Kinetis Microcontrollers中的主题 VREFH and VREFL connections for K60 when not using ADC https://community.nxp.com/t5/Kinetis-Microcontrollers/VREFH-and-VREFL-connections-for-K60-when-not-using-ADC/m-p/298388#M12349 <HTML><HEAD></HEAD><BODY><P>I am trying to determine if I can tie my VREFH and VREFL lines directly to digital ground if I am not using the ADC of the K60.&nbsp; I of course would keep VDDA connected to VDD, and put a decoupling cap on VREF_OUT, but wondering if I need to decouple VREFH and VREFL if I am not using them.</P></BODY></HTML> Tue, 18 Mar 2014 14:28:09 GMT tommyb 2014-03-18T14:28:09Z VREFH and VREFL connections for K60 when not using ADC https://community.nxp.com/t5/Kinetis-Microcontrollers/VREFH-and-VREFL-connections-for-K60-when-not-using-ADC/m-p/298388#M12349 <HTML><HEAD></HEAD><BODY><P>I am trying to determine if I can tie my VREFH and VREFL lines directly to digital ground if I am not using the ADC of the K60.&nbsp; I of course would keep VDDA connected to VDD, and put a decoupling cap on VREF_OUT, but wondering if I need to decouple VREFH and VREFL if I am not using them.</P></BODY></HTML> Tue, 18 Mar 2014 14:28:09 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/VREFH-and-VREFL-connections-for-K60-when-not-using-ADC/m-p/298388#M12349 tommyb 2014-03-18T14:28:09Z Re: VREFH and VREFL connections for K60 when not using ADC https://community.nxp.com/t5/Kinetis-Microcontrollers/VREFH-and-VREFL-connections-for-K60-when-not-using-ADC/m-p/298389#M12350 <HTML><HEAD></HEAD><BODY><P>Hello Tommy:</P><P></P><P>The recommendation is to connect VREFH to VDD and VREFL to GND. This helps with the noise immunity.</P><P><BR />Regards!<BR />Jorge Gonzalez</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 19 Mar 2014 04:39:14 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/VREFH-and-VREFL-connections-for-K60-when-not-using-ADC/m-p/298389#M12350 Jorge_Gonzalez 2014-03-19T04:39:14Z