ADVANCED DATA SHEET
42142
Radiation Tolerant Power Operational Amplifier
+V
S
50 F
+R
CL
3
4
2
8
1
42142
5
6
SIGNAL
GROUND
-R
CL
LOAD
50 F
-V
S
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:
RCL = (0.65/ISC - 0.01) Ω
where ISC is the short circuit current limit in amperes at TC = 25°C.
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 (50 µF) 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
MII [ Micropac Industries ]
