MAX9721CEBC-T

Audio Amplifiers Overview

The MAX9721CEBC-T is a fixed-gain, stereo headphone amplifier designed for portable equipment. It utilizes DirectDrive architecture to produce ground-referenced outputs from a single supply, eliminating DC-blocking capacitors. The device operates from a single 0.9V to 1.8V supply and delivers up to 20mW per channel into a 32Ω load with 0.006% THD+N. It features an 80dB PSRR at 1kHz, ±8kV ESD protection on outputs, and comprehensive click-and-pop suppression. Supply current is 2.2mA, reducing to 1.0µA in shutdown mode.

Audio Amplifiers Feature Summary

• DirectDrive architecture generates ground-referenced outputs from a single supply without external DC-blocking capacitors
• Fixed gain configuration eliminates the need for external feedback networks
• Integrated click-and-pop circuitry suppresses audible transients during startup and shutdown
• Low-power shutdown mode significantly reduces supply current consumption

Audio Amplifiers Applications

• Portable audio equipment requiring minimal board space
• Single-cell battery-powered devices operating between 0.9V and 1.8V
• Systems powered directly by AA or AAA batteries
• Applications requiring high power-supply rejection from noisy digital supplies

Audio Amplifiers Procurement Notes

Verify the specific suffix 'CEBC' against official Analog Devices documentation to confirm package type and temperature range. Ensure compatibility with the required fixed gain variant (MAX9721C corresponds to -1V/V). Confirm RoHS compliance status via the manufacturer's datasheet before procurement.

Audio Amplifiers Selection Notes

Select this component when board space is limited and external capacitors must be avoided. The fixed -1V/V gain of the MAX9721C variant simplifies design by removing feedback components. Verify that the application voltage falls within the 0.9V to 1.8V range and that the 32Ω load impedance matches the specified performance metrics.

Audio Amplifiers Part Context

The MAX9721 series belongs to Maxim Integrated's portfolio of low-voltage audio amplifiers. This specific part integrates stereo headphone amplification with DirectDrive technology. It is engineered for ultra-portable applications where size, power efficiency, and audio quality are critical constraints.

Audio Amplifiers Replacement Considerations

Check for updated versions within the MAX9721 family. Verify pinout and electrical specifications against any successor models listed in official discontinuation notices.