Operational Amplifiers – Op Amps Hi-Vltg Hi-Current E xc Output Swing

OPA547FKTWT – High-Voltage 750mA Operational Amplifier – Texas Instruments

This OPA547FKTWT operational amplifier from Texas Instruments delivers robust performance for power-critical applications. Engineered for exceptional output swing and high-current drive, it simplifies designs requiring precision under demanding voltage conditions. PCX ensures authentic Texas Instruments components with same-day shipping and dedicated technical support.

Key Features

• High Output Current: 750mA continuous drive capability
• Wide Voltage Range: Operates from 8V to 60V supply
• Thermal Protection: Thermal shutdown with status flag
• Slew Rate: 6V/µs for fast signal response
• Input Offset Voltage: 1mV (typical) for precision
• Operating Temperature: Industrial-grade -40°C to 85°C

Technical Specifications

This single-circuit operational amplifier features a TO-263-7 (DDPAK-7) surface-mount package with exposed thermal pad for efficient heat dissipation. With 1MHz gain bandwidth and 100nA input bias current, it maintains stability across industrial environments. The device supports rail-to-rail output swing and includes current limit adjustment pins.

Typical Applications

• Motor control and driver circuits
• Test equipment and programmable power supplies
• Industrial automation systems
• Audio amplification stages
• Medical instrumentation interfaces

About Texas Instruments

Texas Instruments (TI) is a global semiconductor leader with over 90 years of innovation in analog and embedded processing technologies. Their operational amplifiers set industry standards for precision, reliability, and power efficiency across automotive, industrial, and consumer markets.

TI’s rigorous quality control and continuous R&D investment ensure components meet stringent performance requirements. As a certified TI supplier, PCX guarantees genuine devices with full traceability and compliance documentation.

About Operational Amplifiers

Operational amplifiers (op amps) are fundamental building blocks in electronic signal conditioning. They amplify voltage differences between inputs while rejecting common-mode noise, enabling precise control in feedback systems. High-current op amps like the OPA547 series eliminate external buffer stages, reducing component count and board space.

Modern op amps optimize parameters like slew rate and bandwidth for specific applications. This TI device combines high-voltage tolerance with robust current sourcing – critical for driving motors, transducers, and other inductive loads where conventional amplifiers would require external power transistors.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® packaging for automated assembly. Specify your preferred format at checkout.

Frequently Asked Questions

Question: What heatsinking is required for full 750mA output?

Answer: The exposed DDPAK-7 tab must be soldered to a PCB copper plane (≥4cm²). Thermal shutdown activates at 160°C if inadequate heatsinking occurs.

Question: Does this support single-supply operation?

Answer: Yes, it operates from single (+8V to +60V) or dual (±4V to ±30V) supplies with rail-to-rail output capability.

Question: How does the current limiting function work?

Answer: Connect a resistor between I_LIM pin and V– to set current limits from 65mA to 750mA. Open-circuit disables protection.

Question: Is this suitable for audio applications?

Answer: Yes, its low distortion (0.006% THD+N) and high slew rate make it ideal for headphone drivers and speaker preamps.

Question: What’s the difference between OPA547 and OPA548?

Answer: OPA548 offers higher output current (1.5A) but narrower voltage range (8-30V). OPA547 provides superior high-voltage tolerance.

Question: Can I parallel multiple amplifiers for higher current?

Answer: Not recommended. Use dedicated high-current drivers instead to avoid thermal imbalance and oscillation risks.

Note: Product images are representational. Refer to datasheet for exact dimensions and schematics.
Download Full Datasheet

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