LME49610TS/NOPB

Audio Amplifiers Overview

The LME49610TS/NOPB is a high-performance, low-distortion audio buffer manufactured by Texas Instruments. It provides a typical output current of 250 mA and features pin-selectable bandwidth modes: 120 MHz at 13 mA quiescent current (BW pin floating) and 200 MHz at 19 mA quiescent current (BW pin connected to VEE). The device operates on dual supply voltages ranging from ±2.25 V to ±22 V. Key electrical specifications include a typical slew rate of 2000 V/μs and total harmonic distortion plus noise of 0.00003% at 1 kHz. It utilizes a TO-263 surface-mount package.

Audio Amplifiers Feature Summary

• Pin-selectable bandwidth configuration allows switching between low power and wide bandwidth modes via the BW control pin.
• High output current capability enables driving low impedance loads such as headphones or capacitive sources.
• Integrated short circuit protection and thermal shutdown circuits ensure device reliability under fault conditions.
• Low distortion characteristics support high-fidelity audio signal buffering within operational amplifier feedback loops.

Audio Amplifiers Applications

• Headphone amplifier output drive stages
• Line drivers requiring high current capability
• Low power audio amplifier output stages
• High-current operational amplifier output stage boosters

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix matches the required package variant and compliance standards. Confirm that the BW pin configuration aligns with the desired bandwidth and quiescent current trade-off for the target application. Ensure proper PCB layout practices are followed to manage thermal dissipation through the exposed pad, as the metal tab connects electrically to the negative supply rail.

Audio Amplifiers Selection Notes

Select this component when an audio buffer requires both high current delivery and adjustable bandwidth performance. The device is suitable for applications where minimizing thermal feedback and improving capacitive load drive stability is critical. Consider the quiescent current increase in wide bandwidth mode against the system's power budget constraints.

Audio Amplifiers Part Context

This part belongs to the LME49610 series of high-performance audio buffers designed by Texas Instruments. It is engineered to complement high-fidelity operational amplifiers by increasing their output current capabilities without compromising signal integrity. The series targets professional audio and high-end consumer electronics requiring precise signal buffering.

Audio Amplifiers Replacement Considerations

Direct functional substitutes may include other high-current audio buffers from the same manufacturer family, provided they match the TO-263 package and voltage ratings. Verify pin compatibility and thermal characteristics before substitution.

Audio Amplifiers FAQ

How is the bandwidth of the LME49610 adjusted?

Bandwidth is adjusted via the BW pin. Leaving it unconnected sets a 120 MHz bandwidth with lower quiescent current, while connecting it to VEE extends the bandwidth to 200 MHz with higher quiescent current.

What is the electrical connection of the package tab?

The exposed die attach paddle (tab) of the TO-263 package is electrically connected to the VEE power supply pin and must be soldered to the circuit board copper area for heat dissipation.