The OPA548 device is a low-cost, high-voltage and
high-current operational amplifier thats ideal for driving a wide variety of loads. A
laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and
high-output voltage and current.
The OPA548 device operates from either single or dual supplies for design flexibility.
In single-supply operation, the input common-mode range extends below ground.
The OPA548 device is internally protected against over-temperature conditions and
current overloads. In addition, the OPA548 device was designed to provide an accurate,
user-selected current limit. Unlike other designs, which use a resistor in series with the output current path, the OPA548 device
senses the load indirectly. This allows the current limit to be adjusted from 0 A to 5 A with a
resistor and potentiometer or controlled digitally with a voltage-out or current-out DAC.
The Enable/Status (E/S) pin provides two functions. An input on the pin not only
disables the output stage to effectively disconnect the load, but also reduces the quiescent
current to conserve power. The E/S pin output can be monitored to determine if the OPA548 is in
The OPA548 device is available in an industry-standard 7-lead staggered and straight
lead TO-220 package, and a 7-lead DDPAK surface-mount plastic power package. The copper tab allows
easy mounting to a heat sink or circuit board for excellent thermal performance. The device is
specified for operation over the extended industrial temperature range, –40°C to 85°C. A SPICE
macromodel is available for design analysis.
View datasheet View product folder