LAUNCHXL-F28379D Rev1.2: Layout error causing signal contention on ADC channels

Hello E2E community, 

TI recently discovered an issue with the LAUNCHXL-F28379D LaunchPad. This issue affects all LaunchPads marked VER: 1.1 and impacts the ability to utilize all of the available ADC channels.

 

The affected LaunchPads has ADCINA2 shorted to VREFHIB. This error was caused by a via intersecting a trace. It is recommended that users avoid using ADCINA2. 

Additionally, manufacturing tolerance variation may cause a short between U1.VIN+ and ADCINB4 or ADCINC4. No issues have been reported on actual hardware, but it is worth noting in case odd behavior is observed.

ADCINA2/VREFHIB contention:

U1.VIN+/ADCINB4/ADCINC4 contention:

  

These errors will be corrected in a future revision of the LaunchPad. Also, additional modifications to the board design will provide a more flexible evaluation platform for the user. We apologize for any inconvenience this may have caused.  Thank you for evaluating our TMS320F28379D MCU!

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