MAX9700BEUB+T

Audio Amplifiers Overview

The MAX9700BEUB+T is a mono Class D audio power amplifier from Analog Devices/Maxim Integrated, housed in a 10-pin μMAX package. It delivers 1.2W into an 8Ω load with over 90% efficiency and features a low-EMI spread-spectrum modulation scheme that eliminates the need for output filters. The device operates on a single supply voltage ranging from 2.5V to 5.5V, with a quiescent current of 4mA and shutdown current of 0.1μA. It offers a gain of 12dB, 72dB PSRR at 217Hz, and 0.01% THD+N. Operating temperature range is -40°C to +85°C.

Audio Amplifiers Feature Summary

• Filterless architecture utilizing unique modulation to pass FCC radiated emissions standards without external LC filters
• Spread-spectrum mode reduces EMI-radiated emissions by 5dB compared to conventional methods
• Fully differential input structure with integrated click-and-pop suppression for noise immunity
• Optional external SYNC input allows frequency synchronization and master-slave stereo configuration

Audio Amplifiers Applications

• Cellular Phones
• PDAs
• MP3 Players
• Portable Audio

Audio Amplifiers Procurement Notes

Verify the specific suffix BEUB corresponds to the 10-pin μMAX package variant when sourcing. Confirm RoHS compliance status (+ suffix) and check for production availability as older Maxim products may have transitioned statuses. Ensure design-in documentation matches the exact pinout and thermal requirements for the μMAX footprint.

Audio Amplifiers Selection Notes

Select this component for space-constrained portable designs requiring high efficiency and minimal external components. The 12dB internal gain suits direct drive from CODECs. Consider the μMAX package for applications needing a compact surface-mount solution with good thermal dissipation characteristics relative to its size.

Audio Amplifiers Part Context

Part of the MAX9700 family of filterless Class D amplifiers. Other variants include A, C, and D subtypes with different fixed gains (6dB, 15.6dB, 20dB). Available in TDFN and UCSP packages. Designed to replace linear amplifiers in battery-powered devices to extend runtime while maintaining audio quality.

Audio Amplifiers Replacement Considerations

Direct functional substitutes within the same family include MAX9700AEUB+ (6dB gain), MAX9700CEUB+ (15.6dB gain), and MAX9700DEUB+ (20dB gain). Package variations like MAX9700BETB+ (TDFN) offer identical electrical performance in different footprints.