MAX4040EUA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4040EUA is a micropower operational amplifier from the MAX4040–MAX4044 family, manufactured by Analog Devices Inc./Maxim Integrated. It features rail-to-rail input and output capabilities, operating from a single +2.4V to +5.5V supply or dual ±1.2V to ±2.75V supplies. The device consumes only 10µA of supply current per amplifier and provides a 90kHz gain-bandwidth product. It is housed in an 8-pin µMAX package and operates over an extended temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input and output stages for full signal range utilization
• Ultra-low power consumption with 10µA supply current per amplifier
• Low input offset voltage of 200µV for precision applications
• Unity-gain stable for capacitive loads up to 200pF

Instrumentation, Op Amps, Buffer Amps Applications

• Battery-powered strain gauges
• Portable/battery-powered cellular phones
• Notebook computers and PDAs
• Digital scales
• Systems sensor amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix and package type when sourcing replacements. Confirm that the component matches the exact electrical specifications required for your design, particularly regarding supply voltage ranges and temperature ratings. Ensure compatibility with existing PCB footprints for the 8-pin µMAX package.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for low-voltage, battery-powered systems requiring high precision and minimal power consumption. It is suitable for general-purpose amplification where rail-to-rail performance is critical. Consider the MAX4041 or MAX4043 if a shutdown mode is needed to further reduce power usage.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4040EUA belongs to the MAX4040–MAX4044 family of single/dual/quad, low-cost, SOT23, micropower rail-to-rail I/O op amps. This family is designed for portable and battery-powered applications, offering a combination of low voltage operation, rail-to-rail inputs and outputs, and ultra-low power consumption.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include the MAX4040ESA (SO package) and MAX4040EUK-T (SOT23-5 package). Ensure the replacement part has the same pinout and electrical characteristics to maintain circuit functionality without redesign.

Instrumentation, Op Amps, Buffer Amps FAQ

What is the typical supply current for the MAX4040EUA?

The MAX4040EUA typically consumes 10µA of supply current per amplifier.

Is the MAX4040EUA unity-gain stable?

Yes, the MAX4040EUA is unity-gain stable for capacitive loads up to 200pF.

What is the input offset voltage of the MAX4040EUA?

The typical input offset voltage is 200µV, with a maximum of 500µV over the temperature range.