CMOS Crystal Oscillator/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorIntroduction I&#39;m currently looking at doing some digital audio stuff with an FPGA. Ideally, I need to be working with a clock that&#39;s a multiple of one of the common audio sample rates (48kHz, 96kHz, or 192kHz). 12.288MHz would be a good choice, ...en-USTelligent Community 12RE: CMOS Crystal Oscillatorhttps://community.element14.com/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorWed, 27 Aug 2025 21:35:20 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a54c25a1-c86b-4cae-8e90-eb012a8acf5cjc20480<p>Correction: for some reason I wrote 74HC4011 in the blog and 4011 on the circuit, when what I actually used was a 74HC00. Sorry for any confusion.</p><img src="https://community.element14.com/aggbug?PostID=21934&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">RE: CMOS Crystal Oscillatorhttps://community.element14.com/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorMon, 13 Sep 2021 14:21:24 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a54c25a1-c86b-4cae-8e90-eb012a8acf5ccolporteur0<p>Enjoyed the post JC. Took a few more sips of tea for my morning brain to start processing but the understanding came through in the end. Pat on the back man.</p><img src="https://community.element14.com/aggbug?PostID=21934&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">RE: CMOS Crystal Oscillatorhttps://community.element14.com/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorSun, 12 Sep 2021 19:14:58 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a54c25a1-c86b-4cae-8e90-eb012a8acf5cphoenixcomm1<p><span>[mention:4f57fc9d538949ad9eb336ddb9469bb8:e9ed411860ed4f2ba0265705b8793d05]</span>&nbsp;&nbsp;&nbsp; nice job!&nbsp; If you want I have a bunch of xtals lying around. I will have to look for them. I would be glad to send some to you. </p><p>~~Cris</p><img src="https://community.element14.com/aggbug?PostID=21934&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">RE: CMOS Crystal Oscillatorhttps://community.element14.com/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorSun, 12 Sep 2021 18:32:07 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a54c25a1-c86b-4cae-8e90-eb012a8acf5cJan Cumps1<p>Ah, this is a scenario where the FPGA would not be able to perform the activity of the left NAND gate in the design.</p><p>It secretly uses the underlying bipolar-or-fet-based implementation of that gate.</p><img src="https://community.element14.com/aggbug?PostID=21934&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">RE: CMOS Crystal Oscillatorhttps://community.element14.com/members-area/personalblogs/b/blog/posts/cmos-crystal-oscillatorWed, 08 Sep 2021 13:44:39 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a54c25a1-c86b-4cae-8e90-eb012a8acf5crsjawale241<p>Nice design and modifications in the circuit. Also, this type of oscillator is called Pierce Crystal Oscillator.</p><img src="https://community.element14.com/aggbug?PostID=21934&AppID=293&AppType=Weblog&ContentType=0" width="1" height="1">