MAX4173TESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4173TESA+ 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 with a gain of 20 V/V. The device supports an input common-mode range of 0V to +28V, independent of the supply voltage. Key electrical characteristics include a typical supply current of 420µA, a bandwidth of 1.7MHz, and a full-scale accuracy of ±0.5%. It is housed in an 8-pin SO package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Provides a fixed voltage output proportional to the sense resistor voltage drop without requiring external gain-setting resistors.
• Supports high-side current monitoring with a common-mode input range extending down to 0V, enabling operation during deep battery discharge.
• Features a wide 1.7MHz bandwidth suitable for integration into battery charger control loops.

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 'TESA' against official documentation to confirm the package type (SO) and temperature range (-40°C to +85°C). Ensure compatibility with system requirements regarding the 20 V/V gain setting. Confirm lead-free/RoHS compliance status as indicated by the '+' designation in ordering information.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a compact, low-cost solution for high-side current sensing is required. The 20 V/V gain version is appropriate for applications where the maximum expected load current results in a sense voltage that, when amplified, fits within the desired output voltage range. Consider the 12kΩ output impedance when connecting to downstream circuitry.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4173 series includes three gain versions: T (20 V/V), F (50 V/V), and H (100 V/V). The MAX4173TESA+ specifically denotes the 20 V/V gain variant packaged in an 8-pin Small Outline (SO) format. This family is designed for space-saving implementations in portable electronics and power management systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Other members of the MAX4173 family, such as MAX4173FESA+ or MAX4173HESA+, offer different fixed gains (50 V/V and 100 V/V respectively) but share the same package and pinout. Verify if the application requires a different amplification factor before substituting.