MAX4275AOESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4275AOESA-T is a dual-channel fixed-gain amplifier from the GainAmp family, operating on a single +2.5V to +5.5V supply with a typical supply current of 300µA per amplifier. It features factory-trimmed internal gain-setting resistors providing 0.1% gain accuracy and an internal VCC/2 bias at the noninverting input for simplified single-supply designs. The device offers rail-to-rail outputs capable of driving a 1kΩ load, high-voltage fault protection up to ±17V at either input without excessive current draw, and stability with capacitive loads up to 470pF.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates precision laser-trimmed internal gain-setting resistors for fixed inverting or noninverting gains with 0.1% accuracy.
• Includes internal VCC/2 biasing at the noninverting input to simplify AC-coupled single-supply applications.
• Features high-voltage fault protection allowing inputs to withstand ±17V relative to VEE without phase reversal.
• Provides rail-to-rail output swing while maintaining excellent DC accuracy under load.

Instrumentation, Op Amps, Buffer Amps Applications

• Portable instruments
• Smart-card readers
• Infrared receivers for remote controls
• Low-side current-sense amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'AOESA' against official manufacturer documentation to confirm package type and temperature range. Confirm availability status as this component may be subject to lifecycle changes. Ensure design compatibility with the specified single-supply voltage range and gain requirements before procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this part when a fixed gain configuration is required to reduce external component count and layout complexity. The internal VCC/2 bias makes it suitable for single-supply AC-coupled applications where mid-supply referencing is needed. Consider the 300µA supply current for battery-powered designs requiring low power consumption.

Instrumentation, Op Amps, Buffer Amps Part Context

This component belongs to the Maxim Integrated GainAmp family, which combines low-cost rail-to-rail op amps with precision internal gain-setting resistors. The family includes open-loop unity-gain stable versions (MAX428x) and fixed-gain variants (MAX4174/5, MAX4274/5). The MAX4275 specifically adds internal VCC/2 biasing to the standard fixed-gain architecture.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The MAX4175 serves as the single-channel equivalent within the same family. For quad-channel configurations, the MAX4275 is available. Verify that the replacement maintains the required gain setting and package compatibility.