The TAS5631B is a high-performance PWM input class-D amplifier with integrated closed-loop feedback technology (known as PurePath HD technology) with the ability to drive up to 300 W (1) stereo into 4-Ω to 8-Ω speakers from a single 50-V supply.
PurePath HD technology enables traditional AB-amplifier performance (<0.03% THD) levels while providing the power efficiency of traditional class-D amplifiers.
Unlike traditional class-D amplifiers, the distortion curve does not increase until the output levels move into clipping.
PurePath HD technology enables lower idle losses, making the device even more efficient.
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| Audio input type | PWM |
| Architecture | Class-D |
| Speaker channels (max) | 4 |
| Rating | Catalog |
| Power stage supply (max) (V) | 52.5 |
| Power stage supply (min) (V) | 25 |
| Load (min) (Ω) | 4 |
| Output power (W) | 300 |
| SNR (dB) | 103 |
| THD + N at 1 kHz (%) | 0.03 |
| Iq (typ) (mA) | 24.8 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (min) (V) | 10.8 |
| Analog supply voltage (max) (V) | 13.2 |
| PSRR (dB) | 80 |
| Operating temperature range (°C) | 0 to 70 |
| HTQFP (PHD) | 64 | 256 mm² 16 x 16 |