SLASEG6B May 2018 – June 2020 TAS3251
The device requires three power supplies for proper operation. A 3.3 V rail for the low voltage circuitry and DAC, a 12 V rail for the amplifier gate-drive, and PVDD which is required to provide power to the output stage of the audio amplifier. The operating range for these supplies is shown in the Recommended Operating Conditions. TI recommends waiting 100 ms to 240 ms for the DVDD power supplies to stabilize before starting I2C communication and providing stable I2S clock before enabling the device outputs.