OPA549T | Texas Instruments

Operational Amplifier, OPA549T, Texas Instruments

The OPA549T is a low-cost, high-voltage, high-current operational amplifier ideal for driving a wide variety of loads. This laser-trimmed monolithic integrated circuit provides excellent low-level signal accuracy and high output voltage and current. The OPA549T operates from either single or dual supplies for design flexibility. The input common-mode range extends below the negative supply. The OPA549T is internally protected against over-temperature conditions and current overloads. It provides an accurate, user-selected current limit.

Unlike other designs that use a power resistor in series with the output current path, the OPA549T senses the load indirectly. This allows the current limit to be adjusted from 0 A to 10 A with a resistor/potentiometer, or controlled digitally with a voltage-out or current-out Digital-to-Analog Converter (DAC). The Enable/Status (E/S) pin provides two functions. It can be monitored to determine if the OPA549T is in thermal shutdown, and it can be forced low to disable the output stage and effectively disconnect the load.

Features

• Wide Output Voltage Swing
• Output disable control
• Thermal shutdown indicator

Applications

• Valve, Actuator Drivers
• Synchro, Servo Drivers
• Power Supplies
• Test Equipment
• Transducer Excitation
• Audio Power Amplifiers