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TPA3116D2DADR – 50W Stereo Class D Audio Amplifier IC – Texas Instruments

Elevate your audio systems with the TPA3116D2DADR Class D amplifier IC from Texas Instruments. This high-efficiency, stereo amplifier delivers crisp 50W per channel output while minimizing heat generation and power consumption. Ideal for space-constrained designs, it integrates critical protection features and operates across a wide voltage range—perfect for professional audio equipment and consumer electronics requiring reliable performance.

Key Features

• High Power Output: 50W x 2 channels @ 4Ω load
• Wide Voltage Range: 4.5V to 26V operation
• Class D Efficiency: >90% power efficiency reduces thermal stress
• Advanced Protection: Short-circuit, thermal shutdown, and undervoltage lockout
• Control Features: Differential inputs, mute function, and shutdown mode
• Robust Packaging: 32-HTSSOP surface-mount case

Technical Details

This stereo audio amplifier utilizes Texas Instruments’ SpeakerGuard™ technology for distortion-free sound reproduction. It supports differential input signals and operates reliably across industrial temperature ranges (-40°C to +85°C). The compact 32-PowerTSSOP package (6.10mm width) enables high-density PCB layouts while maintaining excellent thermal performance. Download datasheet for complete specifications.

Typical Applications

• Home theater systems and soundbars
• Professional PA amplifiers and mixers
• Automotive infotainment systems
• Portable Bluetooth speakers
• Gaming console audio modules

About Texas Instruments

Texas Instruments (TI) is a globally recognized leader in semiconductor innovation, with over 90 years of industry expertise. Their audio amplifier portfolio sets benchmarks for power efficiency, signal integrity, and reliability across consumer and industrial markets. TI components undergo rigorous testing to ensure compliance with international quality standards, making them the preferred choice for mission-critical designs.

TI’s commitment to research and development drives continuous improvements in analog technology. Their SpeakerGuard™ series, including the TPA3116 family, incorporates patented architectures that eliminate audible artifacts while protecting speakers from damage. This engineering excellence ensures long-term system durability even in demanding environments.

About Class D Audio Amplifiers

Class D amplifiers represent the pinnacle of modern audio amplification technology, using pulse-width modulation (PWM) to achieve superior power efficiency compared to traditional Class AB designs. By rapidly switching output transistors between fully on/off states, they minimize energy loss as heat, enabling compact form factors without heatsinks. This efficiency makes them ideal for battery-powered and space-constrained applications.

Modern Class D ICs like the TPA3116D2DADR maintain high-fidelity audio reproduction through advanced feedback loops and filtering. Their ability to drive low-impedance loads (down to 4Ω) with minimal distortion supports high-volume applications from home audio to commercial installations. When paired with PCX’s guaranteed authentic components, they ensure consistent performance throughout product lifecycles.

Packaging Options

Available in industry-standard formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) for prototyping, and Digi-Reel® for flexible reel quantities. All packaging ensures ESD protection and mechanical safety during transit.

FAQs

Question: What is the efficiency rating of this amplifier?

Answer: Typical efficiency exceeds 90% at rated power, significantly reducing thermal management requirements.

Question: Does it require external heatsinks?

Answer: No—the HTSSOP package’s thermal pad efficiently dissipates heat when properly soldered to PCB copper planes.

Question: Can it drive 8Ω speakers?

Answer: Yes, though maximum power reduces to approximately 30W per channel at 8Ω.

Question: Is this IC RoHS compliant?

Answer: Yes, it meets all current RoHS 3 directives.

Question: How does SpeakerGuard™ protect my system?

Answer: It prevents speaker damage by limiting output current during overloads and clipping events.

Question: What input voltage is recommended for 50W output?

Answer: 24V supply delivers optimal performance at 4Ω loads.

Note: Product images are representational. Refer to datasheet for exact dimensions.

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