TPA122D

Overview

The TPA122D is a stereo audio power amplifier manufactured by Texas Instruments, designed for operation within a supply voltage range of 2.5 V to 5.5 V. It delivers 150 mW of output power per channel into an 8-ohm load at 5 V. The device utilizes Class AB topology and features a fixed gain of 36 dB. It is housed in an 8-pin SOIC package with thermal pad options.

Feature Summary

• Stereo audio amplification with low distortion characteristics
• Operates on single supply voltages from 2.5 V to 5.5 V
• Fixed internal gain configuration for simplified circuit design

Applications

• Portable media players
• Mobile phones
• Personal digital assistants

Procurement Notes

Verify the specific suffix (e.g., DR) against the datasheet to confirm tape-and-reel packaging if required. Ensure the selected variant matches the intended operating voltage and thermal management requirements for the target application.

Selection Notes

Select this component for low-voltage portable applications requiring stereo output. Consider the 8-SOIC package constraints for thermal dissipation. Verify compatibility with 3.3 V and 5 V logic levels for control signals.

Part Context

Part of the TPA122 family of stereo audio amplifiers. Designed for battery-powered devices where efficiency and small form factor are critical. Offers a balance between sound quality and power consumption for consumer electronics.

Replacement Considerations

Check for direct pin-compatible alternatives within the same manufacturer's portfolio that offer similar power ratings and supply voltage ranges. Verify package dimensions and thermal performance before substitution.