MAX4465EXK

Audio Amplifiers Overview

The MAX4465EXK is a micropower operational amplifier optimized for microphone preamplifier applications, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a supply voltage ranging from +2.4V to +5.5V and features rail-to-rail outputs with high open-loop voltage gain (AVOL) of 125dB at RL = 100kΩ. The device delivers a gain bandwidth product of 200kHz while consuming only 24µA of quiescent supply current. It exhibits excellent power-supply rejection ratio (PSRR) of 112dB and common-mode rejection ratio (CMRR) of 126dB. The component is housed in a space-saving 5-pin SC-70 package.

Audio Amplifiers Feature Summary

• Optimized for microphone preamplifier use with low quiescent current consumption
• Rail-to-rail output capability for maximum dynamic range
• High power-supply and common-mode rejection ratios for noisy environments
• Unity-gain stable operation with 200kHz gain bandwidth product

Audio Amplifiers Applications

• Microphone preamplification circuits
• Portable audio recording devices
• Battery-powered acoustic sensors

Audio Amplifiers Procurement Notes

Verify the specific suffix 'EXK' against the manufacturer's official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the component source is authorized to guarantee authenticity and traceability. Check for RoHS compliance status as indicated in the official documentation before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component when designing low-power audio front-ends requiring rail-to-rail performance. It is suitable for single-supply operations between 2.4V and 5.5V. Consider the 200kHz bandwidth limit for audio frequency applications. Verify that the SC-70 package fits the PCB layout constraints.

Audio Amplifiers Part Context

The MAX4465 belongs to the MAX4465–MAX4469 family of micropower op amps. This series offers an optimized combination of gain bandwidth product versus supply current. Unlike decompensated versions like the MAX4466, the MAX4465 is unity-gain stable, making it versatile for various feedback configurations in compact electronic designs.

Audio Amplifiers Replacement Considerations

The MAX4466EXK is a related part within the same family but is decompensated for a minimum stable gain of +5V/V with a 600kHz gain bandwidth product. Direct substitution requires verifying circuit stability and gain requirements.