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ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
DUAL ULTRA HIGH SPEED AMPLIFIER
450
(315) 701-6751
4707 Dey Road Liverpool, N.Y. 13088
MIL-PRF-38534 QUALIFIED FEATURES:
Very High Output Slew Rate - Up to 2000V/S Low Quiescent Current - 6.5mA (per Amplifier) Fast Settling Time - 100nS to 0.1% @ VIN=10V Wide Bandwidth - 65MHz at Gain of -1 20MHz Full Power Bandwidth - 20VPP @ RL=500 Ultra Low Offset - 50V Very Low Offset Drift - 1.0V/C Space Efficient Dual Available in Surface Mount Package
MSK 450 Q
MSK 450 R
DESCRIPTION:
The MSK 450 is a dual high speed operational amplifier that exhibits an impressive combination of high bandwidth, speed and precision D.C. characteristics. The hybrid's current feedback architecture provides much better ac performance, higher linearity and cleaner pulse response than traditional Op-Amps which make the MSK 450 an excellent choice as a Flash A/D converter driver or one of a variety of video type applications. The MSK 450 delivers hybrid performance at a monolithic price. The MSK 450 is available in a 16 pin ceramic dip as well as a 28 pin surface mount package.
EQUIVALENT SCHEMATIC EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS
The MSK 450 contains two totally isolated independent monolithic integrated circuits. The equivalent schematic of one half of the MSK 450 Q is shown to the left.
PIN-OUT INFORMATION
"Q" Package 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14
1
Balance A -Input A +Input A -VCC A Balance B -Input B +Input B -VCC B "R" Package Balance A NC -Input A NC +Input A -VCC A NC NC Balance B NC -Input B NC +Input B -VCC B
16 15 14 13 12 11 10 9 28 27 26 25 24 23 22 21 20 19 18 17 16 15
Balance A +VCC A Output A FF A Balance B +VCC B Output B FF B Balance A NC +VCC A NC Output A FF A NC NC Balance B NC +VCC B NC Output B FF B
Rev. A 6/02
TYPICAL APPLICATIONS
Flash ADC Amplifiers High Speed Current DAC Interfaces Video Distribution Pulse Amplifiers High Speed Communication Radar, IF Processors
ABSOLUTE MAXIMUM RATINGS
-65C to +150C 300C

ELECTRICAL SPECIFICATIONS
Parameter STATIC Supply Voltage Range Quiescent Current INPUT Input Offset Voltage Input Offset Drift Input Offset Voltage Input Bias Current Input Resistance 2 Input Capacitance Input Voltage Noise Input Current Noise OUTPUT Output Voltage Swing Output Current Settling Time
12 2 2 27
Vcc=15VDC Unless Otherwise Specified
Group A MSK 450B/E Typ. 15 6.5 8.5 50 1.0 4 7 10 10 50 15 50 1200 2.3 Max. 18 8 10 325 7.5 20 7 10 10 50 15 45 1200 2.0 Min. 4.5 MSK 450 Typ. 15 6.5 50 1.0 4 250 50 10 2 2.0 12.0 11 80 100 50 20 65 0.005 12 2000 3.0 4.5 0.1 0.03 Max. 18 10 500 20 550 65 2.5 15.0 125 65 Subgroup Min. 4.5 Units
Test Conditions
VIN=0V Each Amplifier VIN=0V VIN=0V vs. VCC VCM=0V Either Input -Input +Input Either Input Common Mode F 1KHz F=1KHz RL=500 F 10MHz Continuous 0.1% 10V step 1.0% 10V step VO=10V
2 2 2
1 2,3 1 2,3 1 2,3 4 4 4 4 4 4 4 4 -
250 500 1800 2800 50 10 2 2.0 12.0 11 80 100 50 20 65 0.005 12 2000 3.0 4.5 0.1 0.03 65 2.5 15.0 125 65 -
Input Voltage Range 2
Full Power Bandwidth Bandwidth (Small Signal) Harmonic Distortion Output Resistance Slew Rate Open Loop Transresistance Transcapacitance
2 2 2 2 2
Input=OdBm VIN=2VRMS Open Loop VOUT=10V VOUT=10V F=4.4MHz F=4.4MHz
TRANSFER CHARACTERISTICS V/S M pF Degree %
Differential Phase Error Differential Gain Error
NOTES:
1 2 3 4 5 6 AV= -1, measured in false summing junction circuit. Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only. Industrial grade and "E" suffix devices shall be tested to subgroups 1 and 4 unless otherwise specified. Military grade devices ("B" suffix) shall be 100% tested to subgroups 1,2,3 and 4. Subgroups 5 and 6 testing available upon request. TA=TC=+25C Subgroup 1,4 TA=TC=+125C Subgroup 2,5 TA=TC=-55C Subgroup 3,6 7 Electrical specifications are derated for power supply voltages other than 15VDC.
2
Rev. A 6/02

VCC VIC VIND IIN IOS TC
Supply Voltage 18V Common Mode Input Voltage VCC Differential Input Voltage 6V Inverting Input Current (Continuous) 5mA Output Short Circuit Duration Indefinite Case Operating Temperature Range (MSK 450B/E) -55C to+125C (MSK 450) -40C to +85C

RTH Thermal Resistance Junction to Case TST Storage Temperature Range TLD Lead Temperature (10 Seconds) PD Power Dissipation TJ Junction Temperature
10C/W
1.5W 175C
V mA mA V V/C V/V nA nA M pF V nVHz pAHz V mA nS nS MHz MHz %
APPLICATION NOTES STABILITY AND LAYOUT CONSIDERATIONS
As with all wideband devices, proper decoupling of the power lines is extremely important. The power supplies should be bypassed, as near to the power supply pins as possible, with a parallel grouping of a 0.1F ceramic disc and a 4.7F tantalum capacitor. Ferrite beads can also be very helpful in some demanding applications. A small resistor should be used in series with the supply pins (4.7 TYP.). Wideband devices are also sensitive to printed circuit board layout. Be sure to keep all runs as short as possible, especially those associated with the summing junction and power lines. Circuit traces should be surrounded by ground planes whenever possible to reduce unwanted resistance and inductance. The curve below shows the relationship between resonant frequency and capacitor value for 3 trace lengths.
OPTIONAL OFFSET NULL
Typically, the MSK 450 has an input offset voltage of only 50V. When the feedback resistor value is 1K, it may be desirable to null the offset externally, because of the bias current at the inverting input. Figure 1 below illustrates optional offset null for one side of the MSK 450 Q.
Figure 1
LARGE CAPACITIVE LOADS
When it is required to drive capacitive loads greater than 100pF, an external network can be connected as shown in Figure 2. For CL=1000pF, R3 should be 750 and C1 should be 22pF. This network should be connected between the output and feed forward pins of the hybrid. This circuit will yield a maximum slew rate of approximately 100V/S. For bandwidth and stability, the optimum value of R3 should be emperically determined.
EXTERNAL COMPONENT SELECTION
The table below illustrates nominal values for the feedback and input resistors for various closed loop gain settings. These values were chosen to yield high bandwidth with minimal peaking. External Component Selection Guide Gain (V/V) -1 -5 -10 +10 R1 1K 200 50 50 R2 1K 1K 500 450 Figure 2
NON-INVERTING APPLICATIONS
The MSK 450 is suited for use at gains of 10 or greater when being used in the non-inverting mode. The reason for this is that the non-inverting input cannot tolerate transients greater than 1V. However, the MSK 450 can be used at lower non-inverting gains if the input voltage remains small. Please consult factory for further information.
3
Rev. A 6/02
TYPICAL PERFORMANCE CURVES
4
Rev. A 6/02
MECHANICAL SPECIFICATIONS MSK 450 Q MSK 450 R
ESD TRIANGLE INCICATES PIN 1. NOTE: ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED.
Part Number MSK 450Q MSK 450EQ MSK 450BQ MSK 450R MSK 450ER MSK 450BR
ORDERING INFORMATION
Screening Level Industrial Extended Reliability Mil-PRF-38534 Class H Industrial Extended Reliability Mil-PRF-38534 Class H
4707 Dey Road, Liverpool, New York 13088 Phone (315) 701-6751 FAX (315) 701-6752 www.mskennedy.com
The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make changes to its products or specifications without notice, however, and assumes no liability for the use of its products. Please visit our website for the most recent revision of this datasheet.
M.S. Kennedy Corp.
5
Rev. A 6/02

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