LM48861TM

Audio Amplifiers Overview

The LM48861TM is a Class-AB stereo headphone amplifier manufactured by Texas Instruments, formerly National Semiconductor. It delivers 24 mW of output power into a 32 Ohm load with a THD+N of 0.04%. The device operates on a single supply voltage ranging from 1.2 V to 2.8 V and draws a typical operating current of 2 mA. It features a single analog input type and is housed in a uSMD package suitable for surface mount installation. The component functions within an ambient temperature range of -40°C to +85°C.

Audio Amplifiers Feature Summary

• Stereo audio amplification capability with low total harmonic distortion plus noise
• Single-supply operation optimized for portable battery-powered applications
• Low quiescent current consumption for extended battery life

Audio Amplifiers Applications

• Portable audio devices requiring stereo headphone output
• Mobile communication handsets
• Personal digital assistants (PDAs)
• Handheld multimedia players

Audio Amplifiers Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix NOPB indicates lead-free compliance if required by assembly specifications. Ensure the uSMD package variant matches the intended PCB footprint design constraints for the target application.

Audio Amplifiers Selection Notes

Select this component when a compact stereo solution is needed for low-voltage systems. The 1.2 V minimum supply voltage allows compatibility with single-cell lithium-ion batteries. The low THD+N specification ensures high-fidelity audio reproduction for consumer electronics where sound quality is critical.

Audio Amplifiers Part Context

This part belongs to the LM48861 series of audio amplifiers designed for mobile applications. It represents the transition period where National Semiconductor products were integrated into Texas Instruments' portfolio. The device addresses the need for small form-factor audio solutions in handheld devices during the mid-2000s era of portable electronics.

Audio Amplifiers Replacement Considerations

Consult official datasheets for direct pin-compatible substitutes within the LM48861 family or newer generations of TI headphone amplifiers. Verify that alternative components maintain the same uSMD package dimensions and electrical characteristics for seamless integration.