ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
HIGH VOLTAGE
OPERATIONAL AMPLIFIER
0004
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 QUALIFIED
FEATURES:
Pin Similar Replacement for the LH0004
Wide Supply Voltage Range: ±10V to ±50V
Low Offset Current: 15nA
High Voltage Gain: 200KV/V
Internal Compensation
Output Overload Protection
Thermal Overload Protection
DESCRIPTION:
The MSK 0004 is a high voltage operational amplifier for use in high performance signal conditioning applications,
as well as resolver excitation designs. These devices offer maximum reliability by providing internal output overload
protection and thermal overload protection. Monolithic design and internal compensation make the MSK 0004 an
excellent replacement for many general purpose operational amplifiers and specifically the LH0004. The MSK 0004 is
internally compensated and can replace the LH0004 in most applications without any changes to existing circuitry.
The device is packaged in an hermetically sealed 10 pin metal can.
EQUIVALENT SCHEMATIC
TYPICAL
APPLICATIONS
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
Precision High Voltage Power Supply
High Voltage Regulators
Signal Conditioning
Resolver Excitation
Transducer Power Supply
1
2
3
4
5
1
NC
+Input
-VCC
-Input
NC
10
9
8
7
6
NC
+VCC
Output
NC
NC
Rev. - 8/02
ABSOLUTE MAXIMUM RATINGS
VCC
VIN
TC
Supply Voltage
±50V
Differential Input Voltage
±40V
Case Operating Temperature Range
MSK0004H/E
-55°C to +125°C
MSK0004
-40°C to +85°C
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TST
TLD
TC
Storage Temperature Range -65°C to +150°C
Lead Temperature Range
300°C
(10 Seconds)
Junction Temperature
175°C
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ELECTRICAL SPECIFICATIONS
MSK0004H/E
Group A
Test Conditions 1
Parameter
MSK0004
Units
Subgroup
Min.
Typ.
Max.
Min.
Typ.
Max.
Supply Voltage Range 2
-
±10
±40
±50
±10
±40
±45
V
Quiescent Current
1
-
±3.0
±4.5
-
±3.0
±5.0
mA
2,3
-
-
±4.5
-
-
-
mA
1
-
±1.0
±6.0
-
±1.0
±7.5
mV
2,3
-
-
±7.0
-
-
-
mV
-
-
±15
-
-
±15
-
µV/°C
STATIC
INPUT
Input Offset Voltage
AV=10
Input Offset Voltage Drift 2
Input Bias Current
2
Input Offset Current 2
Common Mode Rejection Ratio 2
Input Impedence 2
1
-
±12
±30
-
±12
±50
nA
2,3
-
-
±50
-
-
-
nA
VCM=0V
1
-
±15
±30
-
±15
±40
nA
VCM=±20VDC
-
74
100
-
74
100
-
dB
-
40
250
-
MΩ
VCM=0V
DC
-
40
250
f=1KHz
4
±35
±37
-
±35
±37
-
V
VOUT=±35VPK
-
-
23
-
-
23
-
KHz
OUTPUT
Output Voltage Swing
Power Bandwidth 2
Output Resistance 2
No Load
-
-
500
-
-
500
-
Ω
Capacitive Load 2
RL=1KΩ
-
-
50
-
-
50
-
pF
VOUT=±30VPK
4
2.5
5.0
-
2.5
5.0
-
V/µS
-
100K
200K
-
V/V
19
-
16
22
°C/W
TRANSFER CHARACTERISTICS
Slew Rate
Open Loop Voltage Gain 2
VOUT=±30VPK f=10KHz
4
100K
200K
Thermal Resistance
Junction to Case @ 125°C
-
-
16
NOTES:
1
2
3
4
5
6
Unless otherwise specified, VCC=±40VDC and VIN=0V.
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 requested.
Military grade devices ("H" suffix) shall be 100% tested to subgroups 1,2,3 and 4.
Subgroup 5 and 6 testing available upon request.
Subgroup 1,4 TC=+25°C
Subgroup 2,5 TC=+125°C
Subgroup 3,6 TA=-55°C
2
Rev. - 8/02
APPLICATION NOTES
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 deecoupling 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.
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:
Conditions:
VCC=±40VDC
VO=±20Vp Sine Wave, Freq.=1KHz
RL=1KΩ
For a worst case analysis we treat the ±20Vp sine wave
as an 8 VDC output voltage.
1.) Find driver power dissipation
PD=(VCC-VO) (VO/RL)
=(40V-20V) (20V/1KΩ)
=400mW
2.) For conservative design, set TJ =+125°C.
3.) For this example, worst case TA =+100°C.
4.) RθJC = 16°C/W.
5.) RθCS=0.15°C/W for most thermal greases.
6.) Rearrange governing equation to solve for RθSA:
RθSA= ((TJ - TA) / PD) - (RθJC) - (RθCS)
= (125°C - 100°C)/0.4W - 16°C/W - 0.15°C/W
=62.5 - 16.15
=46.4°C/W
The heat sink in this example must have a thermal
resistance of no more than 46.4°C/W to maintain a junction temperature of less than +125°C.
TYPICAL APPLICATION CIRCUIT
Governing Equation:
TJ = PD X (RθJC + RθCS + RθSA) + TA
Where
TJ
PD
RθJC
RθCS
RθSA
TC
TA
TS
=
=
=
=
=
=
=
=
Junction Temperature
Total Power Dissipation
Junction to Case Thermal Resistance
Case to Heat Sink Thermal Resistance
Heat Sink to Ambient Thermal Resistance
Case Temperature
Ambient Temperature
Sink Temperature
Example:
The example demonstrates a worst case analysis for
the op-amp 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.
REPLACING THE LH0004
The MSK 0004 is not an exact copy of the LM0004
but it is only slightly different. The MSK 0004 is internally compensated and is lower cost. Pins 1,5,6,7 and
10 are not connected internally in the MSK0004.
3
Rev. - 8/02
TYPICAL PERFORMANCE CURVES
4
Rev. - 8/02
MECHANICAL SPECIFICATIONS
MSK0004
ALL DIMENSIONS ARE ±0.010 INCHES UNLESS OTHERWISE LABELED.
MSK0004 H
ORDERING INFORMATION
SCREENING
BLANK= INDUSTRIAL; E=EXTENDED RELIABILITY
H= MIL-PRF-38534 CLASS H
GENERAL PART NUMBER
The above example is a Military grade hybrid.
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. - 8/02