The recommended power-up sequence is to apply VCC first, followed by VDD, and then the digital inputs. This ensures that the internal voltage regulators are powered up correctly and reduces the risk of latch-up or damage to the device.
To minimize noise and EMI, it is recommended to keep the analog and digital signal traces separate, use a solid ground plane, and place decoupling capacitors close to the device. Additionally, use a shielded cable for the analog input signals and keep the digital signal traces away from the analog input pins.
The maximum allowed clock jitter for the PCM1725U/2K is 100 ps peak-to-peak. Exceeding this limit can result in increased distortion and decreased dynamic range.
Yes, the PCM1725U/2K can be used with a separate analog and digital power supply. However, it is essential to ensure that the analog power supply is well-regulated and has a low noise floor to avoid affecting the device's performance.
To configure the PCM1725U/2K for master clock mode, connect the MCLK pin to an external clock source, and set the M/S pin to a logic high. This will enable the internal clock generator, and the device will generate the necessary clock signals for the DAC and other internal circuits.
PCM1725U/2K datasheet
by Texas Instruments
