MAX9700CEUB+T

Audio Amplifiers Overview

The MAX9700CEUB+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 at 3.3V and 5V supplies. The device features a filterless modulation scheme that eliminates the need for external LC output filters. Gain is internally set to 15.6dB for the 'C' variant. It supports Fixed-Frequency Modulation (FFM) and Spread-Spectrum Modulation (SSM) modes via the SYNC pin, offering low EMI emissions and high PSRR of 72dB.

Audio Amplifiers Feature Summary

• Filterless architecture utilizing unique modulation to eliminate external LC output filters while passing FCC radiated emissions standards.
• Spread-spectrum mode reduces electromagnetic interference by spreading spectral energy, improving emissions performance over conventional methods.
• Fully differential input structure provides improved noise immunity and allows DC-coupled operation without input capacitors.
• Integrated click-and-pop suppression ensures silent startup and shutdown, preventing audible transients.

Audio Amplifiers Applications

• Cellular phones
• Portable MP3 players
• Personal Digital Assistants (PDAs)
• Portable audio devices

Audio Amplifiers Procurement Notes

Verify the specific suffix 'CEUB+T' against official manufacturer documentation to confirm the exact package type (µMAX), gain setting (15.6dB), and tape/reel packaging status. Ensure compatibility with system voltage requirements (2.5V to 5.5V) and thermal constraints for the 10-pin µMAX footprint during integration.

Audio Amplifiers Selection Notes

Select this component when board space is limited and external output filtering must be avoided. The 15.6dB internal gain suits direct drive from CODECs with moderate output levels. Consider the SSM mode if EMI sensitivity is critical, or FFM mode if precise clock synchronization with other system components is required.

Audio Amplifiers Part Context

The MAX9700 series represents Maxim's approach to high-efficiency audio amplification by removing traditional output filters. This family includes variants with different fixed gains (A: 6dB, B: 12dB, C: 15.6dB, D: 20dB) and packages (TDFN, µMAX, UCSP). The CEUB+T specifically denotes the 15.6dB gain version in the compact µMAX form factor.

Audio Amplifiers Replacement Considerations

Direct substitutes within the same family include MAX9700AEUB+ (6dB gain) and MAX9700BEUB+ (12dB gain) for identical packaging but different internal gain settings. Other package options like MAX9700AETB+ (TDFN) offer similar functionality with different thermal characteristics.