TPA3116D2 50W 2-Channel Class-D Stereo Audio Amplifier IC
TPA3116D2 50W 2-Channel Class-D Audio Amplifier IC
The TPA3116D2 is a high-efficiency 2-channel Class-D stereo audio amplifier IC from Texas Instruments, designed for compact and high-power audio applications. It can deliver up to 2 × 50W into 4Ω speakers at 21V under the specified conditions, making it suitable for DIY Bluetooth speakers, active speakers, desktop audio systems, portable audio projects, and other embedded sound applications.
The IC operates from a wide 4.5V to 26V power supply, allowing it to be used with common 12V, 15V, 19V and 24V DC power systems. Its Class-D architecture provides high efficiency of more than 90% under appropriate operating conditions, helping reduce power loss and heat compared with conventional linear audio amplifier designs.
TPA3116D2 supports stereo BTL and mono PBTL configurations, giving designers flexibility when developing different audio amplifier circuits. It also supports differential and single-ended audio inputs and includes integrated protection against overvoltage, undervoltage, overtemperature, DC detection and short-circuit conditions.
For Bangladeshi electronics students, engineers and DIY makers, the TPA3116D2 is a useful choice for building Arduino and Raspberry Pi audio projects, Bluetooth speakers, home audio systems, active speaker systems and custom Class-D amplifier boards.
Specifications:
| Specification | TPA3116D2 |
|---|---|
| IC Type | Class-D Audio Power Amplifier |
| Audio Channels | 2-channel Stereo |
| Maximum Output Power | 2 × 50W |
| Rated Example | 2 × 50W into 4Ω at 21V |
| Mono Capability | Up to 100W class configuration |
| Supply Voltage | 4.5V to 26V |
| Audio Input | Analog |
| Architecture | Class-D |
| Minimum Load | 4Ω |
| Efficiency | >90% |
| THD + N | 0.1% at 1kHz, specified condition |
| Switching Frequency | Up to 1.2MHz |
| Output Configuration | Stereo BTL / Mono PBTL |
| Protection | Overvoltage, undervoltage, overtemperature, DC detect, short circuit |
| Package | 32-pin HTSSOP |
| Package Size | Approximately 11 × 8.1mm |
| Operating Temperature | −40°C to +85°C |
| Manufacturer | Texas Instruments |
Specifications are based on TI's TPA3116D2 product information and datasheet.
Features:
- 2-channel Class-D stereo audio amplifier
- Up to 2 × 50W output
- Designed for 4Ω BTL speaker loads
- Wide 4.5V–26V supply range
- High-efficiency Class-D architecture
- More than 90% efficiency under specified conditions
- Analog audio input
- Stereo BTL and mono PBTL operation
- Differential and single-ended input support
- Up to 1.2MHz switching frequency
- Programmable power limiting
- Integrated thermal protection
- Short-circuit protection
- Overvoltage and undervoltage protection
- DC detection protection
- Thermally enhanced package
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