TYPICAL APPLICATIONS
4707 Dey Road Liverpool, N.Y. 13088
(315) 701-6751
MIL-PRF-38534 QUALIFIED
0004
ISO-9001 CERTIFIED BY DSCC
M.S.KENNEDY CORP.
FEATURES:
Precision High Voltage Power Supply
High Voltage Regulators
Signal Conditioning
Resolver Excitation
Transducer Power Supply
HIGH VOLTAGE
OPERATIONAL AMPLIFIER
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
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.
PIN-OUT INFORMATION
NC
+Input
-V
CC
-Input
NC
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
1
2
3
4
5
Rev. - 8/02
1
NC
+V
CC
Output
NC
NC
10
9
8
7
6
STATIC
Supply Voltage Range
Quiescent Current
INPUT
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Common Mode Rejection Ratio
Input Impedence
OUTPUT
Output Voltage Swing
Power Bandwidth
Output Resistance
Capacitive Load
TRANSFER CHARACTERISTICS
Slew Rate
Open Loop Voltage Gain
Thermal Resistance
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Junction Temperature
ABSOLUTE MAXIMUM RATINGS
50V
40V
-55C to +125C
-40C to +85C
Supply Voltage
Differential Input Voltage
Case Operating Temperature Range
MSK0004H/E
MSK0004
-65C to +150C
300C
175C
1
2
3
4
5
6
T
ST
T
LD
T
C
V
CC
V
IN
T
C
Unless otherwise specified, V
CC
=40V
DC
and V
IN
=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 T
C
=+25C
Subgroup 2,5 T
C
=+125C
Subgroup 3,6 T
A
=-55C
NOTES:
Group A
Subgroup
-
1
2,3
1
2,3
-
1
2,3
1
-
-
4
-
-
-
4
4
-
AV=10
V
CM
=0V
V
CM
=0V
V
CM
=20V
DC
DC
f=1KHz
V
OUT
=35V
PK
No Load
R
L
=1K
V
OUT
=30V
PK
V
OUT
=30V
PK
f=10KHz
Junction to Case @ 125C
Typ.
40
3.0
-
1.0
-
15
12
-
15
100
250
37
23
500
50
5.0
200K
16
Test Conditions
Max.
50
4.5
4.5
6.0
7.0
-
30
50
30
-
-
-
-
-
-
-
-
19
Min.
10
-
-
-
-
-
-
-
-
74
40
35
-
-
-
2.5
100K
-
Min.
10
-
-
-
-
-
-
-
-
74
40
35
-
-
-
2.5
100K
-
Max.
45
5.0
-
7.5
-
-
50
-
40
-
-
-
-
-
-
-
-
22
Typ.
40
3.0
-
1.0
-
15
12
-
15
100
250
37
23
500
50
5.0
200K
16
V
mA
mA
mV
mV
V/C
nA
nA
nA
dB
M
V
KHz
pF
V/S
V/V
C/W
MSK0004H/E
MSK0004
Parameter
ELECTRICAL SPECIFICATIONS
2
Rev. - 8/02
Units
2
2
2
2
2
2
2
2
2
2
1
APPLICATION NOTES
3
Rev. - 8/02
HEAT SINKING
To determine if a heat sink is necessary for your appli-
cation and if so, what type, refer to the thermal model
and governing equation below.
Thermal Model:
Governing Equation:
T
J
=
P
D
X (R
JC
+ R
CS
+ R
SA
) + T
A
Where
T
J
= Junction Temperature
P
D
= Total Power Dissipation
R
JC
= Junction to Case Thermal Resistance
R
CS
= Case to Heat Sink Thermal Resistance
R
SA
= Heat Sink to Ambient Thermal Resistance
T
C
= Case Temperature
T
A
= Ambient Temperature
T
S
= 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 con-
dition, maximum power transfer occurs and the output
is under maximum stress.
Conditions:
V
CC
=40VDC
V
O
=20Vp Sine Wave, Freq.=1KHz
R
L
=1K
For a worst case analysis we treat the 20Vp sine wave
as an 8 VDC output voltage.
1.) Find driver power dissipation
P
D
=(V
CC
-V
O
) (V
O
/R
L
)
=(40V-20V) (20V/1K
)
=400mW
2.) For conservative design, set T
J
=+125C.
3.) For this example, worst case T
A
=+100C.
4.) R
JC
= 16C/W.
5.) R
CS
=0.15C/W for most thermal greases.
6.) Rearrange governing equation to solve for R
SA
:
R
SA
= ((T
J
-
T
A
) / P
D)
- (R
JC
) - (R
CS
)
= (125C - 100C)/0.4W - 16C/W - 0.15C/W
=62.5 - 16.15
=46.4C/W
The heat sink in this example must have a thermal
resistance of no more than 46.4C/W to maintain a junc-
tion temperature of less than +125C.
TYPICAL APPLICATION CIRCUIT
REPLACING THE LH0004
The MSK 0004 is not an exact copy of the LM0004
but it is only slightly different. The MSK 0004 is inter-
nally compensated and is lower cost. Pins 1,5,6,7 and
10 are not connected internally in the MSK0004.
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 mi-
crofarad tantalum capacitor from each power supply pin
to ground.
TYPICAL PERFORMANCE CURVES
Rev. - 8/02
4
MECHANICAL SPECIFICATIONS
ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED.
Rev. - 8/02
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.
M.S. Kennedy Corp.
4707 Dey Road, Liverpool, New York 13088
Phone (315) 701-6751
FAX (315) 701-6752
www.mskennedy.com
MSK0004
ORDERING INFORMATION
5
MSK0004 H
SCREENING
BLANK= INDUSTRIAL; E=EXTENDED RELIABILITY
H= MIL-PRF-38534 CLASS H
GENERAL PART NUMBER
The above example is a Military grade hybrid.
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