OPA547

具有关断功能的高电压、高电流运放

The 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.

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WIDE SUPPLY RANGE Single Supply: +8V to +60V Dual Supply: ±4V to ±30V

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HIGH OUTPUT CURRENT: 500mA Continuous

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WIDE OUTPUT VOLTAGE SWING

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FULLY PROTECTED: Thermal Shutdown Adjustable Current Limit

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OUTPUT DISABLE CONTROL

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THERMAL SHUTDOWN INDICATOR

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HIGH SLEW RATE: 6V/µs

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LOW QUIESCENT CURRENT

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PACKAGES: 7-Lead TO-220, Zip and Straight Leads 7-Lead DDPAK Surface-Mount

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APPLICA ONS

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VALVE, ACTUATOR DRIVERS

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SYNCHRO, SERVO DRIVERS

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POWER SUPPLIES

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TEST EQUIPMENT

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TRANSDUCER EXCITATION

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AUDIO AMPLIFIERS