MAX4257EUA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4257EUA is a dual-channel, low-noise, low-distortion operational amplifier from the MAX4249–MAX4257 series. It features rail-to-rail outputs and single-supply operation from 2.4V to 5.5V. The device draws 400µA of quiescent supply current per amplifier. It has a gain-bandwidth product of 22MHz and is internally compensated for gains of 10V/V or greater. Key electrical characteristics include an input offset voltage of 70µV, input bias current of 1pA, and output short-circuit current of 68mA. It operates over a temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low distortion performance with 0.0002% THD
• Rail-to-rail output capability with ground-sensing inputs
• Low power consumption at 400µA per amplifier
• Capacitive-load handling up to 400pF

Instrumentation, Op Amps, Buffer Amps Applications

• Wireless Communications Devices
• Portable/Battery-Powered Equipment
• Medical Instrumentation
• ADC Buffers
• Digital Scales/Strain Gauges

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package type (µMAX) and suffix against official documentation to ensure compatibility with your design requirements. Confirm that the component meets all necessary environmental and safety standards for your intended application before finalizing procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the MAX4257EUA when a dual-channel configuration is required with high bandwidth and low noise. Ensure the circuit gain is set to 10V/V or greater for stability. Consider the space-saving µMAX package if board real estate is limited compared to standard SOIC options.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4257 is part of the MAX4249–MAX4257 family of UCSP, single-supply, low-noise, low-distortion, rail-to-rail op amps. This series offers various channel counts and packages, including SOT23, µMAX, and UCSP, catering to diverse portable and battery-powered applications requiring precision signal conditioning.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct replacements within the same family include MAX4257ESA+ (SOIC-8 package). Verify pinout and electrical specifications match exactly before substitution.