Maxim Integrated MAX4081FAUA+T High-Side Current-Sense Amplifier

The MAX4081FAUA+T from Maxim Integrated is a high-precision, high-side current-sense amplifier designed to monitor current in battery management systems, power management, and overcurrent protection applications. This device is particularly well-suited for scenarios where accurate current measurement is critical to operational safety and efficiency.

This current-sense amplifier is capable of monitoring the voltage across shunt resistors over a wide range of common-mode voltages, from 4.5V up to 76V, making it highly versatile for various system voltages. Its high-voltage capability also allows for direct connection to high-side battery terminals in portable devices, automotive applications, and industrial systems without the need for additional level-shifting circuitry.

The MAX4081FAUA+T features a fixed gain of 20V/V, providing a precise amplification of the differential voltage across the external sense resistor. This fixed gain simplifies design considerations, as no external gain-setting components are required. The device offers a low input offset voltage, which enhances measurement accuracy, and it operates within a temperature range of -40°C to +125°C, ensuring reliability across various environmental conditions.

The amplifier is packaged in a compact 8-pin µMAX package, which is ideal for space-constrained applications. It also supports a wide supply voltage range, from 2.7V to 5.5V, providing flexibility in system power design. The MAX4081FAUA+T is offered in a tape and reel format, denoted by the '+T' suffix, which facilitates automated pick-and-place manufacturing processes.

With its high accuracy, wide input common-mode voltage range, and compact form factor, the MAX4081FAUA+T is an excellent choice for designers looking to implement current sensing in their systems with minimal hassle and maximum reliability. Whether used in consumer electronics, automotive applications, or industrial control systems, this high-side current-sense amplifier is engineered to deliver performance that designers can trust.

For detailed specifications, application notes, and design resources, visit Maxim Integrated's official website or consult the MAX4081FAUA+T datasheet.