LM4980SDX/NOPB

Audio Amplifiers Overview

The LM4980SDX/NOPB is a stereo headphone audio amplifier from the Boomer AudioPowerAmplifierSeries. It operates on a single supply voltage ranging from 1.5V to 3.3V, making it suitable for two-cell battery applications. At a 3.0V supply and 16Ω load with less than 1% THD+N, it delivers 42mW per channel. The device features unity-gain stability and includes click-and-pop suppression circuitry to minimize output transients during power-on and shutdown. Quiescent current is typically 1mA at 3V, while micro-power shutdown reduces current to 0.1µA.

Audio Amplifiers Feature Summary

• Integrated click and pop suppression circuitry minimizes audible transients during device turn-on and turn-off without requiring costly external components.
• Active low micro-power shutdown mode significantly reduces quiescent current consumption when the amplifier is not in use.
• Unity-gain stable design allows for straightforward implementation with minimal external components.
• Built-in thermal shutdown protection safeguards the device against overheating under fault conditions.

Audio Amplifiers Applications

• Portable two-cell audio products
• Portable MP3 players and recorders
• Portable electronic devices

Audio Amplifiers Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging and RoHS compliance. Confirm that the operating voltage range aligns with your system's power supply specifications. Ensure proper PCB layout practices are followed to minimize trace impedance and optimize total harmonic distortion performance as recommended in the datasheet application information.

Audio Amplifiers Selection Notes

Select this component for applications requiring high-fidelity stereo audio amplification from low-voltage dual-cell batteries. Consider the package size constraints and the need for integrated transient suppression. Evaluate the required output power against the load impedance and supply voltage to ensure the device meets the specific audio performance criteria of the target portable electronics.

Audio Amplifiers Part Context

The LM4980 belongs to Texas Instruments' Boomer AudioPowerAmplifierSeries, which focuses on providing high-quality output power in surface mount packages with few external components. This series is designed specifically for portable audio applications where space and power efficiency are critical constraints.

Audio Amplifiers Replacement Considerations

Consult official Texas Instruments documentation for verified substitute part numbers within the same product family or equivalent specifications.

Audio Amplifiers FAQ

How does the LM4980 handle output transients?

The LM4980 features dedicated click and pop suppression circuitry that significantly reduces output transients during device turn-on and turn-off, eliminating the need for additional external components.

What is the typical shutdown current?

When the active low shutdown pin is driven low, the LM4980 enters micro-power shutdown mode with a typical current consumption of 0.1µA.