MAX4298EUB+T

Audio Special Purpose Overview

The MAX4298EUB+T is a stereo headphone driver IC designed for single +5V applications in noisy digital environments. It features ultra-high power-supply rejection (115dB DC, 93dB at 20kHz) and Class AB rail-to-rail output drive capability. The device operates on a 4.5V to 5.5V supply with a quiescent current of 10.2mA to 17.5mA. It delivers 1.5VRMS into 10kΩ with 0.0008% THD+N and drives 32Ω loads to 1.2VRMS with 0.02% distortion. The unity-gain bandwidth is 1.3MHz, and it supports capacitive loads up to 22nF. Packaged in a 10-pin µMAX, it includes clickless/popless mute and power sequencing.

Audio Special Purpose Feature Summary

• Ultra-High PSRR: 115dB DC and 93dB at 20kHz for operation from noisy digital supplies
• High-Current Drive: Rail-to-Rail outputs driving 1.5VRMS into 10kΩ or 1.2VRMS into 32Ω
• Low Distortion: 0.0008% THD+N at 1.5VRMS into 10kΩ load
• Clickless/Popless Operation: Mute and power-up/down sequences prevent audible transients

Audio Special Purpose Applications

• Notebook and Desktop Audio Systems
• USB Audio Peripherals
• IP Telephones
• Wireless Internet Devices

Audio Special Purpose Procurement Notes

Verify the ordering suffix 'T' indicates Tape & Reel packaging as specified in local fields. Confirm the 'E' suffix denotes the -40°C to +85°C industrial temperature range. Ensure the component matches the 10-pin µMAX package profile. Cross-reference the manufacturer part number with official Analog Devices documentation to validate authenticity.

Audio Special Purpose Selection Notes

Select the MAX4298EUB+T when a stereo headphone driver is required without microphone amplification or linear regulation. Choose this over the MAX4299 if board space is limited and additional regulator/mic amp functions are unnecessary. Ensure the application requires a single +5V supply and benefits from high PSRR in noisy digital environments.

Audio Special Purpose Part Context

The MAX4298 is part of the MAX4298/MAX4299 family of audio system ICs. It shares the same core amplifier architecture as the MAX4299 but excludes the microphone preamplifier and 3.3V linear regulator found in the latter. Both devices utilize BiCMOS process technology and are designed for PC99 compliance in portable and desktop audio applications.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.