Texas Instruments

OPA3681U

OPA3681U Description

The OPA3681U is a high-performance, current feedback operational amplifier from Texas Instruments, part of the SpeedPlus™ series. This IC is designed for applications requiring high bandwidth and fast slew rates. It features a -3dB bandwidth of 280 MHz and a slew rate of 2100 V/µs, making it suitable for high-speed signal processing. The OPA3681U operates with a supply voltage range of 5 V to 12 V and draws a supply current of 18 mA. It has an input bias current of 30 µA and an input offset voltage of 1.3 mV. The amplifier can deliver an output current of 190 mA per channel. The OPA3681U is available in a surface-mount package, specifically a tube, and contains three circuits. Despite being obsolete, it remains a reliable choice for applications needing high-speed performance.

OPA3681U Features

• High-Speed Performance: With a -3dB bandwidth of 280 MHz and a slew rate of 2100 V/µs, the OPA3681U excels in high-speed signal processing applications.
• Wide Supply Voltage Range: Operates efficiently within a supply voltage range of 5 V to 12 V, offering flexibility in power supply design.
• Low Input Bias Current: Features an input bias current of 30 µA, minimizing the impact on sensitive input signals.
• Low Input Offset Voltage: An input offset voltage of 1.3 mV ensures high accuracy in signal amplification.
• High Output Current Capability: Capable of delivering 190 mA per channel, making it suitable for driving heavy loads.
• Surface-Mount Packaging: Available in a tube package, ideal for surface-mount assembly processes.
• Moisture Sensitivity Level: MSL 1 (Unlimited) ensures the device is robust against moisture, enhancing reliability in various environments.
• Compliance: REACH Unaffected and ECCN EAR99, ensuring compliance with international regulations.

OPA3681U Applications

The OPA3681U is ideal for applications requiring high-speed signal processing and amplification. Its high bandwidth and fast slew rate make it suitable for:

• High-Speed Signal Processing: Ideal for applications such as video signal processing, where high-frequency signals need to be accurately amplified and transmitted.
• Data Acquisition Systems: Useful in data acquisition systems that require fast response times and high accuracy.
• Communication Systems: Suitable for communication systems where high-speed signal integrity is crucial.
• Medical Equipment: Can be used in medical imaging and diagnostic equipment that require precise signal processing.
• Industrial Automation: Ideal for industrial applications where high-speed control and monitoring are necessary.

Conclusion of OPA3681U

The OPA3681U from Texas Instruments is a high-performance current feedback operational amplifier that offers exceptional speed and accuracy. Its wide supply voltage range, low input bias current, and low input offset voltage make it a versatile choice for a variety of high-speed applications. Despite being obsolete, the OPA3681U remains a reliable and robust solution for applications requiring high-speed signal processing and amplification. Its surface-mount packaging and compliance with international regulations further enhance its suitability for modern electronic designs.