MAX4471ESA+

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4471ESA+ is a dual micropower operational amplifier from the Maxim Integrated MAX4470 family, housed in an 8-pin SO package. It operates on a single supply voltage ranging from +1.8V to +5.5V with a typical supply current of 750nA per amplifier. The device features ground-sensing inputs and rail-to-rail output capability, allowing the output to swing within 4mV of the rails under a 100kΩ load. It is unity-gain stable with a gain-bandwidth product of 9kHz and offers high open-loop voltage gain of 120dB.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low power consumption with 750nA supply current per amplifier
• Ground-sensing input common-mode range extending to negative rail
• Rail-to-rail output stage capable of driving loads close to supply rails
• Unity-gain stability for flexible closed-loop configuration

Instrumentation, Op Amps, Buffer Amps Applications

• Single lithium ion battery systems
• Two-cell NiCd or alkaline battery powered devices
• Portable instrumentation
• Micropower thermostats
• Remote sensor active badges

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the component matches the specific MAX4471ESA+ designation, ensuring it is the dual amplifier variant in the 8-pin SO package. Confirm the temperature range is -40°C to +85°C as specified for this part number. Check for lead-free/RoHS compliance indicated by the '+' suffix. Ensure the source documentation aligns with Analog Devices/Maxim Integrated official datasheets for accurate electrical parameter validation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the MAX4471ESA+ when a dual-channel solution is required for low-voltage, battery-operated applications. It is suitable for designs needing unity-gain stability and rail-to-rail output performance. Consider the 8-pin SO package for PCB layout constraints. Compare against other family members like the MAX4464 if higher bandwidth or decompensated stability at gains greater than +5V/V is needed instead.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the MAX4464/MAX4470/MAX4471/MAX4472/MAX4474 family of micropower op amps. The MAX4471 specifically denotes the dual-configuration version within this series. Other variants include the single MAX4464/MAX4470 and quad MAX4472. The family shares core characteristics such as ultra-low supply current and rail-to-rail outputs, differentiated primarily by channel count and stability compensation.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include the MAX4471EKA+ (SOT23-8) and MAX4471EXK+ (SC70-5) for pin-compatible alternatives in different packages. For single-channel needs, the MAX4470EXK+ or MAX4470EUK+ may be considered if channel count reduction is acceptable.