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| ISO 9001 CERTIFIED BY DSCC M.S.KENNEDY CORP. FEATURES: HIGH SPEED, WIDEBAND OPERATIONAL AMPLIFIER 3554 (315) 701-6751 4707 Dey Road Liverpool, N.Y. 13088 Stable at Low Gain Fast Slew Rate - 1200V/s Typical Gain Bandwidth Product - 1200 MHz Typical Low Quiescent Current - 14.0 mA Typical Low Offset - 2 mV Maximum Drop In Replacement for OPA 3554 and TP 3554 High Output Current - 100mA Minimum MIL-PRF-38534 QUALIFIED DESCRIPTION: The MSK 3554 is a pin compatible, low gain stable, drop-in replacement for the OPA 3554 and TP 3554. The MSK 3554 does not exhibit high frequency output oscillations like other versions of the 3554 when operated at closed loop gains of less than 55 V/V. The extremely low input bias current and input offset voltage ratings coupled with a high slew rate and wide bandwidth make the MSK 3554 an excellent choice for fast D/A converters, buffers, pulse amplifiers and other high speed op-amp applications. The MSK 3554 is packaged in an 8-pin TO-3 using thick film hybrid technology to obtain high reliability and compact size. EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS Fast D/A Converters Pulse Amplifiers Video Instrumentation Fast Buffer/Follower Video Frequency Filters 1 2 3 4 1 PIN-OUT INFORMATION Output Positive Power Supply Compensation Balance 8 7 6 5 Balance Negative Power Supply Non-Inverting Input Inverting Input Rev. B 7/00 ABSOLUTE MAXIMUM RATINGS ELECTRICAL SPECIFICATIONS Parameter STATIC Supply Voltage Range Quiescent Current Thermal Resistance INPUT Input Offset Voltage Input Offset Voltage Drift Input Offset Adjust Input Bias Current 10 Input Offset Current Input Impedance 3 Power Supply Rejection Ratio Input Noise Density Input Noise Voltage OUTPUT Output Voltage Swing Output Current Settling Time 2 3 Power Bandwidth 3 3 3 3 3 3 3 Test Conditions Group A Subgroup - MSK 3554B Min. 12 80 10.5 16 70 800 90 Typ. 15 14 37 0.5 20 10 10 2.0 2.0 10 15 10.0 12 120 19 90 1200 96 11 MSK 3554 Min. 12 80 10 15 70 750 88 Typ. 15 14 37 0.5 20 Adjust to Zero 20 2.0 10 15 10.0 12 120 19 90 1200 96 11 Max. 18 20 30 2.0 50 50 50 25 30 150 - Max. 18 20 3.0 100 30 150 - VIN=0V AV=-1V/V 3 1 2,3 1 2,3 1,2,3 1 2,3 1 2,3 4 4 4 4 4 4 4 Junction to Case Output Devices Bal.Pins=N/C VIN=0V AV=-10V/V VIN=0V RPOT=20K To +VCC AV=-1V/V VCM=0V Either Input VCM=0V F=DC Differential VCC=10V F=1KHz F=10Hz To 1MHz RL=100 TJ<150C 0.1% 10V step RL=100 VO=10V CC=0 CC=0 VOUT=10V RL=100 CC=0 3 Adjust to Zero 110 110 100 120 100 120 Bandwidth (Small Signal) Slew Rate Open Loop Voltage Gain TRANSFER CHARACTERISTICS V/S dB CC=0 RL=100 F=1KHz VOUT=10V 1 2 3 4 5 6 7 8 9 10 NOTES: Unless otherwise specified VCC=15VDC AV=-1, measured in false summing junction circuit. Devices shall be capable of meeting the parameter, but need not be tested. Typical parameters are for reference only. Industrial grade 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. Subgroup 5 and 6 testing available upon request. Subgroup 1,4 TA=TC=+25C Subgroup 2,5 TA=TC=+125C Subgroup 3,6 TA=TC=-55C Measurement taken .5 second after application of power using automatic test equipment. 2 Rev. B 7/00 PD TJ VCC IOUT VIN TC 18V Supply Voltage 150mA Peak Output Current 25V Differential Input Voltage Case Operating Temperature -55C to +125C MSK 3554B -40C to +85C MSK 3554 TST TLD Storage Temperature Range -65C to +150C Lead Temperature Range 300C (10 Seconds) Power Dissipation See Curve Junction Temperature 175C Units V mA mA C/W mV V/C mV pA nA pA nA dB nVHz Vrms V mA nS MHz MHz APPLICATION NOTES HEAT SINKING Refer to the following thermal model and governing equations to determine appropriate heat sinking for your application. RSA = ((TJ - TA)/PD) - (RJC) - (RCS) = ((125C - 90C) / .64W) - 37C/W - .15C/W = 54.7 - 37.15 = 17.54C/W The heat sink in this example must have a thermal resistance of no more than 17.54C/W to maintain a junction temperature of no more than +125C. Thermal Model: OFFSET NULL Typically, the MSK 3554(B) has an input offset voltage of less than 0.5mV. If it is desirable to adjust the offset closer to "zero", or to a value other than "zero", the circuit below is recommended. Rp should be a ten-turn 20K potentiometer. Typical offset adjust is 20mV. Governing Equation: TJ=PD x (RJC + RCS + RSA) + TA Where TJ = Junction Temperature PD = Total Power Dissipation RJC = Junction to Case Thermal Resistance RCS = Case to Heat Sink Thermal Resistance RSA = Heat Sink to Ambient Thermal Resistance TC = Case Temperature TA = Ambient Temperature TS = Sink Temperature Example: This example demonstrates a worst case analysis for the opamp output stage. This occurs when the output voltage is 1/2 the power supply voltage. Under this condition, maximum power transfer occurs and the output is under maximum stress. Conditions: VCC = 16VDC VO = 8Vp Sine Wave, Freq. = 1KHZ RL = 100 For a worst case analysis we will treat the +8Vp sine wave as an 8 VDC output voltage. 1.) Find Driver Power Dissipation PD = (VCC-VO) (VO/RL) = (16V-8V) (8V/100) = .64W 2.) For conservative design, set TJ=+125C 3.) For this example, worst case TA=+90C 4.) RJC = 37C/W from MSK 3554B Data Sheet 5.) RCS = 0.15C/W for most thermal greases 6.) Rearrange governing equation to solve for RSA COMPENSATION The compensation capacitor is connected between pins 1 and 3 and is used to optimize bandwidth and slew rate while maintaining circuit stability. The effect of compensation capacitance can be seen in the Bode Plot under the Typical Performance Curves. As closed loop gain increases, compensation capacitance can decrease and higher slew rates and wider bandwidths will be realized. See the component selection table for recommended values of input and feedback resistance as well as feedback capacitance and compensation capacitance. COMPONENT SELECTION TABLE GAIN -1 -10 -100 follower Rin 5.6K 560 100 0 Rfb 5.6K 5.6K 10K 0 Cfb 2.0pF 1.2pF 0.0pF 0pF Ccomp 10pF 10pF 0.0pF 12pF 3 Rev. B 7/00 TYPICAL PERFORMANCE CURVES 4 Rev. B 7/00 MECHANICAL SPECIFICATIONS TOP VIEW PIN REFERENCES SHOWN. ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED ORDERING INFORMATION Part Number MSK3554 MSK3554B Screening Level Industrial Military-Mil-PRF-38534 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. M.S. Kennedy Corp. 5 Rev. B 7/00 |
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