Maxim Integrated MAX4081SAUA+ High-Side Current-Sense Amplifier

The MAX4081SAUA+ is a precision, high-side current-sense amplifier from Maxim Integrated, designed to monitor the current flow in power management systems. This device is housed in a compact 8-pin µMAX package, making it ideal for space-constrained applications where accurate current measurement is crucial.

Key Features

• Wide Input Voltage Range: The MAX4081SAUA+ can operate over a wide supply voltage range of 4.5V to 76V, accommodating various applications from automotive to industrial systems.
• High Accuracy: It offers a low input offset voltage, enabling precise current measurement without significant error contribution from the amplifier itself.
• High-Side Monitoring: By measuring the voltage drop across a shunt resistor on the high side of the load, the MAX4081 provides a safer way to detect current without interfering with the ground path.
• Gain Options: The device has a fixed gain of 20V/V, which simplifies the design by eliminating the need for external gain-setting resistors.
• Low Quiescent Current: It features a low quiescent current, making it suitable for power-sensitive applications.
• Wide Temperature Range: The MAX4081SAUA+ is capable of operating over a broad temperature range of -40°C to +125°C, ensuring reliability in harsh environments.

Applications

The MAX4081SAUA+ is versatile and can be used in a variety of applications, including:

• Battery management systems
• Power management in portable devices
• Automotive systems
• Industrial control systems
• Telecommunication equipment

Easy Integration

With its small footprint and no need for external calibration components, the MAX4081SAUA+ is easy to integrate into existing and new designs. Its robustness and precision make it a go-to choice for engineers looking to accurately monitor current in their systems.

Overall, the Maxim Integrated MAX4081SAUA+ offers a reliable and efficient solution for high-side current sensing applications, where space is at a premium and precision is non-negotiable.