Overview
The TPA3251D2DDVR is a high-performance class-D power amplifier produced by Texas Instruments. This device is designed to deliver true premium sound quality with the efficiency of class-D technology. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction known as PurePath™ Ultra-HD, which ensures ultra-low distortion across the audio band and superior audio quality.
The amplifier can drive up to 2 x 175 W into 4-Ω loads and 2 x 220 W into 3-Ω loads, and it supports multiple configurations including stereo, mono, 2.1, and 4xSE. It also boasts high power efficiency and very low power stage idle losses below 1 W, achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme.
Key Specifications
| Parameter | Value |
|---|---|
| Total Output Power at 10%THD+N | 175 W Stereo into 4 Ω in BTL Configuration, 220 W Stereo into 3 Ω in BTL Configuration, 350 W Mono into 2 Ω in PBTL Configuration |
| Total Output Power at 1%THD+N | 140 W Stereo into 4 Ω in BTL Configuration, 175 W Stereo into 3 Ω in BTL Configuration, 285 W Mono into 2 Ω in PBTL Configuration |
| Supply Voltage | 12 V to 36 V |
| THD+N | 0.005% at 1 W into 4 Ω, <0.01% to Clipping |
| PSRR (BTL, No Input Signal) | 60 dB |
| Output Noise (A-Weighted) | <60 µV |
| SNR (A Weighted) | >111 dB |
| Signal Bandwidth | Up to 100 kHz for High Frequency Content From HD Sources |
| Efficiency | 90% Efficient Class-D Operation (4 Ω) |
| Protection Features | Undervoltage, Overtemperature, Clipping, and Short Circuit Protection with Error Reporting |
Key Features
- Differential Analog Inputs
- Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction (PurePath™ Ultra-HD)
- Ultra Low Distortion: 0.005% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
- High Signal Bandwidth: Up to 100 kHz for High Frequency Content From HD Sources
- Multiple Configurations Possible: Stereo, Mono, 2.1, and 4xSE
- Click and Pop Free Startup and Stop
- Wide 12-V to 36-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 Disk™/DVD Receivers
- High End Home Theater in a Box (HTiB) Systems
- AV Receivers
- High End Soundbars
- Mini Combo Systems
- Active Speakers and Subwoofers
Q & A
- What is the maximum output power of the TPA3251D2DDVR in stereo configuration?
The TPA3251D2DDVR can deliver up to 2 x 175 W into 4-Ω loads and 2 x 220 W into 3-Ω loads in stereo configuration.
- What is the supply voltage range for the TPA3251D2DDVR?
The supply voltage range is from 12 V to 36 V.
- What is the THD+N at 1 W into 4 Ω for the TPA3251D2DDVR?
The THD+N at 1 W into 4 Ω is 0.005%.
- Does the TPA3251D2DDVR have built-in protection features?
- What is the signal bandwidth of the TPA3251D2DDVR?
The signal bandwidth is up to 100 kHz for high frequency content from HD sources.
- Is the TPA3251D2DDVR EMI compliant?
- What are the possible configurations for the TPA3251D2DDVR?
The device supports stereo, mono, 2.1, and 4xSE configurations.
- How efficient is the TPA3251D2DDVR in class-D operation?
- Does the TPA3251D2DDVR have click and pop free startup and stop?
- What type of inputs does the TPA3251D2DDVR support?
