Details, datasheet, quote on part number: MSK161
CategoryAnalog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers
DescriptionOperational Amplifier, High Power Amp W/programmable Current Limit
CompanyM.S. Kennedy
DatasheetDownload MSK161 datasheet
Find where to buy


Features, Applications

High Output Current Wide Supply Range Low Cost Class "C" Output Stage Wide Common Mode Range Low Quiescent Current Electrically Isolated Case Replaces PA61

The MSK is a high output current operational amplifier designed to drive resistive or reactive loads. The Class "C" output stage is protected by a user programmable current limit scheme. The MSK 161 is designed be a low cost solution for low frequency applications where crossover distortion is not critical. The MSK 161 can supply 10 amps of output current within its safe operating range and boasts a 16 KHz power bandwidth. A low junction to case thermal resistance of only 1.2C/W for the output devices keeps junction temperatures low when driving large load currents.

Programmable Power Supply Valve and Actuator Control Motor/Syncro Driver or DC Power Regulator

Output Positive Current Limit Positive Power Supply Non-Inverting Input Negative Current Limit NC Negative Power Supply Inverting Input

VCC IOUT VIN TC Supply Voltage 45V Output Current 10A Differential Input Voltage VCC -3V Case Operating Temperature Range (MSK -55C to+125C (MSK to +85C

TST Storage Temperature Range TLD Lead Temperature Range (10 Seconds) TJ Junction Temperature

Parameter STATIC Supply Voltage Range Quiescent Current Thermal Resistance INPUT Input Offset Voltage Input Bias Current Input Offset Current Input Impedance VIN=0V AV=10V/V

Common Mode Range OUTPUT Output Voltage Swing Output Current, Peak Settling Time Slew Rate Open Loop Voltage Gain Bandwidth Product

AV= -1, measured in false summing junction circuit. Guaranteed by design but not tested. Typical parameters are representative of actual device performance but 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. Subgroups 5 and 6 testing available upon request. TA=TC=+25C Subgroup 1,4 TA=TC=+125C Subgroup 2,5 TA=TC=-55C Subgroup 3,6

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.

The MSK 161 has an on-board current limit scheme designed to shut off the output drivers anytime output current exceeds a predetermined limit. The following formula may be used to determine the value of current limit resistance necessary to establish the desired current limit. RCL=(OHMs)=(0.65 volts/current limit in amps) - 0.01OHM The 0.01 ohm term takes into account any wire bond and lead resistance. Since the 0.65 volt term is obtained from the base emitter voltage drop of a bipolar transistor: the equation only holds true for operation at +25C case temperature. The effect that temperature has on current limit may be seen on the Current Limit vs. Case Temperature Curve in the Typical Performance Curves.

TJ=PD x (RJC + RCS + RSA) + TA Where TJ=Junction Temperature PD=Total Power Dissipation RJC=Junction to Case Thermal Resistance RCS=Case to Heat Sink Thermal Resistance RSA=Heat Sink to Ambient Thermal Resistance TC=Case Temperature TA=Ambient Temperature TS=Sink Temperature

In our example the amplifier application requires the output to drive a 20 volt peak sine wave across a 400 load for 50mA of peak output current. For a worst case analysis we will treat the 50mA peak output current as a D.C. output current. The power supplies are 40 VDC. 1.) Find Power Dissipation PD =[(quiescent current) x (VS-(VS))]+[(+VS-VO) x IOUT] =20.24W 2.) For conservative design, set TJ=+125C 3.) For this example, worst case 4.) RJC=1.8C/W from MSK 161 Data Sheet 5.) RCS=0.15C/W for most thermal greases 6.) Rearrange governing equation to solve for RSA RSA=((TJ-TA)/PD) - (RJC) - (RCS) (0.15C/W) =1.76C/W The heat sink in this example must have a thermal resistance of no more than 1.76C/W to maintain a junction temperature of no more than +125C.

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 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 MSK 161, 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 7 and 12).


Related products with the same datasheet
Some Part number from the same manufacture M.S. Kennedy
MSK161B Operational Amplifier, High Power Amp W/programmable Current Limit
MSK162 Operational Amplifier, Ultra High Voltage Amp With Internal Comp
MSK164 Operational Amplifier, Ultra High Voltage Amp With Offset Null
MSK165 Ultra High Voltage Dual Operational Amplifier
MSK166 Ultra High Voltage Operational Amplifier
MSK171 High Power Dual Operational Amplifier
MSK173B High Power Dual Operational Amplifier
MSK181 High Current Operational Amplifier
MSK1900 High Performance High Voltage Video Display Driver
MSK1901 Video Amplifier, 24 Pin Quad Flatpack
MSK1902-0 Video Amplifier, 30 Pin PWR Flatpack
MSK1911 High Performance High Voltage Video Display Driver
MSK1922 Ultra High Speed/ Voltage Video Amplifier
MSK1932-0 Video Amplifier, 22 Pin Dip/flatpack
MSK1932D-0 Ultra High Speed/ Voltage Video Amplifier

MSK1932D-0 : Ultra High Speed/ Voltage Video Amplifier

MSK4301HS : 29 Amp, 75v, 3 Phase MOSFET Bridge With Intelligent Integrated Gate Drive

MSK5046-3.0HRH : Radiation Hardened HIGH Efficiency, 5 AMP Switching Regulators

5962-8956810QTC : HIGH Speed/high Voltage Video Amplifier

MSK5150-5.0ZU : ADJUSTABLE POSITIVE LDO REGULATOR, 0.6 V DROPOUT, PSFM5 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Adjustable / Variable ; Package Type: Other, BENT DOWN, SIP-5 ; Life Cycle Stage: ACTIVE ; IOUT: 5 amps ; Dropout Voltage: 0.6000 volts

MSK5205-TU : DUAL OUTPUT, FIXED MIXED LDO REGULATOR, SFM5 Specifications: Regulator Type: Low Dropout ; Output Voltage Type: Fixed ; Package Type: Other, TOP TAB, BENT DOWN, 5 PIN ; Life Cycle Stage: ACTIVE ; Output Voltage: 14.7 to 15.3 volts ; IOUT: 3 amps ; VIN: 16 to 26 volts ; Dropout Voltage: 0.6000 volts

MSK5232-2.5EG : 1.5 V FIXED POSITIVE LDO REGULATOR, 0.625 V DROPOUT, SSO3 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, GULL WING, HERMETIC SEALED, SMT-3 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.47 to 1.53 volts ; IOUT: 3 amps ; VIN: 2.5 to 26 volts ; Dropout Voltage: 0.6250 volts

MSK5920-1.8HRHGW : 1.5 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, CSFM5 Specifications: Regulator Type: Low Dropout ; Output Polarity: Positive ; Output Voltage Type: Fixed ; Package Type: Other, HERMETIC SEALED, SIP-5 ; Life Cycle Stage: ACTIVE ; Output Voltage: 1.46 to 1.54 volts ; VIN: 2.9 to 6.5 volts ; Dropout Voltage: 0.4000 volts

Same catergory

ADG708 : CMOS, Low Voltage, Single 8 to 1 Multiplexer. 5.5 V Single Supply 3 V Dual Supply 3 On-Resistance 0.75 On-Resistance Flatness 100 pA Leakage Currents 14 ns Switching Times Single 8-to-1 Multiplexer ADG708 Differential 4-to-1 Multiplexer ADG709 16-Lead TSSOP Package Low Power Consumption TTL/CMOS-Compatible Inputs APPLICATIONS Data Acquisition Systems Communication Systems Relay Replacement Audio.

CAT522 : Dual 8-Bit Dpp, Programmable Voltage Application. Configured Digitally Programmable Potentiometer (DPPTM): Programmable Voltage Applications APPLICATIONS s Automated product calibration. s Remote control adjustment of equipment s Offset, gain and zero adjustments in self- s Independent reference inputs s Non-volatile NVRAM memory wiper storage s Output voltage range includes both supply rails s 2 independently.

EClamp2340C : Emi Filter And Esd Protection For Color LCD Interfaces flip Chip Bidirectional Emi/rfi Filter With Integrated Esd Protection ESD Protection to Iec 61000-4-2 (ESD) Level 4 15 KV (air), 8 KV (contact) Filter Performance: 20 DB Minimum Attenuation 800 MHZ to 3 GHZ TVS Working Voltage: 5 V Resistor: 100 Ohms Input Capacitance: 18 PF (VR = 2.5 VDC) Protection.

EL8200 : op Amp, Dual, 200MHz, Rail-to-rail With Enable The EL8200, EL8201, And EL8401 Represent Rail-to-rail Amplifiers With a -3dB Bandwidth of 200MHz And Slew Rate of 200V/s. Running Off a Very Low Supply Current of 2mA Per Channel, The EL8200, EL8201, And EL8401 Also Feature Inputs That go to 0.15V Below The Vs- Rail..

HS1-26CT31RH : Radiation Hardened Quad Differential Line Driver. Radiation Hardened Quad Differential Line Driver The Intersil is a quad differential line driver designed for digital data transmission over balanced lines and meets the requirements of EIA standard RS-422. Radiation hardened CMOS processing assures low power consumption, high speed, and reliable operation in the most severe radiation environments.

LTC1992-5 : Gain of 5 Fully Differential Input/output Amplifier/driverthe LTC 1992-5 is a Fully Differential Amplifier With a Fixed Gain of 5. The LTC1992-5 Has a Separate Internal Common Mode Feedback Path For Better Common Mode Noise Rejection, Outstanding Output Gain And Phase Balancing And Reduced Second Order Harmonics.

MSM56V16160DH : 2-bank X 524,288-word X 16-bit Synchronous Dynamic RAM. The 16-bit synchronous dynamic RAM, fabricated in Oki's CMOS silicon-gate process technology. The device operates 3.3 V. The inputs and outputs are LVTTL compatible. Silicon gate, quadruple polysilicon CMOS, 1-transistor memory cell 16-bit configuration 3.3 V power supply, 0.3 V tolerance Input : LVTTL compatible Output : LVTTL compatible Refresh.

SY10EL16VDKCTR : Enhanced Differential Receiver. 3.3V and 5V power supply options 250ps propagation delay Very high voltage gain vs. standard or EL16V Ideal for Pulse Amplifier and Limiting Amplifier applications Data synchronous Enable/Disable (/EN) on QHG and /QHG provides for complete glitchless gating of the outputs Ideal for gating timing signals Complete solution for high quality, high frequency.

TLV2462Y : Family of Low-power Rail-to-rail Input/output Operational Amplifiers With Shutdown.

UC1854 : Power. High Power Factor Preregulator. Control Boost PWM to 0.99 Power Factor Limit Line Current Distortion To <5% World-Wide Operation Without Switches Feed-Forward Line Regulation Average Current-Mode Control Low Noise Sensitivity Low Start-Up Supply Current Fixed-Frequency PWM Drive Low-Offset Analog Multiplier/Divider 1A Totem-Pole Gate Driver Precision Voltage Reference The UC1854.

ISL95810UIU8 : Single Digitally Controlled Potentiometer (XDCP), Low Noise/Low Power/I2C Bus/256 Taps The ISL95810 integrates a digitally controlled potentiometer (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometer is implemented with a combination of resistor elements and CMOS switches. The position of the wiper is controlled by the user.

ISL54053 : The Intersil ISL54053 device is a low ON-resistance, low voltage, bidirectional, single pole/double throw (SPDT) analog switch designed to operate from a single +1.8V to +5.5V supply. Targeted applications include battery powered equipment which benefit from low rON (0.8Ω) and fast switching speeds (tON = 24ns, tOFF = 10ns). The digital logic input.

TLV431 : ZXCT1080 High Voltage High-side Current Monitor he ZXCT1080 operates from a positive power rail and the internal . The ZXCT1080 has been designed to allow it to operate with 5V supply rails while .

LT1014D-EP : Enhanced Product Quad Precision Operational Amplifier The LT1014D is a quad precision operational amplifier with 14-pin industry-standard configuration. It low offset-voltage temperature coefficient, high gain, low supply current, and low noise. The LT1014D can be operated with both dual 15-V and single 5-V power supplies. The common-mode input voltage.

0-C     D-L     M-R     S-Z