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TPA3251: 175W Stereo, 350W mono ultra-HD Class-D audio amplifier

21st September 2016
Nat Bowers
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Learn more about the world's highest performing, high-power, monolithic class-D stereo amplifier, the TPA3251, and how you can use it in your designs.

Texas Instruments' TPA3251 is a high performance class-D power amplifier that enables true premium sound quality with class-D efficiency. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality.

TI TPA3251 

The device can drive up to 2 x 175W into 4Ω load and 2 x 220W into 3Ω load and features a 2VRMS analogue input interface that works seamlessly with high performance DACs such as TI’s PCM5242. In addition to excellent audio performance, TPA3251 achieves both high power efficiency and very low power stage idle losses below 1W. This is achieved through the use of 60mΩ MOSFETs and an optimised gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

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