Maxim Integrated MAX4080SAUA-T High-Side Current-Sense Amplifier

The MAX4080SAUA-T from Maxim Integrated is a highly precise, high-side current-sense amplifier that offers a simple and efficient solution for current measurement in a wide range of applications. Designed to monitor current from 0V to 76V, it is particularly suitable for portable PCs, cell phones, and other systems where battery/DC current monitoring is crucial.

This current-sense amplifier is capable of sensing the voltage across shunt resistors at common-mode voltages from 0V up to 76V, independent of the supply voltage. It features a wide input common-mode voltage range, low offset voltage, and high accuracy which make it ideal for precision current measurement in both low and high-side sensing applications.

The MAX4080SAUA-T operates from a single 3V to 76V supply and draws a minimal supply current of only 100μA, which is particularly beneficial for power-sensitive applications. Additionally, the device features a gain of 20V/V, which allows for the use of smaller sense resistors with lower power loss, while still providing sufficient output voltage swing for the analog-to-digital conversion process.

Encased in a compact 8-pin μMAX package, the MAX4080SAUA-T is designed to save space on the PCB, which is a critical factor in densely packed electronic systems. The small footprint also allows for closer placement to the sense resistor, reducing noise pickup and increasing the accuracy of current measurements.

Key features of the MAX4080SAUA-T include:

• High-side current sensing
• Input common-mode voltage range: 0V to 76V
• Low offset voltage
• High accuracy
• Low supply current: 100μA
• Wide supply voltage range: 3V to 76V
• Fixed gain of 20V/V
• Compact 8-pin μMAX package

Whether it's for battery management, overcurrent protection, or any other system requiring precise current monitoring, the MAX4080SAUA-T stands out as a robust, reliable, and precise solution for high-side current-sensing applications.