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FEATURES: Available to DSCC SMD 5962-92152 Low Cost High Voltage Operation: Single Supply: +8V to +60V Dual Supply: ±4V to±30V High Output Current: 3 Amp Continuous High Speed: 10V/ μS Low Quiescent Current: 20 mA Typ. Adjustable Current Limits Thermal Shutdown Monolithic Technology Enable/Status Pin For Output Disable Control 181 HIGH VOLTAGE/HIGH CURRENT OPERATIONAL AMPLIFIER Servo Driver Actuator Driver Audio Amplifier Power Supplies +VIN -VIN ILIM E/S -VCC +VCC OUTPUT N/C M.S.KENNEDY CORP. MSK181ZMSK181 DESCRIPTION: The MSK181 is a high power monolithic operational amplifier ideal for use with a wide variety of loads. With operation from either single or dual supplies, the MSK181 offers excellent design flexibility. Power dissipation is kept to a minimum with a quiescen t current rating of only 20mA, while 3 Amps of continuous available output current makes the MSK181 a very good low cost choice for motor drive circuits and audio amplification. The MSK181 is internally protected against current overloads and overtemperature conditions. Current limit can also be user-selected through the use of a resistor/potentiometer or voltage out/current out DAC. The MSK181 is packaged in a hermetically sealed 8 pin power dip and the MSK181Z is offered with bolt down tabs for applications that require heat sinking. EQUIVALENT SCHEMATIC PIN-OUT INFORMATIONTYPICAL APPLICATIONS 8548-1 Rev. M 8/141 MIL-PRF-38534 AND 38535 CERTIFIED FACILITY
Input Offset Voltage Drift Input Bias Current Input Offset Current Input Impedance Input Capacitance Common Mode Rejection Ratio Input Voltage Noise Density OUTPUT Output Current Current Limit Output Disable Time Output Enable Time TRANSFER CHARACTERISTICS Slew Rate Open Loop Voltage Gain Settling Time ±0.1% Max. ±30 ±20 ±23 ±10 ±500 ±50 1.650 -29 60V ±29.5V +27V/-29V Internal Protection (See Application Note) Total Supply Voltage Output Current (within S.O.A.) Input Voltage (Differential) Input Voltage (Common Mode) Junction Temperature -65°C to +150°C 300°C -40°C to +125°C -25°C to +85°C 2.5°C/W ABSOLUTE MAXIMUM RATINGS TST TLD TC RTH VCC ±IOUT VIND VIN T J Storage Temperature Range Lead Temperature Range (10 seconds) Case Operating Temperature (MSK181G) See Note 6 (MSK181) Thermal Resistance Junction to Case VIN=0V VIN=0V VIN=0V VIN=OV f=DC f=DC (-VCC )-0.1≤ VIN ≤ (+VCC )-3V f=1KHZ IOUT=0.6A IOUT=3.0A DC=Continuous RCL=34KΩ 0.1% VE/S High- Output Enabled E/S Open or High VE/S Low- Output Disabled E/S Forced Low IE/S High- Output Enabled E/S Open or High IE/S Low- Output Disabled E/S Forced Low AV=1 VOUT= 50Vp-p R L=500Ω VOUT=±25V R L=1KΩ AV=10 50V Step Group A Subgroup 2,3 Typ. ±17 ±19 ±30 ±100 ±28 ±26 1.5 -65 -70 Min. ±27 ±25.5 1.350 -27.5 6.0 Min. ±26 ±24 1.350 -27.5 5.0 Max. ±30 ±23 ±15 ±750 ±75 1.650 -29 Typ. ±17 ±30 ±100 ±28 ±26 1.5 -65 -70 Units V mA mA mA mV μV/°C nA nA Ω pF dB nV/√HZ V V A A V V μA μA μS μS V/μS dB MSK181G MSK181 Parameter Test Conditions ELECTRICAL SPECIFICATIONS Quiescent Current Quiescent Current VIN=0V Shutdown Mode VIN=0V Shutdown Input Output Voltage Swing Unless otherwise specified ±VCC=±30VDC and E/S pin is open. Devices shall be capable of meeting the parameter, but need not to 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 ('G' suffix) shall be 100% tested to subgroups 1,2,3 and 4. Subgroup 1,4 T A=TC=+25°C Subgroup 2 TA=TC=+125°C Subgroup 3 TA=TC=-40°C Refer to SMD 5962-92152 for electrical parameters for devices purchased as such. The operating temperature range is -55° to +125°C if the device is powered. The minimum cold start temperature is -40°C. Continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle. Internal solder reflow temperature is 180°C, do not exceed. NOTES: 8548-1 Rev. M 8/14
POWER SUPPLIES: The MSK181 maximum total supply voltage is specified as 60V. However, dual and unbalanced power supply operation is permissible as long as total supply voltage does not exceed 60V. POWER SUPPLY BYPASSING: Power supply terminals 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 0.1μF ceramic capacitor in parallel with a 10 μF tantalum capacitor for each power supply pin to ground. In addition, it is recommended that a 0.01μF capacitor be placed between ±VCC as close to the MSK181 as possible. COMPENSATION: For normal operation output compensation is not typically required. However, if the MSK181 is intended to be driven into current limit the user may find that an R/C network is required. A snubber network from the output to ground will provide sta- bility. If driving large capacitive or inductive loads, a snubber network will also enhance stability. Typically 3Ω to 10Ω in se- ries with 0.01μF is acceptable. CURRENT LIMIT: The MSK181 offers accurate, user-selectable current limit. Un- like typical designs that use a power resistor in series with the output to sense load, the MSK181 senses the load indirectly and therefore does not require a resistor to handle the full output current. Current limit is selected by controlling the input to the I LIM pin. The easiest method is to use a resistor or potentiometer con- nected between -VCC and the ILIM pin. Use the following equa- tion to select proper resistor value: 71,250 I LIM A low level control signal (0-330μA) can also be used to con- trol the current level digitally. If the pin is left open, the current is programmed to OA, while connecting I LIM directly to -VCC sets the output current to it's maximum, typically 5A. The MSK181 is equipped with thermal protection circuitry that protects the amplifier from damage caused by excessive junction temperature. The output is disabled when the junction temperature reaches approximately 160°C. After the junction temperature cools to approximately 140°C, the output is again enabled. The thermal protection may cycle on and off depend- ing on the output load and signal conditions; this may have an undesirable effect on the load. It should be noted that even though this internal protection circuitry does protect against overload conditions, it does not take the place of proper heat sinking. For reliable operation, junction temperature should be limited to 150°C, maximum. TYPICAL CONNECTION DIAGRAM SAFE OPERATING AREA: The safe operating area curve is a graphical representation of the power handling capability of the amplifier under various conditions. Power dissipation of the device is equal to the prod- uct of the voltage across the output transistor times the output current. As can be seen in the curve, safe operating current decreases with an increase in temperature as well as an in- crease in the voltage across the output transistor. Therefore, for maximum amplifier performance it is important to keep case temperature as low as possible and to keep ±VCC as close to the output rail as achievable. THERMAL PROTECTION: This pin actually has a dual function. First, when the pin is forced low, the output stage is disabled. Second, it can be monitored to determine if the device is in thermal shutdown. These functions can be used on the same device with either single or dual supplies. For normal operation, the E/S pin must be left open or pulled at least 2.4 volts above the negative rail. In noisy applications, a small value capacitor between the E/S pin and -VCC may be required. ENABLE/STATUS PIN: To disable the output, the user must pull the E/S pin low, no greater than 0.8V above -VCC. To once again enable the de- vice, the E/S pin must be brought at least 2.4 volts above -VCC or disconnected. It should be noted that when the E/S pin is high, the internal thermal shutdown is still active. If the E/S pin is used to monitor thermal shutdown, during normal operation the voltage on the E/S pin is typically 3.5V above -VCC. Once shutdown has occurred this voltage will drop to approximately 350mV above -VCC. -13.75KΩ Rcc= 8548-1 Rev. M 8/14
TYPICAL PERFORMANCE CURVES 5 8548-1 Rev. M 8/14
MIL-PRF-38534 Class G (REDUCED TEMP RANGE) DSCC SMD MSK181 MSK181G 5962-92152
ORDERING INFORMATION
8548-1 Rev. M 8/14 ESD TRIANGLE INDICATES PIN 1 WEIGHT=5.8 GRAMS TYPICAL ALL DIMENSIONS ARE SPECIFIED IN INCHES
MECHANICAL SPECIFICATIONS CONT'D MSK181Z Part Number MSK181Z MSK181GZ 5962-92152 Industrial MIL-PRF-38534 Class G (REDUCED TEMP RANGE) DSCC SMD Screening Level 8548-1 Rev. M 8/14 ESD TRIANGLE INDICATES PIN 1 WEIGHT=5.8 GRAMS TYPICAL ALL DIMENSIONS ARE SPECIFIED IN INCHES
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. Pleas visit our website for the most recent revision of this datasheet. M.S. Kennedy Corp. Phone (315) 701-6751 FAX (315) 701-6752 www.mskennedy.com 8 8548-1 Rev. M 8/14