TPA3116D2DADR

Overview

The TPA3116D2DADR is a stereo Class-D audio power amplifier manufactured by Texas Instruments. It delivers up to 50W per channel into a 4-ohm load with a 21V supply, or 100W in PBTL mode into a 2-ohm load. The device operates on a supply voltage range of 4.5V to 26V and features a THD+N of 0.1%. It utilizes an HTSSOP-32 package with the PowerPAD facing upward for thermal management. The amplifier supports analog inputs and includes integrated SpeakerGuard protection.

Feature Summary

• Integrates BD modulation architecture to enable filterless operation, reducing component count and cost while maintaining high efficiency above 90%.
• Includes comprehensive SpeakerGuard protection circuitry that monitors for over-voltage, under-voltage, over-temperature, DC offset, and short-circuit conditions.
• Supports master-slave synchronization via PLL to allow multiple devices to operate simultaneously without audible beat frequencies.

Applications

• Active loudspeakers and powered PA systems
• Soundbars and home theater audio systems
• Portable battery-powered audio equipment
• Aftermarket automotive audio upgrades

Procurement Notes

Verify the specific suffix DADR confirms the HTSSOP-32 package orientation and tape-and-reel packaging format. Ensure the procurement source provides official datasheets confirming the 4.5V to 26V operating range and 50W output specifications. Cross-reference the manufacturer part number against current lifecycle status to confirm availability and compliance with RoHS standards.

Selection Notes

Select this component when designing high-efficiency stereo audio systems requiring significant power output in a compact form factor. It is suitable for applications where minimizing external passive components is critical. Consider the thermal requirements associated with the upward-facing PowerPAD if operating near maximum power levels. Verify that the application environment stays within the specified -40°C to +85°C temperature range.

Part Context

This device belongs to the TPA31xxD2 series of efficient digital amplifiers from Texas Instruments. It shares architectural similarities with models like the TPA3118D2 and TPA3130D2 but offers higher power capabilities. The series is designed to replace traditional linear amplifiers in consumer electronics, providing superior energy efficiency and reduced heat generation through advanced Class-D technology.

Replacement Considerations

The TPA3116D2DAD is a pin-compatible alternative within the same family, differing primarily in packaging style. Designers should verify that the specific package variant meets the thermal and mechanical constraints of the target PCB layout before substituting.