Maxim Integrated MAX4080TAUA-T High-Side Current-Sense Amplifier

The MAX4080TAUA-T from Maxim Integrated is a high-side current-sense amplifier that offers a precise, low-cost method for measuring current in high-voltage systems. Designed to operate over a wide supply voltage range, this device is suitable for a multitude of applications, including automotive, power management, and industrial systems where monitoring current is essential for performance and reliability.

This current-sense amplifier is capable of sensing the voltage across shunt resistors over a wide range of common-mode voltages from 4.5V up to 76V, even under high-voltage conditions. The MAX4080TAUA-T provides a gain of 20V/V, which translates the voltage across the shunt resistor into an output voltage proportional to the current flowing through the shunt. This feature allows for easy readout using analog-to-digital converters (ADCs) or direct connection to microcontrollers for further processing.

The device is offered in a compact 8-pin µMAX package, making it an excellent choice for space-constrained applications. Its small footprint does not compromise its performance, as it boasts a low input offset voltage, which minimizes error in current measurement, and a wide bandwidth of 500kHz, allowing it to respond rapidly to changes in load current.

One of the key advantages of the MAX4080TAUA-T is its ability to operate under high common-mode voltages without the need for external components, such as level shifters or isolators. This simplifies design and reduces the bill of materials. Furthermore, the integrated precision resistors ensure stable gain accuracy over the entire temperature range, enhancing the reliability of the system.

For safety-critical applications, the MAX4080TAUA-T includes features such as overtemperature protection and output short-circuit protection, ensuring long-term stability and robustness of the end application.

To facilitate easy integration into your designs, Maxim Integrated provides comprehensive technical documents, including datasheets, application notes, and design resources. With its high accuracy, wide operating range, and robust protection features, the MAX4080TAUA-T is an ideal solution for high-side current measurement in a wide array of applications.