MAX4274ABEUA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4274ABEUA is a dual-channel fixed-gain amplifier from the GainAmp family, manufactured by Analog Devices Inc./Maxim Integrated. It integrates a rail-to-rail operational amplifier with factory-trimmed internal gain-setting resistors and VCC/2 biasing. The device operates on a single +2.5V to +5.5V supply or ±1.25V to ±2.75V dual supplies, consuming 300µA per amplifier. It features high-voltage fault protection capable of withstanding ±17V at either input without excessive current draw. The amplifier maintains stability with capacitive loads up to 470pF.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates precision internal gain-setting resistors for simplified design
• Provides rail-to-rail output capability driving a 1kΩ load
• Includes internal VCC/2 biasing at the noninverting input
• Features high-voltage fault protection withstands ±17V inputs

Instrumentation, Op Amps, Buffer Amps Applications

• Portable Instruments
• Smart-Card Readers
• Infrared Receivers for Remote Controls
• Keyless Entry Systems
• Low-Side Current-Sense Amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'AB' against official documentation to confirm temperature range and accuracy class. Confirm package type matches USOP-8 or similar variants listed in the datasheet. Check for obsolescence status as older Maxim products may be discontinued. Ensure compatibility with existing board layouts due to fixed pin configurations.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when fixed gain accuracy and low power consumption are required. The integrated resistors reduce external component count and layout complexity. Suitable for single-supply applications requiring midsupply biasing. Consider the GBW product limits for signal bandwidth requirements. Verify input voltage ranges to avoid saturation during operation.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX4174/MAX4175/MAX4274/MAX4275 GainAmp family. These devices combine low-cost rail-to-rail op amps with precision internal gain-setting resistors. The family includes open-loop unity-gain stable versions (MAX4281/2/4) and fixed-gain versions. The MAX4274 specifically offers dual channels with fixed gain options.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct replacements include other members of the GainAmp family such as MAX4174 or MAX4275 depending on channel count and biasing needs. Open-loop alternatives like MAX4281 can be used if external gain setting is acceptable. Verify pinout compatibility before substitution.