Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/17/01
PRELIMANARY DATA SHEET
42143
RADIATION TOLERANT
POWER OPERATIONAL AMPLIFIER
Mii
HYBRID MICROELECTRONICS
PRODUCTS DIVISION
Features:
Designed for 100 krad(Si) Total Dose
Hermetically Sealed in Metal Flat Package
Performance over 55C to +125C
Wide Supply Voltage Range
2A Output Current
Short Circuit Protection
Applications:
Satellite/Space
systems
Military/High Reliability Systems
Programmable Power Supplies
Solenoid
Driver
Servo Motor Amplifier
Synchro Power Amplifier
DESCRIPTION
The 42143 Power Operational Amplifier designed for military and space applications where radiation tolerance is
required. Utilizing multi-chip hybrid construction, the 42143 Power Operational Amplifier combines 2A load current
capability with the convenience of a monolithic operational amplifier. Output current limiting is provided using
external resistors. The 42143 Power Operational Amplifier is supplied in an 8-pin metal flat package.
ABSOLUTE MAXIMUM RATINGS:
Supply Voltage (V
S
) .................................................................................................................. 22 V
Input Voltage
(1)
........................................................................................................................... 22 V
Differential Input Voltage
(2)
............................................................................................................. 0.7
Peak Output Current
(3)
................................................................................................................... 2 A
Storage Temperature Range ........................................................................................... -65C to +150C
Operating Junction Temperature ...................................................................................... -55C to +150C
Lead Solder Temperature for 10 seconds ......................................................................................... 300C
Power Dissipation
(4)
..................................................................................................................... 83 W
Thermal Resistance (Junction to Case),
JC
.................................................................................. 1.5 C/W
WEIGHT: ................................................................................................................. 15 grams (typical)
RECOMMENDED OPERATING CONDITIONS:
Parameter
Symbol
Min.
Max.
Units
Supply Voltage
V
S
8
20
VDC
Ambient Temperature
T
A
-55
125
C
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/17/01
PRELIMINARY DATA SHEET
42143
Radiation Tolerant Power Operational Amplifier
ELECTRICAL SPECIFICATIONS (Pre-Irradiation)
V
S
= 15 V, T
C
= -55C to +125C unless otherwise specified
Parameter
Symbol
Min.
Typ.*
Max.
Units
Test Conditions
Input Offset Voltage
V
OS
25
200
V
Input Offset Voltage Drift
5
V/C
Input Bias Current
I
B+,
I
B-
15
80
nA
Input Offset Current
I
OS
10
75
nA
DC Open Loop Gain
A
VOL
100
126
dB
R
L
> 2 k
, V
O
= 10V
Common-Mode Input Voltage
Range
V
CM
10.3
12.3
V
Common-Mode Rejection Ratio
CMRR
100
dB
V
CM
= 9 VDC
R
L
= 10 k
Gain Bandwidth Product
(5)
GBW
1
MHz
Phase Margin
(5)
M
45
deg.
R
L
= 10 k
(small signal)
Slew Rate
SR
2
V/
s
R
L
= 100
R
CL
= 0.4
Output Voltage Swing
V
O
12
10
V
R
L
= 10 k
R
L
= 5
Quiescent Current
I
Q
4
7
mA
R
L
=
Thermal Resistance
JA
30
C/W
* All typical values are at T
C
= 25C
Notes:
1. For V
S
less than
22 V, the input voltage is not to exceed V
S
.
2. Input current must not exceed 25 mA
3. It is recommended that external current limiting resistors (
R
CL
0.4 ) be used to ensure that 2.0 A is
not exceeded. See Figures 1, 2 and 4 for R
CL
application information.
4. Case Temperature T
C
= 25C (see Figure 3).
5. Guaranteed by design.
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/17/01
PRELIMINARY DATA SHEET
42143
Radiation Tolerant Power Operational Amplifier
Figure 1. Typical Short-Circuit Output Current Figure 2. Short-Circuit Output Current vs. Case
vs. Current Limiting Resistors (
R
CL
) Temperature (typical data).
Figure 3. Maximum Average Power Dissipation
vs. Case Temperature
0
20
40
60
80
100
-55 -25
5
35
65
95 125
Temperature (C)
I
n
t
e
r
nal P
o
wer
Dis
s
i
pat
io
n (
W
)
0.0
0.5
1.0
1.5
2.0
-55
-25
5
35
65
95
125
Temperature (C)
S
hor
t-
C
i
r
c
ui
t O
u
t
p
u
t
C
u
rre
n
t
(
A
)
R
CL
= .4 ohm
R
CL
= .65 ohm
0.0
0.5
1.0
1.5
2.0
0.25
0.75 1.25
1.75
2.25 2.75
3.25
Resistance (ohm)
S
hor
t
-
C
i
r
c
uit
O
u
t
p
u
t
C
u
rre
n
t
(
A
)
T
C
= 25C
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/17/01
PRELIMINARY DATA SHEET 42143
Radiation Tolerant Power Operational Amplifier
42143
SIGNAL
GROUND
LOAD
+VS
2
3
8
6
4
5
1
CL
+R
10 F
S
-V
10 F
-RCL
Figure 4. Application Information
Controlling the short circuit current to the minimum necessary for a given application maximizes
device protection and reliability.
Approximate values for the current limiting resistors can be determined from the equation:
R
CL
= ((0.65/I
SC
) - 0.01)
where I
SC
is the short circuit current limit in amperes at T
C
= 25C.
Current limits for positive and negative load currents can be set independently.
Current limiting resistors carry the full output current, therefore the short circuit current limit
should be used in determining resistor wattage. Lead lengths of the limiting resistors should be
minimized and highly inductive resistor types should be avoided.
Large bypass capacitors are recommended across the power supply terminals if the application
requires large output current transients. Care should be taken to keep the power supply ground
currents from flowing through the signal ground path.
Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.
Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.
MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION
905 E. Walnut St., Garland, TX 75040 (972) 272-3571 Fax (972) 494-2281
www.micropac.com
E-MAIL:
hybridsales@micropac.com
05/17/01
PRELIMINARY DATA SHEET 42143
Radiation Tolerant Power Operational Amplifier
CASE OUTLINE
NOTE: Dimensions in inches.
ELECTRICAL CONNECTIONS
Pin 1 ................................................+V
Pin 2 ................................................ -IN
Pin 4 ................................................ -V
Pin 3 ................................................ +IN
Pin 5 ................................................ CL-
Pin 8 ................................................ CL+
Pin 7 ................................................ NC
Pin 6 ............................................... OUT
s
s
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