MAX4465EXK-T

Audio Amplifiers Overview

The MAX4465EXK-T is a micropower operational amplifier optimized for microphone preamplifier applications. It operates from a single +2.4V to +5.5V supply with a typical quiescent current of 24µA. The device features unity-gain stability and delivers a gain bandwidth product of 200kHz. Electrical characteristics include an input offset voltage of ±1mV (max), an input bias current of ±100nA, and a common-mode rejection ratio of 80dB minimum. The output stage provides rail-to-rail swing, typically within 16mV of the rails under load. It is housed in a 5-pin SC70 package and supports an operating temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Optimized for low-voltage operation with high power-supply and common-mode rejection ratios suitable for noisy environments
• Features rail-to-rail outputs capable of driving loads while maintaining signal integrity near supply rails
• Delivers a balanced combination of gain bandwidth and low quiescent supply current for extended battery life

Audio Amplifiers Applications

• Microphone Preamplifiers
• Hearing Aids
• Cellular Phones
• Voice-Recognition Systems
• Portable Computing

Audio Amplifiers Procurement Notes

Verify that the component matches the specific ordering code MAX4465EXK-T to ensure correct package type and temperature rating. Confirm RoHS compliance status as indicated by the suffix. Check datasheet specifications against system requirements for supply voltage and current consumption. Ensure proper handling procedures are followed due to the small surface-mount packaging.

Audio Amplifiers Selection Notes

Select this part when designing circuits requiring a single-supply microphone preamplifier with minimal power consumption. The unity-gain stability makes it suitable for buffer configurations or low-gain amplification. Consider the 200kHz bandwidth for voice-frequency applications. Verify that the 5-pin SC70 package fits the available board space constraints.

Audio Amplifiers Part Context

This component belongs to the MAX4465–MAX4469 family of micropower op amps designed specifically for audio sensing interfaces. The series offers variations in gain bandwidth and shutdown capabilities across different pin packages. The MAX4465 variant focuses on basic preamplification without shutdown control, distinguishing it from the MAX4467/MAX4468 models which include complete shutdown modes.

Audio Amplifiers Replacement Considerations

Direct substitutes within the same family include MAX4465EUK+T, which shares identical electrical characteristics but utilizes a 5-pin SOT23 package instead of SC70. Other variants like MAX4466 offer higher bandwidth but require a minimum stable gain of +5V/V.