MSK2541 ANAREN | Alldatasheet

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Technical content

FEATURES:

  • Available as SMD #5962-9083801 HX and 5962-9083803HX
  • High Output Current - 10 Amps Peak
  • Wide Power Supply Range - ±10V to ±40V
  • On Board Current Limit
  • FET Input
  • Isolated Case
  • Second Source for OMA 2541SKB DESCRIPTION: T he MSK2541 is a high power dual monolithic amplifier ideally suited for high power amplification and magnetic deflection applications. This amplifier is capable of operation at a supply voltage rating of 80 volts and can deliver guaranteed continuous output currents up to 5A per amplifier. The MSK2541 has internal current limit circuitry to protect the amplifier and load from transients. The MSK2541 is available in a hermetically sealed 8 pin TO3 package that is isolated from internal circuitry. This allows for convenient bolt down heat sinking when necessary. DUAL HIGH POWER OP-AMP MIL-PRF-38534 AND 38535 CERTIFIED FACILITY 2541

1 Output B

2 Positive Power Supply

3 Non-Inverting Input A

4 Inverting Input A

8 Inverting Input B

7 Non-Inverting Input B

6 Negative Power Supply

5 Output A

  • Servo Amplifer
  • Motor Driver
  • Audio Amplifier
  • Programmable Power Supply
  • Bridge Amplifier EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS PIN-OUT INFORMATION 8548-128 Rev. J 9/17

2 8548-128 Rev. J 9/17 ABSOLUTE MAXIMUM RATINGS ELECTRICAL SPECIFICATIONS TC Case Operating Temperature Range NOTES: 1 Unless otherwise specified: ±VCC = ±34 VDC, all specs are per amplifier. 2 Electrical specifications are derated for power supply voltages other than ±34 VDC. 3 AV = -1, measured in false summing junction circuit. 4 Guaranteed by design but not tested. Typical parameters are for reference only. 5 Industrial grade devices shall be tested to subgroups 1 and 4 unless otherwise specified. 6 Military grade devices ('B' suffix) shall be 100% tested to subgroups 1, 2, 3 and 4. 7 Subgroup 5 and 6 testing available upon request.

8 Subgroup 1, 4 TA = TC = +25°C

Subgroup 2, 5 TA = TC = +125°C Subgroup 3, 6 TA = TC = -55°C 9 Reference DSCC SMD 5962-9083801 and 5962-9083803 for electrical specifications for devices purchased as such. 10 Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle. 11 Internal solder reflow temperature is 180°C, do not exceed. Parameter Test Conditions Group A Subgroup MSK2541B MSK2541 5 Units STATIC Supply Voltage Range 2 4 - ±10 ±35 ±40 ±10 ±35 ±40 V Quiescent Current Total - Both Amplifiers VIN = 0V 1, 2, 3 - ±40 ±60 - ±40 ±60 mA INPUT Input Offset Voltage VIN = 0V 1 - ±0.1 ±1.5 - ±1.0 ±10 mV Input Offset Voltage Drift VIN = 0V 2, 3 - ±15 ±50 - ±15 - µV/°C Input Bias Current 4 VCM = 0V 1 - ±4 ±50 - ±4 ±100 pA Either Input 2, 3 - ±10 ±150 - ±10 - nA Input Offset Current 4 VCM = 0V 1 - 2.0 30 - 2.0 30 pA Input Capacitance - - 5 - - 5 - pF Imput Impedance 4 F = DC - - 1012 - - 1012 - W Common Mode Rejection Ratio 4 F = DC VCM = ±22V - 95 113 - 90 113 - dB Power Supply Rejection Ratio 4 VCC = ±10V to ±40V - - 90 - - 90 - dB OUTPUT Output Voltage Swing RL = 5.6Ω F ≤ 10 KHz 4 ±28 ±29 - ±28 ±29 - V RL = 10Ω F = 10 KHz 5, 6 ±30 ±31 - - - - V Output Current RL = 5.6Ω F ≤ 10 KHz 4 ±5 ±8 - ±5 ±8 - A RL = 10Ω F = 10 KHz 5, 6 ±3.0 - - - - - A Settling Time 3 4 0.1% 2V step - - 2 - - 2 - µS Power Bandwidth RL = 10Ω VO = 20 VRMS 4 45 55 - 40 50 - KHz TRANSFER CHARACTERISTICS Slew Rate VOUT = ±10V RL = 10Ω 4 6 10 - 6 10 - V/µS Open Loop Voltage Gain 4 F = 10 Hz RL = 10 KΩ 4 95 100 - 90 100 - dB THERMAL RESISTANCE 4 θJC (Junction to Case) One Amplifier, DC Output - - 1.4 1.9 - 1.9 2.2 °C/W θJC One Amplifier, AC Output F > 60 - - 1.25 1.5 - 1.7 1.8 °C/W θJC Both Amplifiers, DC Output - - 0.9 1.2 - 1.2 1.5 °C/W θJC Both Amplifiers, AC Output F > 60 - - 0.8 1.0 - 1.1 1.3 °C/W θJA (Junction to Ambient) No Heat Sink - - 30 - - 30 - °C/W

To select the correct heat sink for your application, refer to the thermal model and governing equation below. Thermal Model: Governing Equation: TJ = PD X (RθJC + RθCS + RθSA) + TA Where T J = Junction Temperature P D = Total Power Dissipation R θJC = Junction to Case Thermal Resistance R θCS = Case to Heat Sink Thermal Resistance R θSA = Heat Sink to Ambient Thermal Resistance T C = Case Temperature T A = Ambient Temperature T S = Sink Temperature Example: In our example the amplifier application requires each output to drive a 20 volt peak sine wave across a 10 ohm load for 2 amps of output current. For a worst case analysis we will treat the 2 amps peak output current as a D.C. output current. The power supplies are ±35 VDC. 1.) Find Power Dissipation P D = [(quiescent current) X (+VCC - (-VCC))] + [(VCC - VO) X IOUT] = 2.1W + 60W = 62.1W 2.) For conservative design, set TJ = +150°C 3.) For this example, worst case TA = +25°C 4.) R θJC = 1.2°C/W typically 5.) R θCS = 0.15°C/W for most thermal greases 6.) Rearrange governing equation to solve for RθSA R θSA = (T J - TA) / PD - (RθJC) - (RθCS) = ≅0.66°C/W The heat sink in this example must have a thermal resistance of no more than 0.66°C/W to maintain a junction temperature of no more than +150°C. Since this value of thermal resistance may be difficult to find, other measures may have to be taken to decrease the overall power dissipation. Refer to the "Heat Sinking Options" application note offered by MSK. POWER SUPPLY CONNECTIONS The MSK2541 maximum supply voltage is specified as ±40V. However, single sided or unbalanced power supply operation is permissible as long as the total power supply voltage does not exceed 80V. Caution should be exercised when routing high current printed circuit paths. Generally, these paths should not be placed near low level, high impedance input circuitry to avoid oscillations. During prototype evaluation, power supply current limiting is strongly advised to avoid damaging the device. See the application note entitled "Current Limit" for an explanation of the limitations of the MSK2541 on board current limit. POWER SUPPLY BYPASSING Both the negative and the 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 capacitor in parallel with a 4.7 microfarad tantalum capacitor from each power supply pin to ground. It is also a good practice with very high power op-amps, such as the MSK2541, to place a 30-50 microfarad non-electrolytic capacitor with a low effective series resistance in parallel with the other two power supply decoupling capacitors. This capacitor will eliminate any peak output voltage clipping which may occur due to poor power supply load regulation. All power supply decoupling capacitors should be placed as close to the package power supply pins as possible (pins 3 and 6). CURRENT LIMIT The internal current limit should not be used as a short circuit protection scheme. When the output is directly shorted to ground, the power supply voltage is applied across the output transistor that is conducting. If the power supplies were set to ±40V and the output was shorted to ground, the transistor that is conducting current would see 40V from its emitter to its collector. Referring to the safe operating area curve shows when [VCC-VOUT]=40V, the maximum safe output current (IO) at TC=25°C is 1.5A. In this case the amplifier would not be protected by the internal current limit and would probably be damaged. The internal current limit is provided as a protection against unintentional load conditions which may require larger amounts of load current than the amplifier is rated for. SAFE OPERATING AREA The safe operating area curve is a graphical representation of the power handling capability of the amplifier under various conditions. The wire bond current carrying capability, transistor junction temperature and secondary breakdown limitations are all incorporated into the safe operating area curves. All applications should be checked 3 8548-128 Rev. J 9/17 APPLICATION NOTES

4 8548-128 Rev. J 9/17 TYPICAL PERFORMANCE CURVES

CLAMPING OUTPUT FOR EMF-GENERATING LOADS PROGRAMMABLE VOLTAGE SOURCE ISOLATING CAPACITVE LOADS PARALLELED OPERATION, EXTENDED S.O.A. 5 8548-128 Rev. J 9/17 APPLICATION CIRCUITS

WEIGHT=15.5 GRAMS TYPICAL ALL DIMENSIONS ARE SPECIFIED IN INCHES 6 8548-128 Rev. J 9/17 MECHANICAL SPECIFICATIONS

ORDERING INFORMATION

MSK2541B MIL-PRF-38534, Class H 5962-9083801HX DSCC-SMD 5962-9083803HX DSCC-SMD

7 8548-128 Rev. J 9/17

REVISION HISTORY

REV STATUS DATE DESCRIPTION I Released 07/14 Format updates, assigned form number, added internal solder note, remove E version. J Released 09/17 Clarify GBD specification & update format The information contained herein is believed to be accurate at the time of printing. Anaren, MSK products 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. ANAREN, MSK Products www.anaren.com/msk