Texas Instruments TPA3116D2DAD Stereo Class-D Audio Amplifier 50W HTSSOP-32

The Texas Instruments TPA3116D2DAD Stereo Class-D Audio Amplifier delivers 2×50W into a 4Ω BTL load at 21V in a compact 32-pin HTSSOP package.

Part of the TPA31xxD2 series, this digital audio power amplifier is engineered for efficiency and is suitable for driving speakers up to 100W in mono configuration. An integrated oscillator and PLL circuit provides multiple switching frequency options to minimise AM interference, supporting clean audio output. Host or server synchronisation also allows multiple devices to operate together in step. The device weighs 17.01 g, with listed dimensions of 3.3 (width), 1.5 (depth) and 4.3 (height).

Key Features

• Efficient Class-D operation with high power efficiency, reducing heat generation and supporting extended battery life in portable applications
• Operating voltage range from 4.5V to 26V for flexible power supply designs
• Feedback power-stage architecture delivering high PSRR for improved audio fidelity
• Programmable power limit to match specific speaker and application needs
• Stereo (BTL) and mono (PBTL) modes, including a single-filter mono setup
• Single power supply design to simplify design and reduce component count
• Protection against overvoltage, undervoltage, overtemperature, DC detect and short-circuit, with error reporting
• Ambient operating temperature rating from –40°C to 85°C
• Compact 32-pin HTSSOP package for space-constrained designs

Applications

Suitable for modern audio applications, portable designs, space-constrained designs, and mono speaker systems up to 100W.

Handling Note

This IC is sensitive to electrostatic discharge (ESD). Appropriate handling precautions are essential to prevent damage.

Combining high power, efficiency and comprehensive protection in a compact package, the TPA3116D2DAD is a versatile solution for modern audio applications.