors in microfarads unless otherwise stated
Revision Date: February 1994
相关器件：GB4550-CSA GB4550A GB4550ACSA GB4550A GB4550-CSA GB4550 GB4550ACSA
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