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TAS6424E-Q1: SNR check

Peter Xu
Expert 6000 points
Part Number: TAS6424E-Q1
Other Parts Discussed in Thread: TAS6424E

Tool/software:

Hi team,

Customer tested SNR with AP device and everything is good.

However, they tested it with multimeter and found it was about 16mV.

They cannot test every board with AP in production. They want to know if 16mV with multimeter is normal.

Regards,

Peter

  • 0
    TI__Mastermind 48800 points

    Hi Peter

    It would be mV level value when using oscilloscope to test, but no one could tell if it's correct behavior from this data. 

    Oscilloscope is not precise enough to test this performance, the final value would largely decided by their oscilloscope type, probe type, parameter settings.  Form example, at my side when test nothing but probe itself to ground, it's already around 5mV RMS, from all kinds of environment noise. And test TAS6424E output, there's additional DC offset, would have another around 5mV.