LM4898ITLX/NOPB

Audio Amplifiers Overview

The LM4898ITLX/NOPB is a fully differential audio power amplifier designed for mobile phones and portable communication devices. It delivers 1W of continuous average power to an 8Ω BTL load with less than 1% THD+N from a 5VDC supply, or 400mW at 3.3V. The device operates on a single supply voltage ranging from 2.4V to 5.5V. Key electrical specifications include a quiescent current of 3mA (max) at 5V, a shutdown current of 0.1µA (typ), and a power supply rejection ratio of 83dB at 217Hz. It features improved pop and click circuitry and can drive capacitive loads up to 500pF.

Audio Amplifiers Feature Summary

• Fully differential amplification architecture providing bridge-tied-load output without requiring output coupling capacitors.
• Ultra-low current shutdown mode with selectable high or low logic activation to minimize power consumption.
• Advanced pop and click circuitry that virtually eliminates noises during turn-on and turn-off transitions.
• Internal thermal shutdown protection mechanism to safeguard the device under overload conditions.

Audio Amplifiers Applications

• Mobile phones
• PDAs
• Portable electronic devices

Audio Amplifiers Procurement Notes

Verify the specific suffix ITLX against the official datasheet to confirm package type and tape/reel configuration. Ensure the component matches the required operating temperature range and supply voltage specifications for your design. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and production status before finalizing procurement.

Audio Amplifiers Selection Notes

Select this amplifier when space-saving packages like DSBGA are required alongside fully differential performance. It is suitable for applications needing minimal external components and low voltage operation. Consider the thermal requirements if driving low impedance loads, as the exposed die attach paddle requires proper PCB mounting for optimal heat dissipation.

Audio Amplifiers Part Context

The LM4898 belongs to Texas Instruments' Boomer audio power amplifier family, which focuses on high-quality output with minimal external components. This specific model is engineered for demanding portable communication applications where low power consumption and small form factor are critical constraints.

Audio Amplifiers Replacement Considerations

LM4898MMBD is a documented alternative package variant within the same product line.