The recommended power-on sequence is to apply VCC first, followed by AVCC, and then the analog power supplies (VAA and VDDA). This ensures that the internal voltage regulators are powered up correctly.
To optimize the analog input impedance, use a low-impedance source (e.g., a buffer amplifier) and keep the input cables short to minimize capacitive loading. Also, ensure that the input signal is properly terminated to prevent signal reflections.
The maximum allowed clock jitter for the PCM1808PWR is 50 ps RMS. Exceeding this limit can result in decreased converter performance and increased distortion.
Yes, the PCM1808PWR can be used in a multi-channel audio application. However, each channel requires a separate converter, and the master clock must be synchronized across all channels to ensure proper operation.
The PCM1808PWR outputs 24-bit data in I²S format. The digital output data should be captured and processed by a microcontroller or DSP, taking care to handle the data correctly to avoid errors and ensure proper audio playback.
PCM1808PWR datasheet
by Texas Instruments
