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S32K Crystal Transconductance (g_m_xosc) specification

Question asked by Damien Dusha on Jun 6, 2018
Latest reply on Jun 24, 2018 by Damien Dusha

Dear All,


(Note this question has been edited and simplified from the original post)


I am looking to clarify some of the crystal oscillator specifications for the S32K.


In Table 16 of the S32K datasheet, several values for g_m_xosc are specified:


I can see that the 4-8MHz vs the 8-40MHz can be selected through  SCG_SOSCCFG (p572 S32K RM), but the datasheet does not seem to provide guidance as to whether the transconductance min/max values of 16mA/V and 47mA/V refer to "low-gain" or "high-gain" operation. 


Are there differences in transconductance between these two modes?


Kind regards,