ISO 9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
032
FET INPUT
DIFFERENTIAL OP-AMP
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 CERTIFIED
FEATURES:
Fast Slew Rate
Fast Settling Time
FET Input
Wide Bandwidth
Electrically Isolated
LH0032 Pin Compatible Upgrade
DESCRIPTION:
The MSK 032 is a high speed, FET input, differential operational amplifier. Intended to replace the popular LH0032,
the MSK 032 offers improved performance, much greater consistency from lot to lot, and improved stability over its
operating temperature range.
The MSK 032's wide bandwidth, accuracy and output drive capability make it a superior choice for applications such
as video amplifiers, buffer amplifiers, comparator circuits and other high frequency signal transfer circuits. As with all
MSK products, the MSK 032 is conservatively specified and is available in military and industrial grades.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Video Amplifiers
Buffer Amplifiers
Comparator Circuits
PIN-OUT INFORMATION
1
2
3
4
5
6
NC
Output Compensation
Compensation/Balance
Compensation/Balance
Inverting Input
Non-Inverting Input
1
7
8
9
10
11
12
NC
Case Connection
NC
Negative Power Supply
Output
Positive Power Supply
Rev. B 5/02
ABSOLUTE MAXIMUM RATINGS
±VCC
IOUT
VIN
TC
±18V
Supply Voltage
±40mA
Output Current
±30V
Differential Input Voltage
Case Operating Temperature Range
-55°C to +125°C
(MSK 032B/E)
-40°C to +85°C
(MSK 032)
187°C/W
Thermal Resistance
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RTH
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TST
TLD
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Junction Temperature
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TJ
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-65°C to +150°C
300°C
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175°C
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(Output Switches) (Junction to Case)
ELECTRICAL SPECIFICATIONS
Parameter
±Vcc=±15VDC Unless Otherwise Specified
MSK 032B/E
Group A
Test Conditions
MSK 032
Subgroup
Min.
Typ.
Max.
Min.
Typ.
Max.
Units
-
±10
±15
±18
±10
±15
±18
V
1
-
±15
±20
-
±15
±22
mA
2,3
-
±18
±25
-
-
-
mA
1
-
±0.5
±5
-
±1
±7
mV
2,3
-
±10
±25
-
-
-
µV/°C
STATIC
Supply Voltage Range 2 7
VIN=0V
Quiescent Current
INPUT
Bal.Pins=NC VIN=0V AV=-10V/V
Input Offset Voltage
Input Offset Voltage Drift
Bal.Pins=NC
Input Offset Adjust
RPOT=10KΩ To +VCC
Input Bias Current
Input Offset Current
Common Mode Rejection Ratio 2
Input Noise Voltage
Equivalent Input Noise
1
Adjust to Zero
2,3
Adjust to Zero
mV
Adjust to Zero
-
-
-
mV
VCM=0V
1
-
±50
±250
-
±75
±300
pA
Either Input
2,3
-
±0.2
±10
-
-
-
nA
VCM=0V
1
-
10
100
-
20
150
pA
-
2,3
-
0.1
5
-
F=DC
-
-
10 12
-
-
∆ VCC=±5V
-
60
70
-
-
70
80
F=10Hz To 1KHz
-
-
F=1KHz
-
-
F≤5MHZ RL=510Ω
4
Input Impedance 2
Power Supply Rejection Ratio 2
V IN=0V
F=DC
VCM=±10V
-
nA
10 12
-
Ω
55
70
-
dB
-
65
80
-
dB
1.5
-
-
1.5
-
µVrms
40
-
-
40
-
nV√Hz
±10
±12
-
±10
±12
-
V
OUTPUT
Output Voltage Swing
Output Current
Settling Time to 1% 1
2
Settling Time to 0.1% 2
Full Power Bandwidth
Bandwidth (Small Signal) 2
RL=510Ω
4
±20
±30
-
±20
±30
-
mA
RL=1KΩ 10V step
4
-
50
60
-
55
65
nS
RL=1KΩ 10V step
4
-
60
90
-
70
100
nS
RL=510Ω Vo=±10V
4
8
9
-
7
8
-
MHz
RL=510Ω
4
80
90
-
75
80
-
MHz
VOUT=±10V RL=510Ω
4
500
600
-
475
550
-
V/µS
VOUT=±10V RL=1KΩ
4
80
90
-
75
85
-
dB
TRANSFER CHARACTERISTICS
Slew Rate Limit
Open Loop Voltage Gain 2
NOTES:
1
2
3
4
5
6
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 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.
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
7 Electrical specifications are derated for power supply voltages other than ±15VDC.
2
Rev. B 5/02
APPLICATION NOTES
RθSA= ((TJ - TA)/PD ) - (RθJC) - (RθCS).
= ((125°C-100°C) /0.13W) - 187° C/W - 0.15°C/W
= 192.3 - 187.15
= 5.2°C/W
The heat sink in this example must have a thermal resistance
of no more than 5.2°C/W to maintain a junction temperature
of no more than+125°C.
HEAT SINKING
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.
Thermal Model:
SLEW RATE VS. SLEW RATE LIMIT
SLEW RATE
SR = 2πVpF: Slew rate is based upon the sinusoidal linear
response of the amplifier and is calculated from the full power
bandwidth frequency.
SLEW RATE LIMIT
dv/dt: The slew rate limit is based upon the amplifier's response to a step input and is measured between 10% and 90%.
MSK measures TR orTF, whichever is greater at±10VouT,
RL=510Ω
SRL= VO-20%
TR or TF
COMPENSATION
The MSK 032, can be frequency compensated by connecting
an R-C snubber circuit from pin 3 to pin 4 as shown below.
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
The recommended capacitor value is 0.01µF and the resistor value can range from 2Ω to 500Ω. The effects of this R-C
snubber can be seen on the typical performance curve labeled
Slew Rate VS. Compensation Resistance. The graph clearly illustrates the decrease in transition time as snubber resistance increases. This occurs because the high frequency components
of the input square wave are above the corner frequency of the
R-C snubber and are applied common mode to the bases of the
second differential pair, (pins 3 and 4). There is no differential
gain for these higher frequencies since the input signal is applied common mode. Without the high frequency components
appearing at the output, the slew rate and bandwidth of the opamp are limited. However, at the cost of speed and bandwidth
the user gains circuit stability. A good design rule to follow is: as
closed loop gain decreases, circuit stability decreases, therefore
snubber resistance should decrease to maintain stability and avoid
oscillation. The MSK 032 can also be compensated using the
standard LH0032 techniques.
Example:
This example demonstrates a worst case analysis for the opamp output stage. This occurs when the output voltage is 1/2
the power supply voltage. Under this condition, maximum power
transfer occurs and the output is under maximum stress.
Conditions:
Vcc=±16VDC
Vo=±8Vp Sine Wave, Freq.= 1KHz
RL=510Ω
For a worst case analysis we treat the +8Vp sine wave as an 8
VDC output voltage.
1.) Find driver power dissipation
PD = (Vcc-Vo) (Vo/RL)
= (16V - 8V) (8V/510Ω)
= 125.5mW
2.) For conservative design, set TJ=+125°C
3.) For this example, worst caseTA=+100°C
4.) RθJC= 187°C/W from MSK 032B Data Sheet
5.) RθCS= 0.15°C/W for most thermal greases
6.) Rearrange governing equation to solve for RθSA
POWER SUPPLY BYPASSING
Both the negative and 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.
3
Rev. B 5/02
TYPICAL PERFORMANCE CURVES
4
Rev. B 5/02
MECHANICAL SPECIFICATIONS
ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED
ORDERING INFORMATION
Part
Number
Screening Level
MSK032
Industrial
MSK032E
Extended Reliability
MSK032B
Mil-PRF-38534 Class H
MSK032S
Mil-PRF-38534 Class K
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.
5
Rev. B 5/02