Maxim Integrated MAX4372HESA+T High-Side Current-Sense Amplifier

The MAX4372HESA+T is a precision, high-side current-sense amplifier designed by Maxim Integrated, a leader in analog and mixed-signal products. This device offers a compact and efficient solution for current monitoring in a wide range of applications, including battery management, power supply control, and load detection.

Featuring a unique unidirectional high-side current sense, the MAX4372HESA+T is capable of measuring the current flowing through a shunt resistor placed in the supply line to any load. This high-side sensing allows the device to operate at common-mode voltages from +2.7V to +28V, independent of the supply voltage. This makes it particularly useful for systems where the ground plane cannot be disturbed, and it protects the system from ground loops and common-mode noise.

The MAX4372HESA+T offers a fixed gain of 20V/V, which simplifies the design by eliminating the need for external gain-setting resistors. This feature, combined with a low input offset voltage of 250µV (max) and a wide bandwidth of 500kHz, ensures high accuracy in current measurement across a broad range of operating conditions.

With its tiny 8-pin SOIC package, the MAX4372HESA+T is ideal for space-constrained applications. Its low quiescent current of just 40µA (typ) also makes it suitable for portable and battery-powered systems where power efficiency is crucial. Furthermore, the device includes a filter pin for added flexibility, allowing designers to add an external capacitor to filter out high-frequency noise and reduce the impact of transient signals.

Overall, the MAX4372HESA+T from Maxim Integrated is a robust and reliable choice for designers who require accurate current monitoring without the complexity of external calibration or additional components. Its ease of use, combined with high accuracy and a small footprint, makes it an excellent choice for a wide array of applications.

For detailed specifications and application notes, designers are encouraged to consult the datasheet and support documentation provided by Maxim Integrated.