TPA3245 PurePath Ultra-HD Class-D Amplifier
Texas Instruments TPA3245 PurePath™ Ultra-HD Class-D Amplifier is a high-performance class-D power amplifier that enables true premium sound quality with class-D efficiency. The TPA3245 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 provides superior audio quality. The device is operated in AD-mode and can drive up to 2×115W into a 4Ω load and 2×145W into a 3Ω load. The TPS3245 also features a 2VRMS analog input interface that works seamlessly with high-performance DACs such as TI’s PCM5242. In addition to excellent audio performance, the TPA3245 achieves high power efficiency and low power stage idle losses below 0.45W. This feature is achieved through the use of 65mΩ MOSFETs and an optimized gate driver scheme. This driver scheme can achieve significantly lower idle losses than typical discrete implementations.
