Overview
The TPA3116D2DAD is a high-efficiency, Class-D audio amplifier IC from Texas Instruments. It is part of the TPA31xxD2 series, designed for driving speakers up to 100 W / 2 Ω in mono configuration. This amplifier is known for its multi-function, high power, and high fidelity capabilities, making it suitable for compact audio systems. The TPA3116D2 can deliver 2 × 50 W into a 4-Ω BTL load at 21 V, with the option to use a small heat sink for higher power output. It shares the same footprint with other devices in the series, allowing a single PCB design to be used across different power levels.
Key Specifications
| Parameter | Value |
|---|---|
| Package | HTSSOP (DAD) - 32 pins |
| Operating Temperature Range | -40°C to 85°C |
| Output Power | 2 × 50 W into a 4-Ω BTL load at 21 V |
| Voltage Range | 4.5 V to 26 V |
| Switching Frequency | Up to 1.2 MHz |
| Power Efficiency | >90% combined with low idle loss |
| Input Types | Differential and Single-Ended Inputs |
| Protection Features | Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit with Error Reporting |
Key Features
- Supports multiple output configurations: 2 × 50 W into a 4-Ω BTL load at 21 V, 2 × 30 W into an 8-Ω BTL load at 24 V, and 2 × 15 W into an 8-Ω BTL load at 15 V.
- Wide voltage range: 4.5 V to 26 V.
- Efficient Class-D operation with >90% power efficiency and low idle loss, reducing heat sink size.
- Advanced modulation schemes and multiple switching frequencies.
- AM avoidance and master and slave synchronization options.
- Feedback power-stage architecture with high PSRR, reducing PSU requirements.
- Programmable power limit and single power supply reducing component count.
- Stereo and mono mode with single-filter mono configuration.
- Integrated self-protection circuits including overvoltage, undervoltage, overtemperature, DC-detect, and short circuit with error reporting.
- Thermally enhanced packages (DAD and DAP).
Applications
- Mini-micro component systems.
- Speaker bars and docks.
- After-market automotive audio systems.
- CRT TVs.
- Consumer audio applications.
Q & A
- What is the maximum output power of the TPA3116D2?
The TPA3116D2 can deliver up to 2 × 50 W into a 4-Ω BTL load at 21 V.
- What is the operating temperature range of the TPA3116D2?
The operating temperature range is -40°C to 85°C.
- What types of inputs does the TPA3116D2 support?
The TPA3116D2 supports both differential and single-ended inputs.
- Does the TPA3116D2 have built-in protection features?
Yes, it includes overvoltage, undervoltage, overtemperature, DC-detect, and short circuit protection with error reporting.
- What is the switching frequency range of the TPA3116D2?
The switching frequency can go up to 1.2 MHz.
- Can the TPA3116D2 operate in both stereo and mono modes?
Yes, it supports both stereo and mono modes with a single-filter mono configuration.
- What is the power efficiency of the TPA3116D2?
The power efficiency is greater than 90%, combined with low idle loss.
- Does the TPA3116D2 have AM avoidance features?
Yes, it includes AM avoidance features through multiple switching frequencies and master/slave synchronization.
- What types of packages are available for the TPA3116D2?
The TPA3116D2 is available in HTSSOP (DAD and DAP) packages with 32 pins.
- Can multiple TPA3116D2 devices be synchronized?
Yes, multiple devices can be synchronized using the master and slave options.
