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The OPA549 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 OPA549 operates from either single or dual supplies for design flexibility. The input common-mode range extends below the negative supply.
The OPA549 is internally protected against over-temperature conditions and current overloads. In addition, the OPA549 provides an accurate, user-selected current limit. Unlike other designs which use a "power" resistor in series with the output current path, the OPA549 senses the load indirectly. This allows the current limit to be adjusted from 0A to 10A 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 device is in thermal shutdown, and it can be forced low to disable the output stage and effectively disconnect the load.
The OPA549 is available in an 11-lead power package. Its copper tab allows easy mounting to a heat sink for excellent thermal performance. Operation is specified over the extended industrial temperature range, –40°C to +85°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | High-Voltage, High-Current Operational Amplifier datasheet (Rev. E) | Oct 7, 2005 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 | |
| Application note | MTTF, Failrate, Reliability, and Life Testing | Oct 4, 2000 | ||
| Application note | DC MOTOR SPEED CONTROLLER: Control a DC Motor without Tachometer Feedback | Sep 27, 2000 | ||
| Application note | Power Amplifier Stress and Power Handling Limitations | Sep 27, 2000 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TO-OTHER (KVC) | 11 | Ultra Librarian |
| TO-220 (KV) | 11 | Ultra Librarian |
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