MAX4080SAUA+

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4080SAUA+ is a high-side, unidirectional current-sense amplifier manufactured by Analog Devices Inc./Maxim Integrated. It features an input common-mode voltage range of 4.5V to 76V and operates from a single supply voltage within the same limits. The device provides a fixed gain of 60V/V (indicated by the 'S' suffix) with a typical bandwidth of 250kHz. Key electrical specifications include a maximum input offset voltage of 1mV over the full temperature range, a maximum gain error of 1.2%, and a quiescent supply current of 190µA maximum. It is housed in an 8-pin µMAX package and supports an operating temperature range from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High-voltage monitoring capability with independent 4.5V to 76V common-mode and supply voltage ranges
• Fixed 60V/V gain configuration for precise amplification of small sense voltages
• Unidirectional sensing architecture suitable for standard load current measurement
• Space-saving 8-pin µMAX surface-mount packaging

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive battery monitoring for 12V, 24V, or 42V systems
• Telecom and backplane current measurement
• Power-management systems
• General system and board-level current sensing

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and RoHS compliance status. Ensure that the selected component matches the required gain version and temperature rating for the target application environment. Cross-reference the datasheet revision history for any updates to electrical characteristics or pin configurations prior to final procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a fixed 60V/V gain is appropriate for the expected sense voltage levels. Verify that the maximum output swing does not exceed the ADC input range or the supply rail limitations. Consider the power dissipation of the external sense resistor relative to the maximum expected load current to ensure accuracy and reliability under thermal stress conditions.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4080SAUA+ belongs to the MAX4080/MAX4081 family of high-side current-sense amplifiers. This series distinguishes between unidirectional (MAX4080) and bidirectional (MAX4081) variants. The SAUA+ designation specifically identifies the S suffix for 60V/V gain, the A suffix for the SO/µMAX package option, the U for µMAX form factor, and the + indicating lead-free/RoHS-compliant construction.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.