Our customer selected NX2016SA（48MHz ,CL=7pF, ESR＝80 ohm ) and they’re developing their module currently. Customer shared their module with crystal maker and they were requesting them to check if there were any problems or not. According to crystal maker’s comments, for Negative resistance (RN) parameter, they mentioned it did not meet this crystal’s requirement. This means, crystal maker mentioned, it seems that the negative resistance is recommended to be 300ohm or more when using this crystal. Therefore, customer is asking any advice/comments on this behavior to TI, and then, customer would like to know TI's recommended crystal parts name. Can I have any advice/comments on this, please ?
First of all, I shared the following documents.
“Crystal Oscillator and Crystal Selection for the CC26xx and CC13xx Wireless MCUs” ( https://www.ti.com/lit/pdf/swra495 )
I really appreciate your help.