MSK032 MSK | Alldatasheet
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The MSK 032 is a high speed, FET input, differential operational amplifier. Intended to replace the popular LH0032, the MSK 032 offers improved performance, much greater consistency from lot to lot, and improved stability over its operating temperature range. The MSK 032's wide bandwidth, accuracy and output drive capability make it a superior choice for applications such as video amplifiers, buffer amplifiers, comparator circuits and other high frequency signal transfer circuits. As with all MSK products, the MSK 032 is conservatively specified and is available in military and industrial grades. 4707 Dey Road Liverpool, N.Y. 13088 M.S.KENNEDY CORP. (315) 701-6751 032 FEATURES: Fast Slew Rate Fast Settling Time FET Input Wide Bandwidth Electrically Isolated LH0032 Pin Compatible Upgrade DESCRIPTION: EQUIVALENT SCHEMATIC NC Case Connection NC Negative Power Supply Output Positive Power Supply NC Output Compensation Compensation/Balance Compensation/Balance Inverting Input Non-Inverting Input PIN-OUT INFORMATION Video Amplifiers Buffer Amplifiers Comparator Circuits TYPICAL APPLICATIONS MIL-PRF-38534 CERTIFIED Rev. B 5/02 FET INPUT DIFFERENTIAL OP-AMP ISO 9001 CERTIFIED BY DSCC
Input Offset Voltage Drift Input Offset Adjust Input Bias Current Input Offset Current Input Impedance Power Supply Rejection Ratio Common Mode Rejection Ratio Input Noise Voltage Equivalent Input Noise OUTPUT Output Voltage Swing Output Current Settling Time to 1% Settling Time to 0.1% Full Power Bandwidth Bandwidth (Small Signal) TRANSFER CHARACTERISTICS Slew Rate Limit Open Loop Voltage Gain VIN=0V Bal.Pins=NC VIN=0V AV=-10V/V Bal.Pins=NC VIN=0V RPOT=10KΩ To +VCC VCM=0V Either Input VCM=0V F=DC ∆ VCC=±5V F=DC VCM=±10V F=10Hz To 1KHz F=1KHz F≤5MHZ RL=510Ω RL=510Ω RL=1KΩ 10V step RL=1KΩ 10V step RL=510Ω Vo=±10V RL=510Ω VOUT=±10V RL=510Ω VOUT=±10V RL=1KΩ ±18V ±40mA ±30V -55°C to +125°C -40°C to +85°C 187°C/W ABSOLUTE MAXIMUM RATINGS TST TLD TJ Storage Temperature Range Lead Temperature Range (10 Seconds) Junction Temperature -65°C to +150°C 300°C 175°C ±VCC IOUT VIN TC RTH Supply Voltage Output Current Differential Input Voltage Case Operating Temperature Range (MSK 032B/E) (MSK 032) Thermal Resistance (Output Switches) (Junction to Case) ELECTRICAL SPECIFICATIONS ±Vcc=±15VDC Unless Otherwise Specified Min. ±10 ±10 ±20 500 Max. ±18 ±20 ±25 ±25 ±250 ±10 100 Min. ±10 ±10 ±20 475 Max. ±18 ±22 ±300 150 100 Units V mA mA mV µV/°C mV mV pA nA pA nA Ω dB dB µVrms nV√Hz V mA nS nS MHz MHz V/µS dB MSK 032B/E MSK 032 Typ. ±15 ±15 ±75 1.5 ±12 ±30 550 Test Conditions Parameter Typ. ±15 ±15 ±18 ±0.5 ±10 ±50 ±0.2 0.1 1.5 ±12 ±30 600 Adjust to Zero Adjust to Zero Group A Subgroup 2,3 2,3 2,3 2,3 2,3 Adjust to Zero 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 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. Subgroup 5 and 6 testing available upon request. Subgroup 1,4 TA=TC=+25°C Subgroup 2,5 TA=TC=+125°C Subgroup 3,6 TA=TC=-55°C Electrical specifications are derated for power supply voltages other than ±15VDC. NOTES: Rev. B 5/02
To determine if a heat sink is necessary for your application and if so, what type, refer to the thermal model and governing equation below. COMPENSATION The MSK 032, can be frequency compensated by connecting an R-C snubber circuit from pin 3 to pin 4 as shown below. POWER SUPPLY BYPASSING The recommended capacitor value is 0.01µF and the resis- tor value can range from 2Ω to 500Ω. The effects of this R-C snubber can be seen on the typical performance curve labeled Slew Rate VS. Compensation Resistance. The graph clearly illus- trates the decrease in transition time as snubber resistance in- creases. This occurs because the high frequency components of the input square wave are above the corner frequency of the R-C snubber and are applied common mode to the bases of the second differential pair, (pins 3 and 4). There is no differential gain for these higher frequencies since the input signal is ap- plied common mode. Without the high frequency components appearing at the output, the slew rate and bandwidth of the op- amp are limited. However, at the cost of speed and bandwidth the user gains circuit stability. A good design rule to follow is: as closed loop gain decreases, circuit stability decreases, therefore snubber resistance should decrease to maintain stability and avoid oscillation. The MSK 032 can also be compensated using the standard LH0032 techniques. TJ=PD X (RθJC + RθCS + RθSA)+TA Where TJ= Junction Temperature PD= Total Power Dissipation RθJC=Junction to Case Thermal Resistance RθCS=Case to Heat Sink Thermal Resistance RθSA=Heat Sink to Ambient Thermal Resistance TC= Case Temperature TA= Ambient Temperature TS= Sink Temperature Governing Equation: Conditions: Vcc=±16VDC Vo=±8Vp Sine Wave, Freq.= 1KHz RL=510Ω For a worst case analysis we treat the +8Vp sine wave as an 8 VDC output voltage. 1.) Find driver power dissipation PD = (Vcc-Vo) (Vo/RL) Rev. B 5/02 Example: This example demonstrates a worst case analysis for the op- amp 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. = = = = 125.5mW 2.) For conservative design, set TJ=+125°C 3.) For this example, worst caseTA=+100°C 4.) RθJC= 187°C/W from MSK 032B Data Sheet 5.) RθCS= 0.15°C/W for most thermal greases 6.) Rearrange governing equation to solve for RθSA RθSA= ((TJ - TA)/PD ) - (RθJC) - (RθCS). = 192.3 - 187.15 = 5.2°C/W The heat sink in this example must have a thermal resistance of no more than 5.2°C/W to maintain a junction temperature of no more than+125°C. SLEW RATE VS. SLEW RATE LIMIT SLEW RATE SR = 2πVpF: Slew rate is based upon the sinusoidal linear response of the amplifier and is calculated from the full power bandwidth frequency. SLEW RATE LIMIT dv/dt: The slew rate limit is based upon the amplifier's res- ponse to a step input and is measured between 10% and 90%. MSK measures TR orTF, whichever is greater at±10VouT, RL=510Ω SRL= VO-20% TR or TF Both the negative and positive power supplies must be effectively decoupled with a high and low frequency bypass circuit to avoid power supply induced oscillation. An effective decoupling scheme consists of a 0.1 microfarad ceramic capa- citor in parallel with a 4.7 microfarad tantalum capacitor from each power supply pin to ground. Thermal Model:
TYPICAL PERFORMANCE CURVES Rev. B 5/02
ORDERING INFORMATION
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. MECHANICAL SPECIFICATIONS M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751 FAX (315) 701-6752 www.mskennedy.com MSK032B Part Number Rev. B 5/02 ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED Mil-PRF-38534 Class H Extended Reliability MSK032E MSK032S Mil-PRF-38534 Class K