The recommended power-up sequence is to apply VCC first, followed by AVCC, and then DVCC. This ensures that the internal voltage regulators are powered up correctly.
To optimize the PCB layout, keep the analog and digital grounds separate, use a solid ground plane, and keep the analog and digital signal traces separate. Also, place the decoupling capacitors close to the device pins.
The PCM1794ADBR can support clock frequencies up to 256 fs (where fs is the sampling frequency). However, the maximum clock frequency may be limited by the specific application and system requirements.
To configure the PCM1794ADBR for master clock mode, set the MCLK pin to the desired clock frequency, and set the BCK pin to the desired bit clock frequency. Also, set the LRCK pin to the desired left-right clock frequency.
The recommended operating temperature range for the PCM1794ADBR is -40°C to 85°C. However, the device can operate up to 105°C with reduced performance and reliability.
PCM1794ADBR datasheet
by Texas Instruments
