MAX9700DEBC+T

Audio Amplifiers Overview

The MAX9700DEBC+T is a mono Class D audio power amplifier from Analog Devices/Maxim Integrated. It delivers 1.2W into an 8Ω load with over 90% efficiency. The device features a low-EMI modulation scheme that eliminates the need for output filters. Electrical specifications include a supply voltage range of 2.5V to 5.5V, quiescent current of 4mA, and shutdown current of 0.1μA. Audio performance metrics are 0.01% THD+N and SNR exceeding 90dB. It operates within a temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Filterless architecture utilizing unique modulation to pass FCC radiated emissions standards without external LC components.
• Spread-spectrum mode reduces EMI-radiated emissions by 5dB compared to conventional fixed-frequency methods.
• Fully differential input architecture minimizes common-mode noise pickup and allows DC-coupled operation.
• Integrated click-and-pop suppression prevents audible transients during startup and shutdown sequences.

Audio Amplifiers Applications

• Cellular Phones
• PDAs
• MP3 Players
• Portable Audio

Audio Amplifiers Procurement Notes

Verify the specific suffix 'DEBC' corresponds to the 12-bump UCSP package and 20dB gain variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the source is an authorized distributor or manufacturer representative to guarantee component authenticity and traceability.

Audio Amplifiers Selection Notes

Select this model when board space conservation is critical due to its filterless design and compact UCSP packaging. Choose the 20dB internal gain setting if it matches the source codec output level requirements. Consider the spread-spectrum capability for designs sensitive to electromagnetic interference in dense layouts.

Audio Amplifiers Part Context

This component belongs to the MAX9700 family of low-power, high-efficiency audio amplifiers. It is designed to replace traditional Class AB amplifiers in portable electronics to extend battery life. The DEBC designation specifically identifies the 12-bump UCSP package configuration with a fixed 20dB gain.

Audio Amplifiers Replacement Considerations

Direct substitutes within the same family include MAX9700AEBC+T (6dB gain) and MAX9700BEBC+T (12dB gain). Verify that the gain difference does not require circuit redesign. Other packages like TDFN or μMAX offer identical electrical performance but different physical footprints.

Audio Amplifiers FAQ

How is the Spread-Spectrum Modulation (SSM) mode activated?

SSM mode is activated by connecting the SYNC pin to VDD. This spreads the switching frequency randomly around 1.22MHz to reduce EMI peaks.

What is the purpose of the SYNC input?

The SYNC input allows synchronization to an external clock (800kHz to 2MHz) or enables master-slave stereo configurations to prevent beat frequencies between multiple devices.

Does the MAX9700 require an output filter?

No, the MAX9700 uses a filterless modulation scheme that relies on the speaker's inherent inductance and the human ear's natural filtering to recover the audio signal.