bryan78 Posted September 19, 2022 Share Posted September 19, 2022 It looks like the adp3450 allows me to setup triggers as an external clock reference. Is this really allowing me to use a precision reference clock and if so, do any of the other models allow the same thing? Link to comment Share on other sites More sharing options...
0 attila Posted September 19, 2022 Share Posted September 19, 2022 Hi @bryan78 Currently only ADP3450/3250 supports reference clocking. Link to comment Share on other sites More sharing options...
0 bryan78 Posted September 19, 2022 Author Share Posted September 19, 2022 Appreciate it. Any idea if it would be better, less phase noise if I have a clock at 50MHz compared to 10MHz? Link to comment Share on other sites More sharing options...
0 attila Posted September 20, 2022 Share Posted September 20, 2022 Hi @bryan78 I don't think it matters. In the device FPGA 2 PLLs are used to generate the requested reference (output) frequency and 2 MMCMs to obtain the system frequency from the reference (input). Two of both for higher flexibility. All these try to use the highest VCO frequency to reduce the jitter. Link to comment Share on other sites More sharing options...
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bryan78
It looks like the adp3450 allows me to setup triggers as an external clock reference. Is this really allowing me to use a precision reference clock and if so, do any of the other models allow the same thing?
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