RE: nrf52832 WLCSP - Avoiding DC/DC via in pad

JPMorganJeremy — Fri, 06 Mar 2020 17:22:02 GMT

Thank you, I believe I will try shorting the AIN pins.

Any extra current consumption of 5uA or above is simply unacceptable for this specific design.

RE: nrf52832 WLCSP - Avoiding DC/DC via in pad

Marjeris Romero — Fri, 06 Mar 2020 14:13:49 GMT

Hi,

In the second post the customer wanted to measure the max and min DCC voltage using the respective AIN pins, which is not recommended because of the 4MHz pulse delivered by the DCC pin.

If AIN6 and AIN7 are kept disable then Andreas' answer in the first post is still valid, but the most common solution I have seen for 2 layers boards with the WLCSP package is using the internal LDO instead, as you can see from our reference design for nRF52832 CIAA which can be downloaded from the nRF52832 product page.

Best regards,

Marjeris