MAX4080FASA+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4080FASA+T is a high-side, unidirectional current-sense amplifier manufactured by Analog Devices Inc./Maxim Integrated. It features a wide input common-mode voltage range from 4.5V to 76V, independent of the supply voltage. The device provides a fixed gain of 5V/V and operates with a supply current of 75µA. It is specified for an automotive operating temperature range of -40°C to +125°C and is housed in an 8-pin SO package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Supports high-voltage monitoring with a 4.5V to 76V common-mode input range
• Provides unidirectional current sensing with a fixed 5V/V gain
• Features low quiescent supply current of 75µA for power efficiency
• Designed for automotive applications with operation up to +125°C

Instrumentation, Op Amps, Buffer Amps Applications

• Automotive battery monitoring (12V, 24V, or 42V systems)
• 48V 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 suffix FASA+T against the manufacturer's official documentation to confirm the exact gain version, package type, and RoHS compliance status. Ensure the component meets the required automotive temperature specifications (-40°C to +125°C) for your application environment. Cross-reference the ordering information in the datasheet to validate the part number configuration before procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high-side current monitoring where the sense voltage exceeds the available supply voltage. The fixed 5V/V gain is suitable for larger sense voltages up to 1000mV. Consider the 8-pin SO package constraints for board space. Verify that the load current and sense resistor power dissipation align with the device's operational limits and accuracy requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX4080/MAX4081 family of high-side current-sense amplifiers. The MAX4080 variant specifically offers unidirectional sensing, whereas the MAX4081 supports bidirectional sensing. The 'F' suffix indicates a fixed gain of 5V/V, distinguishing it from the T (20V/V) and S (60V/V) variants within the same product line.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

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