MAX97220EETE+T

Audio Amplifiers Overview

The MAX97220EETE+T is a differential input DirectDrive line driver and headphone amplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single supply voltage ranging from 2.5V to 5.5V. The device delivers an output power of 125mW into a 32-ohm load with a 5V supply. It features fully differential inputs, external gain setting via resistors, and click-and-pop suppression. The unit is housed in a 16-pin TQFN package (3mm x 3mm) and functions within an extended temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• DirectDrive architecture eliminates the need for large DC-blocking output capacitors by utilizing an internal charge pump to create a negative rail.
• Fully differential input configuration provides improved noise immunity and compatibility with various audio codecs.
• Integrated click-and-pop suppression circuitry prevents audible transients during power-on and shutdown transitions.
• External feedback resistors allow for flexible gain adjustment while maintaining high signal-to-noise ratio performance.

Audio Amplifiers Applications

• Set-top boxes
• Blu-ray and DVD players
• LCD televisions
• Prosumer audio devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'E' indicates external gain setting and a turn-on time of 5.5ms. Confirm the '+T' designation corresponds to reel packaging. Ensure the component matches the 16-pin TQFN footprint. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity and revision status before integration.

Audio Amplifiers Selection Notes

Select this model when external gain control is required rather than fixed internal gain. It is suitable for applications needing fast turn-on times compared to set-top box variants. Verify that the system can accommodate the necessary external feedback and input resistors. Ensure the PCB layout supports the exposed thermal pad for adequate heat dissipation under maximum load conditions.

Audio Amplifiers Part Context

This component belongs to the MAX97220 family of DirectDrive amplifiers. It shares pinout compatibility with the legacy MAX9722, allowing for potential footprint reuse with minor circuit adjustments. The E variant specifically targets headphone applications requiring adjustable gain settings and rapid startup characteristics.

Audio Amplifiers Replacement Considerations

The MAX97220AETE+T and MAX97220BETE+T are alternative versions within the same family. Note that the A version has internally fixed gain, while the B version has a longer turn-on time. Verify functional equivalence regarding gain configuration and timing requirements before substitution.

Audio Amplifiers FAQ

How does the DirectDrive architecture benefit the design?

It uses an internal charge pump to create a negative supply, biasing outputs around ground. This removes the need for bulky DC-blocking capacitors, saving board space and improving low-frequency response.

What determines the gain of the MAX97220EETE+T?

The gain is determined by external input and feedback resistors connected to the gain setting nodes, unlike the C and D versions which have a fixed internal gain.