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OPA551 High-Voltage (60V), High-Current (200mA) Op-Amp. Ideal for audio, telephony, and motor control. Powerful performance in a compact 8-pin package.
Description
The OPA551 is a high-performance operational amplifier designed to handle both high voltage and high current with ease. Unlike standard op-amps, the OPA551 can operate on power supplies up to ±30V (60V total) and deliver a continuous output current of 200mA. This makes it a "workhorse" for demanding circuits that need to drive heavy loads like motors, speakers, or long cables. It is "unity-gain stable," meaning it works reliably even in the simplest buffer configurations. With built-in protection against overheating and current overloads, it is a durable choice for both industrial and DIY electronic projects.
Features
High Voltage Range: Operates from ±4V to ±30V (8V to 60V total).
Strong Output Current: Delivers up to 200mA continuously to drive heavy loads.
Built-in Protection: Features internal thermal shutdown and current limiting to prevent damage.
Thermal Indicator Pin: Includes a "Flag" pin that alerts your system if the chip gets too hot.
Fast & Responsive: High slew rate of 15V/µs for clean signal reproduction.
Low Noise: Provides clear signal processing with very low background interference.
Wide Output Swing: The output can move very close to the power supply rails (within 2V).
Applications
Audio Amplifiers: Driving speakers or high-impedance headphones.
Industrial Control: Powering servo motors, valves, and actuators.
Telephony: Use in subscriber line interface circuits and phone lines.
Test Equipment: Ideal for power supply designs and signal generators.
Transducer Excitation: Providing power to sensors that require high voltage or current.
Parameters
Supply Voltage: ±4V to ±30V (Single supply 8V to 60V)
Continuous Output Current: 200 mA
Bandwidth: 3 MHz
Slew Rate: 15 V/µs
Input Bias Current: 20 pA (Typical)
Input Offset Voltage: 1 mV (Typical)
Operating Temperature: -40°C to +125°C
Package Options: 8-Pin PDIP (Through-hole) or SOIC-8 (Surface Mount)
External Links
Google Sites
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