TPA3251D2 is a high-performance class D power amplifier. The device can drive up to two 175W /4Ω loads and two 220W /3Ω loads, and has a 2 VRMS analog input interface that supports seamless connection with high-performance DACs (for example, TI's PCM5242). In addition to excellent audio performance, TPA3251D2 also has two major advantages: high power efficiency and ultra-low power level idle loss (below 1W). This can be achieved by using 60mΩ MOSFETs and an optimized gate driver solution, which can significantly reduce idle losses compared to traditional discrete implementations.
Total output power when total harmonic distortion + noise (THD+N) is 10%
220W/39, Bridge Tied Load (BTL) stereo configuration
350W/29, Parallel Bridged Load (PBTL) mono configuration
Total output power when THD+N is 1%
140W/49, BT stereo configuration
175W/3g, BT stereo configuration
285W/29, PBTL mono configuration
Adopt advanced integrated feedback design with high-speed gate driver error correction function
(PurePath Ultra HD)
Single broadband up to 100kHz for high-frequency components of high-definition (HD) sources
Ultra-low THD+N: 0.005% at 1W/40, <0.01% at clipping
60dB Power Supply Rejection Ratio (PSRR) (BTL, no input signal
60∨(A-weighted) output noise
111dB (A weighted) signal-to-noise ratio (SNR)