MAX9877ERP+T

Audio Amplifiers Overview

The MAX9877ERP+T is a mono audio subsystem integrating a Class D speaker amplifier and a stereo Class AB DirectDrive headphone amplifier. It operates on a single supply voltage ranging from 2.7V to 5.25V. The Class D section delivers up to 725mW into an 8Ω load at 3.7V with 87% efficiency, utilizing spread-spectrum modulation for low emissions. The headphone amplifier provides 53mW into 16Ω loads without external DC-blocking capacitors. Key electrical parameters include a quiescent current of 10mA, shutdown current of 22µA maximum, and input resistance varying by gain setting.

Audio Amplifiers Feature Summary

• Filterless Class D architecture with active emissions limiting and spread-spectrum modulation to reduce EMI without output filters.
• DirectDrive headphone amplifier generates ground-referenced outputs from a single supply, eliminating large DC-blocking capacitors.
• User-defined input mixer with three preamplifier gain settings, volume control, and I2C interface.
• Comprehensive protection features including click-and-pop suppression, current-limit, and thermal shutdown.

Audio Amplifiers Applications

• Cell Phones
• Portable Multimedia Players

Audio Amplifiers Procurement Notes

Verify the specific suffix ERP against official documentation to confirm package type and lead-free status. Confirm availability through authorized distributors as stock levels fluctuate. Ensure the ordering code matches the required temperature range and packaging format before finalizing procurement.

Audio Amplifiers Selection Notes

Select this component for designs requiring a combined speaker and headphone solution in space-constrained portable devices. The integrated DirectDrive feature reduces bill-of-materials count by removing output capacitors. Verify that the system power supply remains within the 2.7V to 5.25V operating range for optimal performance.

Audio Amplifiers Part Context

This part belongs to the Maxim Integrated audio subsystem family, designed for mobile applications. It combines high-efficiency amplification with low-noise headphone driving capabilities. The WLP package offers a thermally efficient and space-saving footprint suitable for dense PCB layouts in consumer electronics.

Audio Amplifiers Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical specifications such as supply voltage range and output power before replacing.