Texas Instruments' TPA3250 device 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. With a 32 V power supply the device can drive up to 2 W x 130 W peak into a 4 Ω load and 2 W x 70 W continuous into an 8 Ω load and features a 2 VRMS analog input interface that works seamlessly with high-performance DACs such as TI’s PCM5242. In addition to excellent audio performance, the TPA3250 achieves both high power efficiency and very-low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.
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- Differential analog inputs
- Total output power at 10%THD+N
- 70 W stereo continuous into 8 Ω in BTL configuration at 32 V
- 130 W stereo peak into 4 Ω in BTL configuration at 32 V
- Total output power at 1%THD+N
- 60 W stereo continuous into 8 Ω in BTL configuration at 32 V
- 105 W stereo peak into 4 Ω in BTL configuration at 32 V
- Multiple configurations possible:
- Stereo, mono, 2.1, and 4xSE
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- 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
- 60 dB PSRR (BTL, no input signal)
- <60 µV (A weighted) output noise
- >110 dB (A weighted) SNR
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Texas Instruments' TPA3250 device 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. With a 32 V power supply the device can drive up to 2 W x 130 W peak into a 4 Ω load and 2 W x 70 W continuous into an 8 Ω load and features a 2 VRMS analog input interface that works seamlessly with high-performance DACs such as TI’s PCM5242. In addition to excellent audio performance, the TPA3250 achieves both high power efficiency and very-low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.
