FEATURES

WIDE SUPPLY RANGE

Single Supply: +8V to +60V

Dual Supply: ±4V to ±30V

HIGH OUTPUT CURRENT:

500mA Continuous

WIDE OUTPUT VOLTAGE SWING

FULLY PROTECTED:

Thermal Shutdown

Adjustable Current Limit

OUTPUT DISABLE CONTROL

THERMAL SHUTDOWN INDICATOR

HIGH SLEW RATE: 6V/μs

LOW QUIESCENT CURRENT

PACKAGES:

7-Lead TO-220, Zip and Straight Leads

7-Lead DDPAK Surface-Mount

APPLICATIONS

VALVE, ACTUATOR DRIVERS

SYNCHRO, SERVO DRIVERS

POWER SUPPLIES

TEST EQUIPMENT

TRANSDUCER EXCITATION

AUDIO AMPLIFIERS

DESCRIPTION

The OPA547 is a low-cost, high-voltage/high-current operational

amplifier 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 OPA547 operates from either single or dual supplies for

design flexibility. In single-supply operation, the input common-

mode range extends below ground.

The OPA547 is internally protected against over-temperature

conditions and current overloads. In addition, the OPA547

was designed to provide an accurate, user-selected current

limit. Unlike other designs which use a “power” resistor in

series with the output current path, the OPA547 senses the

load indirectly. This allows the current limit to be adjusted

from 0mA to 750mA with a 0 to 150μA control signal. This is

easily done with a resistor/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 OPA547 is in thermal shutdown.

The OPA547 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. It is specified for

operation over the extended industrial temperature range,

–40°C to +85°C.