MAX97220DETE+T

Audio Amplifiers Overview

The MAX97220DETE+T is a stereo headphone amplifier and line driver featuring fully differential inputs and DirectDrive output architecture. It delivers 125mW into 32Ω at 5V supply with a fixed internal gain of +6dB. The device operates on a single supply from 2.5V to 5.5V, utilizing an internal charge pump to create bipolar rails for DC-coupled outputs. It includes click-and-pop suppression and low-power shutdown. Designed for set-top box applications, it features a 130ms turn-on time and is housed in a 16-pin TQFN package.

Audio Amplifiers Feature Summary

• DirectDrive output architecture eliminates the need for large DC-blocking capacitors by biasing outputs about ground via an internal charge pump.
• Fully differential input configuration provides improved noise immunity and common-mode rejection compared to single-ended designs.
• Integrated click-and-pop suppression circuitry prevents audible transients during power-up and shutdown transitions.
• Fixed internal gain setting simplifies external component requirements while maintaining high audio fidelity.

Audio Amplifiers Applications

• Set-Top Boxes
• Blu-ray and DVD Players
• LCD Televisions

Audio Amplifiers Procurement Notes

Verify the specific suffix 'D' indicates the set-top box variant with extended turn-on time. Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the exact pinout and thermal pad requirements for the TQFN-EP package.

Audio Amplifiers Selection Notes

Select this component when a fixed gain of +6dB is required for direct codec interfacing. Choose the D version specifically for applications requiring a slower turn-on time to prevent pop noises in set-top boxes. Ensure the design accommodates the 130ms startup delay before audio signals are processed.

Audio Amplifiers Part Context

This device belongs to the MAX97220 family of DirectDrive amplifiers. It shares the same footprint as the legacy MAX9722 but offers improved performance and integrated charge pump functionality. The D variant is distinct from the A, C, and E versions due to its specific turn-on timing characteristics tailored for consumer electronics.

Audio Amplifiers Replacement Considerations

MAX97220CETE+T

Audio Amplifiers FAQ

What distinguishes the MAX97220D from other variants in the series?

The MAX97220D features a longer turn-on time of 130ms, designed specifically for set-top box applications to minimize audible clicks, whereas A, C, and E versions have a faster 5.5ms turn-on time.

How does the DirectDrive architecture benefit the design?

It allows the amplifier outputs to be biased directly about ground using an internal charge pump, eliminating the need for bulky and distortion-prone DC-blocking output capacitors.