541 [MSK]
HIGH POWER OP-AMP; 高功率运算放大器
| 型号： | 541 |
| 厂家： | 
M.S. KENNEDY CORPORATION |
| 描述： | HIGH POWER OP-AMP |
| 文件： | 总7页 (文件大小：342K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ISO 9001 CERTIFIED BY DSCC
HIGH POWER
HIGH POWER
541
OOPP--AAMMPP
M.S KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
SERIES
(315) 701-6751
MIL-PRF-38534 QUALIFIED
FEATURES:
Available as SMD #5962-8870101
High Output Current - 10 Amps Peak
Wide Power Supply Range - ±10V to ±40V
Programmable Current Limit
FET Input
MSK145
MSK146
Isolated Case
Replacement for OMA 541SKB - MSK541
OMA 541SDB - MSK146
OMA 541SZB - MSK147
MSK147
MSK541
DESCRIPTION:
The MSK 541 Series is a high power 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, making the 541 series an excellent low cost choice for motor drive
circuits. The amplifier and load can be protected from fault conditions through the use of internal current limit
circuitry that can be user programmed with a single external resistor. The MSK 541 is pin compatible with popular
op-amps such as the Burr-Brown OPA501, OPA511, OPA512, OPA541 and 3573. The MSK 541 is available in a
hermetically sealed 8 pin TO-3 package. Other package styles are also available for a wide range of applications.
The MSK 145 is available in a 6 pin SIP Package. The MSK 146 is an 8 pin Power DIP Package and the MSK 147
is available in an 8 pin Power Z-TAB Package for applications requiring bolt down heat sinking.
MSK 541 ONLY
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Servo Amplifer
Motor Driver
Audio Amplifier
Programmable Power Supply
PIN-OUT INFORMATION
1 Current Sense
5 Inverting Input
6 Negative Power Supply
7 No Connection
8 Output Drive
2 No Connection
3 Positive Power Supply
4 Non-Inverting Input
The above pin out table is for the MSK 541 (TO-3). Refer to the
mechanical specifications page for the pin out information of addi-
tional package styles.
1
Rev. C 3/01
ABSOLUTE MAXIMUM RATINGS
±VCC Supply Voltage
±40V
See S.O.A.
±VCC
TST
TLD
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
-65° to +150°C
300°
IOUT
VIN
VIN
Peak Output Current
Differential Input Voltage
Common Mode Input Voltage
Thermal Resistance-Junction to Case
MSK 541
PD
TJ
TC
Power Dissipation
125W
150°C
±VCC
Junction Temperature
Case Operating Temperature Range
Military Versions
RTH
1.9° C/W
1.2° C/W
1.2° C/W
1.2° C/W
-55°C to +125°C
-40°C to +85°C
MSK 145
MSK 146
MSK 147
Industrial Versions
9
ELECTRICAL SPECIFICATIONS
Military
Group A
Industrial
5
Parameter
Test Conditions
Min.
Typ. Max. Min. Typ. Max. Units
Subgroup
STATIC
±10
-
±35 ±40 ±10 ±35 ±40
V
mA
Supply Voltage Range 2
Quiescent Current
4
-
±20 ±30
-
±20 ±35
VIN = 0V
1, 2, 3
INPUT
-
-
-
-
-
±0.1 ±1.0
±15 ±50
±4 ±50
±0.2 ±10
-
-
-
-
-
±1.0 ±10
mV
µV/°C
pA
nA
pA
Input Offset Voltage
Input Offset Voltage Drift
VIN = 0V
VIN = 0V
VCM = 0V
Either Input
1
2, 3
1
2, 3
1
2, 3
±15
-
±4 ±100
4
Input Bias Current
±0.2
2.0
-
-
30
-
2.0
-
30
20
4
Input Offset Current
VCM=0V
-
-
nA
-
-
95
-
-
5
10
113
90
10
-
-
-
-
-
-
-
90
-
-
5
10
113
90
10
-
-
-
-
pF
W
dB
dB
Input Capacitance
Input Impedance
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Noise Voltage
-
-
-
-
-
12
12
F = DC
4
F = DC VCM = ±22V
VCC = ±10V to ±40V
F = 10 Hz to 1 KHz
-
µVRMS
OUTPUT
±28
±30
±5
±3.0
-
±29
±31
±8
-
2
55
-
-
-
-
-
-
±28 ±29
-
-
-
-
-
-
V
V
A
A
µS
KHz
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
4
5, 6
4
5, 6
-
Output Voltage Swing
-
±5
-
-
±8
-
Output Current
3
-
2
Settling Time
4
45
40
50
Power Bandwidth
RL = 10Ω VO = 20 VRMS
4
TRANSFER CHARACTERISTICS
6
95
85
10
100
-
-
-
-
6
90
-
10
100
-
-
-
-
V/µS
dB
dB
Slew Rate
VOUT = ±10V RL = 10Ω
F = 10 HZ RL = 10 KΩ
4
4
5, 6
4
Open Loop Voltage Gain
NOTES:
1
2
3
4
5
6
7
8
Unless otherwise specified RCL = 0Ω, ±VCC = ±34 VDC
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
Subgroup 2, 5
Subgroup 3, 6
TA = TC = +25°C
TA = TC = +125°C
TA = TC =
-55°C
9
Rereference DSCC SMD 5962-8870101 for electrical specifications for devices purchased as such.
2
Rev. C 3/01
APPLICATION NOTES
HEAT SINKING
CURRENT LIMIT
To select the correct heat sink for your application, refer to the
thermal model and governing equation below.
The MSK 541 has an on-board current limit scheme designed
to limit the output drivers anytime output current exceeds a
predetermined limit. The following formula may be used to
determine the value of the current limit resistance necessary to
establish the desired current limit.
Thermal Model:
RCL (OHMs) = (0.809 volts / current limit in amps) - 0.057 OHM
The 0.057 OHM term takes into account any wire bond and
lead resistance. Since the 0.809 volt term is obtained from the
base emitter voltage drop of a bipolar transistor, the equation
only holds true for operation at +25°C case temperature. The
effect that temperature has on current limit may be seen on the
Current Limit vs. Case Temperature Curve in the Typical Perfor-
mance Curves.
Current Limit Connection
Governing Equation:
TJ = PD X (RθJC + RθCS + RθSA) + TA
Where
TJ
PD
= Junction Temperature
= Total Power Dissipation
RθJC
RθCS
= Junction to Case Thermal Resistance
= Case to Heat Sink Thermal Resistance
RθSA = Heat Sink to Ambient Thermal Resistance
TC
TA
TS
= Case Temperature
= Ambient Temperature
= Sink Temperature
See "Application Circuits" in this data sheet for additional
information on current limit connections.
Example: (TO-3 PACKAGE)
POWER SUPPLY BYPASSING
In our example the amplifier application requires the output to
drive a 20 volt peak sine wave across a 5 ohm load for 4 amps of
output current. For a worst case analysis we will treat the 4 amps
peak output current as a D.C. output current. The power supplies
are ±35 VDC.
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 practice
with very high power op-amps, such as the MSK 541, to place
a 30-50 microfarad nonelectrolytic capacitor with a low effec-
tive series resistance in parallel with the other two power sup-
ply 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 for the MSK 541).
1.) Find Power Dissipation
PD = [(quiescent current) X (+VCC - (VCC))] + [(VS - VO) X IOUT]
= (30 mA) X (70V) + (15V) X (4A)
= 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 for the TO-3 package
5.) RθCS = 0.15°C/W for most thermal greases
6.) Rearrange governing equation to solve for RθSA
RθSA
= (TJ - TA) / PD - (RθJC) - (RθCS)
= (150°C - 25°C) / 62.1W - (1.2°C/W) - (0.15°C/W)
= 0.66°C/W
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.B.F.
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.
3
Rev. C 3/01
APPLICATION CIRCUITS
Clamping Output for EMF-Generating Loads
Isolating Capacitive Loads
Replacing OPA501 with MSK 541
Motor Current a Function of VIN
Programmable Torque Circuit
When replacing the OPA501, OPA511, OPA512 or 3573
with the MSK 541, it is not necessary to make any changes
in the current limit scheme. Since pin 2 is not connected
in the MSK 541, the current limit resistor connected from
pin 1 to pin 2 can be left in the circuit or removed.
The linear relationship of torque output to current input
of the modern torque motor makes this simple control cir-
cuit ideal for many material processing and testing appli-
cations. The sense resistor develops a feedback voltage
proportional to motor current and the small signal proper-
ties of the Power Op Amp insure accuracy. With this
closed loop operation, temperature induced impedance
variations of the motor winding are automatically com-
pensated.
Rev. C 3/01
4
TYPICAL PERFORMANCE CURVES
5
Rev. C 3/01
MECHANICAL SPECIFICATIONS
MSK145
POWER SIP PACKAGE
ALL DIMENSIONS ARE ±0.01 INCHES UNLESS OTHERWISE SPECIFIED ESD TRIANGLE INDICATES PIN 1
MSK146
POWER DIP PACKAGE
POWER Z-TAB PACKAGE
MSK147
6
Rev. C 3/01
MECHANICAL SPECIFICATIONS CONTINUED
ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE SPECIFIED
ORDERING INFORMATION
Part
Number
Screening Level
MSK 541
Industrial
Military - MIL-PRF-38534
DSCC - SMD
MSK 541 B
5962-8870101X
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.
Please visit our website for the most recent revision of this datasheet
7
Rev. C 3/01
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