• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 98 subscribers
  • Views 132 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AM623: VDDA_1P8_OLDI0 when OLDI0 is unused

John Booth64
Prodigy 130 points
Part Number: AM623

The AM623 clearly notes in table 6-74 connectivity requirements that the OLDI0 pins should be left unconnected when unused, but it doesn't offer any guidance for VDDA_1P8_OLDI0.

Can VDDA_1P8_OLDI0 be left unconnected  when unused?

At a minimum can the requirement for filtering the power supply be removed so that the pin can be tied directly to an existing supply?

Regards,

John

  • 0
    TI__Guru**** 188979 points

    Hello John, 

    Thank you for the query.

    John Booth64 said:
    Can VDDA_1P8_OLDI0 be left unconnected  when unused?

    It is recommended to connect the recommended supplies as per the data sheet.

    At a minimum can the requirement for filtering the power supply be removed so that the pin can be tied directly to an existing supply?

    Don't see this as a concern. It is recommended to place a 0.1 uF decap near to the OLDI supply pin.

    Regards,

    Sreenivasa