MSK165

ISO-9001 CERTIFIED BY DSCC M.S.KENNEDY CORP. FEATURES: ULTRA HIGH VOLTAGE DUAL OPERATIONAL AMPLIFIER 165 (315) 701-6751 4707 Dey Road Liverpool, N.Y. 13088 Internally Compensated For Gains > 10 V/V Monolithic MOS Technology High Voltage Operation : 350V Low Quiescent Current : 4mA Total High Output Current : 60mA Min. Per Channel No Second Breakdown High Speed : 40V/µS Typ. Space Efficient Dual Amplifier MIL-PRF-38534 QUALIFIED DESCRIPTION: MSK165 The MSK 165 is an ultra high voltage dual monolithic MOSFET operational amplifier ideally suited for electrostatic transducer and electrostatic deflection applications. With a total supply voltage rating of 350 volts and 60mA of output current available from each amplifier, the MSK 165 is also an excellent low cost choice for high voltage piezo drive circuits. The MOSFET output frees the MSK 165 from secondary breakdown limitations and power dissipation is kept to a minimum with a quiescent current rating of only 4mA total. The MSK 165 is internally compensated for gains of 10 V/V or greater and is packaged in a hermetically sealed 14 pin power dip with heat sink bolt down tabs. EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS High Voltage Piezo Electric Positioning Electrostatic Deflection Computer to Vacuum Tube Interface Ultra High Voltage Dual Op-Amp Applications Bridge Amplifier 1 2 3 4 5 6 7 PIN-OUT INFORMATION -Vcc 1 +Vcc 1 Output Drive 1 Current Sense 1 N/C Inverting Input 2 Non -Inverting Input 2 1 14 13 12 11 10 9 8 Non-Inverting Input 1 Inverting Input 1 N/C Current Sense 2 Output Drive 2 +Vcc 2 -Vcc 2 Rev. A 8/00 ABSOLUTE MAXIMUM RATINGS ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ RTH ELECTRICAL SPECIFICATIONS Parameter STATIC Supply Voltage Range 2 4 9 Quiescent Current 1 VIN=0V 2 3 INPUT Offset Voltage Offset Voltage Drift 4 Offset Voltage vs ±Vcc 4 Input Bias Current Input Impedance 4 Input Capacitance 4 Common Mode Rejection 4 Noise OUTPUT Output Voltage Swing Output Current Power Bandwidth 4 Resistance 4 Settling Time to 0.1% 3 4 Capacitive Load Slew Rate Open Loop Voltage Gain 4 F=15Hz RL=5KΩ 4 4 Test Conditions 1 Group A Subgroup Min. ±50 84 - MSK165B Typ. Max. Min. MSK165 Typ. ±150 ±1.4 ±15 ±40 ±20 ±5 10 5 94 50 11 Max. ±175 ±2.0 ±30 ±32 ±100 - ±150 ±175 ±50 ±1.4 ±2.0 ±1.0 ±15 ±40 ±20 ±5 10 5 94 50 11 ±2.0 ±3.0 ±2.1 ±30 ±65 ±32 ±50 ±50 - 84 - VIN=0V VIN=0V VIN=0V VCM=0V (DC) VCM=±90VDC 1Hz≤f≤10Hz 1 2,3 1 1,3 2 4 4 4 4 IOUT=±40mA Peak VOUT=MAX VOUT=280VPP No Load RCL=0Ω 10V Step AV=+1V/V ±138 ±141 ±60 10 20 94 ±120 26 150 12 40 106 ±138 ±141 ±60 10 10 94 ±120 26 150 12 20 106 TRANSFER CHARACTERISTICS V/µS dB NOTES: 1 2 3 4 5 6 7 8 Unless otherwise noted, ±VCC= ±150VDC and specifications apply to each amplifier. Derate maximum supply voltage 0.5V/°C below TC=+25°C. No derating is needed above TC=25°C. AV=-10V/V 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 requested. 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 TC=+25°C Subgroup 2,5 TC=+125°C Subgroup 3,6 TA=-55°C 9 Electrical specifications are derated for power supply voltages less than ±50VDC. 2 Rev. A 8/00 ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ VCC 2 ±IOUT ±IOUTP VIND VIN TJ Total Supply Voltage Output Current (within S.O.A.) Output Current Peak Input Voltage (Differential) Input Voltage (Common Mode) Junction Temperature 350V 60mA 120mA ±16V ±Vcc 150°C TST TLD TC Storage Temperature -65°C to +150°C Lead Temperature 300°C Case Operating Temperature (MSK165B) -55°C to +125°C (MSK165) -40°C to +85°C Thermal Resistance (DC Each Amplifier) Junction to Case 12°C/W Units V mA mA mA mV µV/°C µV/V pA nA Ω pF dB µVRMS V mA KHz Ω µS nF APPLICATION NOTES CURRENT LIMIT Current limit resistor value can be calculated as follows: RCL=3/ILIM It is recommended that the user set up the value of current limit as close as possible to the maximum expected output current to protect the amplifier. The minumum value of current limit resistance is 33 ohms. The maximum practical value is 500 ohms. Current limit will vary with case temperature. Refer to the typical performance graphs as a guide. Since load current passes through the current limit resistor, a loss in output voltage swing will occur. The following formula approximates output voltage swing reduction: VR=IO * RCL When the device is in current limit, there will be spurious oscillations present on the negative half cycle. The frequency of the oscillation is application dependant and can not be predicted. Oscillation will cease when the device comes out of current limit. If current limit is not required simply short pin 3 to pin 4 and pin 10 to pin 11. SAFE OPERATING AREA (SOA) The MOSFET output stage of this power operational amplifier has two distinct limitations: 1. The current handling capability of the die metallization. 2. The junction temperature of the output MOSFET's. NOTE: The output stage is protected against transient flyback. However, for protection against sustained, high energy flyback, external fast-recovery reverse biased diodes should be connected from the output to ground. INPUT PROTECTION Input protection circuitry within the MSK 165 will clip differential input voltages greater than 16 volts. The inputs are also protected against common mode voltages up to the supply rails as well as static discharge. There are 300 ohm current limiting resistors in series with each input. These resistors may become damaged in the event the input overload is capable of driving currents above 1mA. If severe overload conditions are expected, external input current limiting resistors are recommended. OUTPUT SNUBBER NETWORK A 100 ohm resistor and a 330pF capacitor connected in series from the output of the amplifier to ground is recommended for applications where load capacitance is less than 330pF. For larger values of load capacitance, the output snubber network may be omitted. If loop stability becomes a problem due to excessively high load capacitance, a 100 ohm resistor may be added between the output of the amplifier (the junction of RCL and pin 4 or 11) and the load. A small tradeoff with bandwidth must be made in this configuration. The graph below illustrates the effect of capacitive load on open loop gain. STABILITY The MSK 165 has sufficient phase margin when compensated for unity gain to be stable with capacitive loads of at least 10nF at gains of 2V/V or greater. However, it is recommended that the parallel sum of the input and feedback resistor be 1000 ohms or less for closed loop gains of ten or less to minimize phase shift caused by the R-C network formed by the input resistor, feedback resistor and input capacitance. An effective method of checking amplifier stability is to apply the worst case capacitive load to the output of the amplifier and drive a small signal square wave across it. If overshoot is less than 25%, the system will typically be stable. 3 Rev. A 8/00 TYPICAL PERFORMANCE CURVES 4 Rev. A 8/00 MECHANICAL SPECIFICATIONS MSK165 ESD TRIANGLE INDICATES PIN 1. ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED. ORDERING INFORMATION Part Number MSK165 MSK165B 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. A 8/00