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 prevents any potential latch-up conditions.
To optimize the PCB layout, keep the analog and digital grounds separate, use a solid ground plane, and place the analog components (such as the audio capacitors) close to the PCM1771PW. Also, ensure that the digital signals are routed away from the analog signals to minimize noise coupling.
The maximum allowed clock jitter for the PCM1771PW is 50 ps RMS. Exceeding this limit can result in increased jitter in the audio output, which can affect the overall audio quality.
Yes, the PCM1771PW can be used in a multi-channel audio application. However, each channel requires a separate PCM1771PW device, and the devices must be synchronized using a common clock signal to ensure proper operation.
To troubleshoot audio quality issues, check the power supply voltage, clock signal quality, and analog output loading. Also, ensure that the digital inputs are properly formatted and that the device is configured correctly. If issues persist, consult the Texas Instruments support resources or contact a technical support engineer.
PCM1771PW datasheet
by Texas Instruments
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