MAX4173TESA+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4173TESA+T is a high-side current-sense amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +3V to +28V supply and features a voltage output proportional to the voltage drop across an external sense resistor. The device provides a gain of 50 V/V, with a common-mode input range of 0V to +28V independent of the supply voltage. It draws 420µA of supply current and offers ±0.5% full-scale accuracy. The component is housed in an 8-pin SO package and supports an operating temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High-side current monitoring capability with a 0V to +28V common-mode input range
• Integrated fixed gain version providing a voltage output without external gain-setting resistors
• Low power consumption suitable for battery-powered systems
• Compact surface-mount packaging

Instrumentation, Op Amps, Buffer Amps Applications

• Notebook Computers
• Portable/Battery-Powered Systems
• Smart Battery Packs/Chargers
• Cell Phones
• Power-Management Systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'ESA' corresponds to the 8-pin Small Outline (SO) package configuration rather than the SOT23 variant. Confirm that the '+T' designation indicates tape and reel packaging if required for automated assembly processes. Ensure compatibility with the specified operating temperature range and supply voltage requirements for the target application design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this part when a fixed gain of 50 V/V is required for high-side current sensing applications. It is appropriate for designs needing a wide common-mode input range extending down to 0V. Consider the 8-pin SO package constraints regarding board space compared to the available SOT23 options. Verify that the system supply voltage remains within the +3V to +28V operational limits.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the MAX4173 family of low-cost, precision current-sense amplifiers. The family includes variants with different fixed gains (+20V/V, +50V/V, and +100V/V) and packages (SOT23-6 and SO-8). The MAX4173 series is designed to simplify current monitoring in portable electronics by eliminating the need for external gain-setting resistors.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

MAX4173FESA+