MSK2541

MSK2541 MSK | Alldatasheet

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4707 Dey Road Liverpool, N.Y. 13088 (315) 701-6751 MIL-PRF-38534 CERTIFIED Servo Amplifer Motor Driver Audio Amplifier Programmable Power Supply Bridge Amplifier FEATURES: Available as SMD #5962-9083801 HX 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: The MSK 2541 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 MSK 2541 has internal current limit circuitry to protect the amplifier and load from transients. The MSK 2541 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. TYPICAL APPLICATIONS

1 Output B

8 Inverting Input B

2 Positive Power Supply

7 Non-Inverting Input B

3 Non-Inverting Input A

6 Negative Power Supply

4 Inverting Input A

5 Output A

Rev. B 8/00 ISO 9001 CERTIFIED BY DSCC EQUIVALENT SCHEMATIC DUAL HIGH POWER OP-AMP M.S. KENNEDY CORP

1, 2, 3 2, 3 2, 3 2, 3 5, 6 5, 6 5, 6 Parameter STATIC Supply Voltage Range Quiescent Current INPUT Input Offset Voltage Input Offset Voltage Drift Input Capacitance Input Impedance Common Mode Rejection Ratio Power Supply Rejection Ratio OUTPUT Settling Time Power Bandwidth TRANSFER CHARACTERISTICS Slew Rate THERMAL RESISTANCE θJC (Junction to Case) θJC θJC θJC θJA (Junction to Ambient) Test Conditions Total - Both Amplifiers VIN = 0V VIN = 0V VIN = 0V VCM = 0V Either Input F = DC F = DC VCM = ±22V VCC = ±10V to ±40V RL = 5.6Ω F ≤ 10 KHz RL = 10Ω F = 10 KHz RL = 5.6Ω F ≤ 10 KHz RL = 10Ω F = 10 KHz 0.1% 2V step RL = 10Ω VO = 20 VRMS VOUT = ±10V RL = 10Ω One Amplifier, DC Output One Amplifier, AC Output F > 60 Hz Both Amplifiers, DC Output Both Amplifiers, AC Output F > 60 Hz No Heat Sink Max. ±40 ±60 ±10 ±100 1.9 1.5 1.2 1.0 Typ. ±35 ±40 ±1.0 ±15 ±10 2.0 1012 113 ±29 100 1.4 1.25 0.9 0.8 Min. ±10 ±28 Typ. ±35 ±40 ±0.1 ±15 ±10 2.0 1012 113 ±29 ±31 100 1.4 1.25 0.9 0.8 Min. ±10 ±28 ±30 ±3.0 ±VCC Voltage Supply ±40V IOUT Peak Output Current See S.O.A. VIN Differential Input Voltage ±VCC VIN Common Mode Input Voltage ±VCC TC Case Operating Temperature Range MSK 2541B -55° to +125°C MSK 2541 -40° to +85°C ABSOLUTE MAXIMUM RATINGS TST Storage Temperature Range -65° to +150°C TLD Lead Temperature Range 300°C (10 Seconds) PD Power Dissipation 125W TJ Junction Temperature 150°C Units V mA mV µV/°C pA nA pA nA pF W dB dB V V A A µS KHz V/µS dB dB °C/W °C/W °C/W °C/W °C/W Rev. B 8/00 ELECTRICAL SPECIFICATIONS Military Industrial Max. ±40 ±60 ±1.0 ±30 ±50 ±50 1.9 1.5 1.2 1.0 NOTES: Unless otherwise specified: RCL = 0Ω, ±VCC = ±34 VDC, all specs are per amplifier. Electrical specifications are derated for power supply voltages other than ±34 VDC. 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=+25°C Subgroup 2, 5 TA=TC=+125°C Subgroup 3, 6 TA=TC=-55°C Input Bias Current Input Bias Current VCM = 0V Output Current Output Voltage Swing Open Loop Voltage Gain F = 10 Hz RL = 10 KΩ MSK 2541B MSK 2541

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 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 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 PD = [(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.) RθJC = 1.2°C/W typically 5.) RθCS = 0.15°C/W for most thermal greases 6.) Rearrange governing equation to solve for RθSA RθSA = (TJ - TA) / PD - (RθJC) - (RθCS) = ≅.66°C/W The heat sink in this example must have a thermal resistance of no more than .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 MSK 2541 maximum supply voltage is specified as ±40V. However, single sided or unbalanced power supply operation is permissible as long as the total power supply volt- age 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 MSK 2541 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 ca- pacitor in parallel with a 4.7 microfarad tantalum capacitor from each power supply pin to ground. It is also a good prac- tice with very high power op-amps, such as the MSK 2541, 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 cir- cuit protection scheme. When the output is directly shorted to ground, the power supply voltage is applied across the out- put transistor that is conducting. If the power supplies were set to ±40V and the output was shorted to ground, the tran- sistor that is conducting current would see 40V from its emit- ter 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, transis- tor junction temperature and secondary breakdown limitations are all incorporated into the safe operating area curves. All applications should be checked against the S.O.A. curves to ensure high M.T.T.F. Rev. B 8/00

Rev. B 8/00 TYPICAL PERFORMANCE CURVES

Rev. B 8/00 CLAMPING OUTPUT FOR EMF-GENERATING LOADS PROGRAMMABLE VOLTAGE SOURCE ISOLATING CAPACITVE LOADS PARALLELED OPERATION, EXTENDED S.O.A.

Rev. B 8/00 MSK2541 MSK2541B 5962-9083801HX Industrial Military-MIL-PRF-38534 DSCC - SMD Part Number Screening Level

ORDERING INFORMATION

M.S. Kennedy Corp.

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. MECHANICAL SPECIFICATIONS ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE SPECIFIED.