MAX4466EXK+T

Audio Amplifiers Overview

The MAX4466EXK+T is a micropower operational amplifier optimized for microphone preamplifier applications. It operates from a +2.4V to +5.5V supply with a typical quiescent current of 24µA. The device features a 600kHz gain bandwidth product and requires a minimum stable gain of +5V/V. It provides rail-to-rail outputs, high open-loop gain (125dB), excellent power-supply rejection (112dB), and common-mode rejection (126dB). The component is housed in a 5-pin SC70 package and supports an operating temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Decompensated design optimized for gains of +5V/V or higher
• Rail-to-Rail output stage capability
• High common-mode and power-supply rejection ratios

Audio Amplifiers Applications

• Microphone Preamplifiers
• Hearing Aids
• Cellular Phones
• Voice-Recognition Systems
• Digital Dictation Devices

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix EXK+T against official documentation to confirm the SC70 package type and lead-free/RoHS compliance status. Ensure the application circuit maintains a closed-loop gain of at least +5V/V to guarantee stability, as this model is decompensated. Confirm that the supply voltage remains within the specified 2.4V to 5.5V range during operation.

Audio Amplifiers Selection Notes

Select the MAX4466EXK+T when a higher gain bandwidth product is required compared to unity-gain stable variants. This decompensated op amp is suitable for full-range audio inputs where a minimum gain of +5V/V can be maintained. It is appropriate for portable computing and voice-recognition systems requiring low power consumption and small footprint solutions.

Audio Amplifiers Part Context

The MAX4466EXK+T belongs to the MAX4465–MAX4469 family of micropower op amps designed specifically for microphone preamplification. While the MAX4465/4467/4469 are unity-gain stable with a 200kHz gain bandwidth, the MAX4466/4468 are decompensated for a minimum stable gain of +5V/V, offering a 600kHz gain bandwidth product. The 'E' indicates the industrial temperature range, 'XK' denotes the SC70 package, and '+T' signifies tape-and-reel packaging.

Audio Amplifiers Replacement Considerations

The MAX4465EXK+T offers similar packaging but is unity-gain stable with lower bandwidth. The MAX4467EXK+T includes shutdown functionality but uses an 8-pin SOT23 package. Verify that any substitute meets the minimum stable gain requirement of +5V/V to prevent oscillation.