TPA6113A2DR

Audio Amplifiers Overview

The TPA6113A2DR is a stereo audio power amplifier manufactured by Texas Instruments in an 8-pin SOIC package. It delivers 40 mW of continuous RMS power per channel into 16-ohm loads at 5 V, and 16 mW into 16-ohm loads at 3.3 V. The device operates on a single supply voltage ranging from 2.5 V to 5.5 V with a typical quiescent current of 1.6 mA. Key electrical specifications include a THD+N of 0.4% at rated power, a signal-to-noise ratio of 94 dB, and a power supply rejection ratio of 70 dB. It features internal midrail generation and a shutdown pin for low-power modes.

Audio Amplifiers Feature Summary

• Integrated pop reduction circuitry that utilizes internal midrail generation to minimize audible startup transients
• Externally configurable gain settings using two resistors per input channel without requiring external compensation
• Built-in thermal protection and short-circuit protection mechanisms to ensure operational reliability

Audio Amplifiers Applications

• Portable digital radios and MP3 players
• Laptop computers and notebook PCs
• Handheld gaming devices
• Personal media players

Audio Amplifiers Procurement Notes

Verify the specific ordering suffix 'DR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the component status remains listed as Active production within official Texas Instruments product folders before finalizing procurement plans. Ensure compatibility with standard surface-mount reflow soldering profiles specified for the SOIC-8 package variant.

Audio Amplifiers Selection Notes

Select this component when designing battery-powered systems requiring a compact stereo solution with minimal external passive components. The high input impedance simplifies interface design with preceding stages. Evaluate the trade-off between output power capability and load impedance requirements, noting that performance varies significantly between 3.3-V and 5-V supply rails.

Audio Amplifiers Part Context

This device belongs to the TPA6113A2 family of CMOS audio amplifiers designed for low-voltage consumer electronics. It serves as a direct replacement for legacy mono or stereo amplifiers in space-constrained portable applications. The SOIC-8 footprint allows for easy integration into existing board layouts previously utilizing larger packages or multiple discrete components.

Audio Amplifiers Replacement Considerations

Consult official substitution matrices for verified alternatives such as the TPA6111 series or TPA6135 series depending on specific power and feature requirements.

Audio Amplifiers FAQ

How is the amplifier gain configured?

Gain is set externally using feedback (RF) and input (RI) resistors, supporting settings from 0 to 20 dB without requiring external compensation.

What is the function of the BYPASS pin?

The BYPASS pin connects to a capacitor that sets the rate of internal midrail generation, which helps reduce startup pop noise and improves power supply rejection.