https://devzone.nordicsemi.com/f/nordic-q-a/126791/tcxo-instead-of-crystalCan i clock the nrf5340 from tcxo instead of using a crystal ?en-USTelligent Community 13Tue, 03 Feb 2026 13:18:51 GMThttps://devzone.nordicsemi.com/thread/560231?ContentTypeID=1Tue, 03 Feb 2026 13:18:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3974df02-366e-4006-901b-f7a7e326839aSwRa<p>Hello,</p> <p>Yes, you can use a Tcxo instead of the crystal, <span>but not if it&#39;s a &quot;programmable&quot; oscillator i.e PLL based, since those have too much phase noise. So make sure that your txco is not PLL-based (programmable).&nbsp;</span></p> <p><span>Regards,</span></p> <p><span>Swathy</span></p><div style="clear:both;"></div>