Overview
The TPA3245DDV from Texas Instruments is a high-performance class-D power amplifier designed to deliver premium sound quality with high efficiency. This amplifier features an advanced integrated feedback design and proprietary high-speed gate driver error correction known as PurePath™ Ultra-HD. This technology ensures ultra-low distortion across the audio band, resulting in superior audio quality. The device operates in AD-mode and can drive up to 2 x 115 W into 4-Ω loads and 2 x 145 W into 3-Ω loads. It also includes a 2 VRMS analog input interface that works seamlessly with high-performance DACs like TI's PCM5242. The TPA3245 achieves high power efficiency and very low power stage idle losses below 0.45 W, making it an ideal choice for various audio applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | HTSSOP (DDV) | - |
| Pins | 44 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage Range | 12 to 31.5 | V |
| Total Output Power at 10% THD+N | 115 W (Stereo into 4 Ω in BTL), 145 W (Stereo into 3 Ω in BTL), 230 W (Mono into 2 Ω in PBTL) | W |
| Total Output Power at 1% THD+N | 95 W (Stereo into 4 Ω in BTL), 115 W (Stereo into 3 Ω in BTL), 185 W (Mono into 2 Ω in PBTL) | W |
| THD+N at 1 W into 4 Ω | 0.005% | % |
| PSRR (BTL, No Input Signal) | 65 dB | dB |
| Output Noise (A-Weighted) | <50 µV | µV |
| SNR (A Weighted) | >112 dB | dB |
| Efficiency (Class-D Operation at 4 Ω) | 90% | % |
Key Features
- Differential Analog Inputs
- Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction (PurePath™ Ultra-HD)
- Signal Bandwidth up to 100 kHz for High Frequency Content From HD Sources
- Ultra Low 0.005% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
- Multiple Configurations Possible: Stereo, Mono, 2.1, and 4xSE
- Click and Pop Free Startup and Stop
- Wide 12-V to 30-V Supply Voltage Operation
- Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short Circuit Protection) With Error Reporting
- EMI Compliant When Used With Recommended System Design
Applications
- Blu-Ray Disc™/ DVD Receivers
- High End TV sets
- High End Soundbar
- Mini Combo Systems
- Active Speakers and Subwoofers
Q & A
- What is the maximum output power of the TPA3245 in stereo configuration?
The TPA3245 can deliver up to 115 W into 4 Ω and 145 W into 3 Ω in stereo configuration at 10% THD+N.
- What is the supply voltage range for the TPA3245?
The supply voltage range for the TPA3245 is 12 V to 31.5 V.
- What is the THD+N at 1 W into 4 Ω for the TPA3245?
The THD+N at 1 W into 4 Ω is 0.005%.
- Does the TPA3245 support multiple configurations?
- What is the efficiency of the TPA3245 in Class-D operation at 4 Ω?
The efficiency of the TPA3245 in Class-D operation at 4 Ω is 90%.
- Does the TPA3245 have built-in protection features?
- Is the TPA3245 EMI compliant?
- What is the output noise level of the TPA3245?
- What is the signal bandwidth of the TPA3245?
- What package type is the TPA3245 available in?
