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PCM1754-Q1: The requirement of SCK input

Jiawei Hu1
Expert 5395 points
Part Number: PCM1754-Q1
Other Parts Discussed in Thread: PCM1754

Hi team,

For PCM1754 application, SCK is must need. My customer plan to use an oscillator for SCK input, what is the accuracy requirements? Thanks!

BR

Jiawei

  • 0
    TI__Mastermind 34680 points

    Hi Jiawei,

    Arash is out of office until Thursday and will answer your question then.

    Thanks for your patience,

    Jeff McPherson

  • 0 in reply to Jeff McPherson
    TI__Mastermind 24620 points

    Hello Jiawei,

    The main requirement for system clock is listed in table 7.6 (System Clock Input Timing) along with Table 1. System Clock Rates for Common Audio Sampling Frequencies.

    Datasheet indicates that for optimal performance, use a clock source with low phase-jitter and noise. TI's PLL170x family of multiclock generators is an excellent choice for providing the PCM175x-Q1 system clock. So you can use this PLL as bench mark/guidance for accuracy boundary.

    Regards,

    Arash