Other Parts Discussed in Thread: PCM5102A
Dear Support team,
My customer will use PCM5101A in their AVR application.
They are in trouble with the peak noise appearing at 48 kHz and 96 kHz.
AVDD = CPVDD = DVDD = 3.3 V, fs = 48 kHz, no audio data input
* RED Line : PCM5101A No SCK input (PLL operation)
* BLUE Line : PCM5101A With SCK input (PLL stop)
In Figure 11 on the PCM5101A data sheet, PLL is stopped by inputting SCK = 512 fs.
We do not have PCM5101A Evaluation Module. (PCM5101EVM-U)
In normal operation I think that there is no peak noise at 48 kHz and 96 kHz by 8 times oversampling.
Is there an "FFT plot using a 1-kHz tone (–60dBFS) from DC to 300 kHz" measured under the condition without SCK input (SCK = GND), fs = 48 kHz, BCK = 64 fs?
If measurement data of this condition does not exist, can you measure it?
Best Regards,
Hiroaki Masumoto