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PCM5122 need pcb guidelines

syed hamad
Expert 1120 points
Other Parts Discussed in Thread: PCM5122, PCM5102A

Hello All,

Can you pls share any layout guidelines on PCM5122? No info about layout guidelines in datasheet or EVM user guide.

regards,

syed

  • 0
    Expert 1720 points
    Hi Syed, most important are capacitors near power pins which are described on page 16 in datasheet. About PCB layout you can inspire in PCM5102A datasheet which is very similar DAC and there are Layout guidelines in datasheet.
  • 0 in reply to Pavel Ruzicka
    TI__Mastermind 27990 points
    Hi Syed,

    As Pavel stated, placing decoupling capacitors as close to the power pins as possible will help reduce noise from the power supplies. placing zero ohm resistors in series with the high speed lines such as the clocks and data make it possible to add a resistor to reduce reflections if necessary. I would also agree with Pavel that you can take a look at eh PCM5102A data sheet for more layout information.

    Justin