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 150 µA 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.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | High-Voltage, High-Current Operational Amplifier datasheet (Rev. F) | Jul 21, 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 |
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The OPA547EVM is a platform for evaluating the OPA547 in a variety of circuit configurations. Circuit configuations include inverting/non-inverting gain, single/dual power supply, internal/external load and external reference. Access is provided to the Enable/Shutdown pin and LED's provide visual (...)
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TO-263 (KTW) | 7 | Ultra Librarian |
| TO-220 (KVT) | 7 | Ultra Librarian |
| TO-220 (KC) | 7 | Ultra Librarian |
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