GB4550A 반도체 회로 부품 판매점
Monolithic Video Buffer/Clamp
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 Gennum |
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.
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• 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
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE
Supply Voltage VS
± 13.5 V
Operating Temperature Range
0°C ≤ TA ≤ 70° C
Storage Temperature Range
-65°C ≤ TS ≤ 150° C
Lead Temperature (Soldering, 10 Sec)
260° C
Differential Video Input Voltage
±5 V
Clamp Input Voltage
VEE + 2.5 V ≤ VCL ≤ Vcc - 2.5 V
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
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ELECTRICAL CHARACTERISTICS VS = ± 10 V, TA = 0 - 70°C, RL = 10kΩ, CL = 150 pF, CCOMP = 0 pF unless otherwise shown.
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
MAX UNITS
POWER
SUPPLIES
Supply Voltage
+ Supply Current
- Supply Current
SIGNAL
PATH
Maximum Input Voltage
Above VCL
Insertion Loss
Full Power Bandwidth
GB4550
SIGNAL
PATH
Small Signal Bandwidth
Frequency Response
Signal Path Delay
Delay Tolerance
Full Power Bandwidth
GB4550A
SIGNAL
PATH
Small Signal Bandwidth
Frequency Response
Signal Path Delay
Delay Tolerance
Differential Gain
SIGNAL
PATH
Differential Phase
Input Resistance
Input Capacitance
Output Resistance
CLAMP
Clamp Voltage Range
Clamp Accuracy
VS
I+
I-
VIN MAX
I.L.
FPBW
SSBW
øD
FPBW
SSBW
øD
dg
dp
RIN
CIN
ROUT
VCL
Operating Range
± 9 ± 10
-9
-9
1.8
ƒ = 100kHz
-
-3.0dB, VIN = 1V p-p
± 0.2dB, VIN = 100mV p-p
at 10MHz, VIN = 1V p-p
at 3.58MHz
15
20
-
-
at 3.58MHz
-
-3.0dB, VIN = 1V p-p
± 0,1dB, VIN=100mV p-p, CL=100pF
at 10MHz, VIN = 1V p-p
at 3.58 MHz
17
25
-
-
at 3.58MHz
-
at 3.58MHz
-
at 3.58MHz
-
80
-
AAVV
=
=
+1,
+1,
ƒ
ƒ
=
=
0 to 10MHz
100MHz
-
-
-5.5
VIN = 1V p-p
-
2.0
-
18
25
0.05
-8
± 1.5
20
30
0.1
-7.5
± 0.15
0.02
0.03
100
2.0
8.6
53
-
7
± 12
13.8
13.8
V
mA
mA
2.25
0.03
-
-
-
-
-
-
-
-
-
-
0.05
0.05
-
-
-
-
+5.5
28
V
dB
MHz
MHz
dB
deg
deg
MHz
MHz
dB
deg
deg
%
deg
kΩ
pF
Ω
Ω
V
mV
520 - 34 - 4
2
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제조업체: Gennum
( gennum )
GB4550A buffer
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[ GB4550A.PDF ]
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