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Associate III
December 17, 2025
Question

STM32WLE5 Errata issue-"TX spurs around carrier at a multiple of HSE clock frequency"

  • December 17, 2025
  • 0 replies
  • 375 views

Hi ,

we are using LORA , 22 dBm , 3.3V system , TX and RX path are connected via RF SWITCH on Board . 

we see minor Sensitivity Degradation  of 1-2 dB only around the  HSE 32 Mhz clock multiple. ( Sensitivity of the stm32wle5 receiver path )

I have several questions regarding this Errata issue:

1. Does the SPUR issue happen only in TX Mode or also in RX mode of the stm32wle5 ?

2. If it relates also to RX mode - cause this spur be the cause of the sensitivity degradation of the stm32wle5 ?

 

Thank you,

Viola