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Si5351A CLK0 Output Buffer

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WA1EDJ All Messages By This Member #20803 I'm using ProgRock for the RX module LO.? CLK0 drives the RX.? I added an SMA to the CLK0 pads on the 5351 module for use as an LO monitor port.?It drives an SMA on the back panel of my enclosure. Is there any need to isolate the 5351 CLK0 output?? The load on CLK0 is the input to an HP freq counter.? High impedance.? I did not detect any freq shift on the RX when I i connected the freq counter. Bob WA1EDJ
Hans Summers All Messages By This Member #20812 Hi Bob When using ProgRock for the RX module you do not need to isolate the Clk0 output or provide any buffering.? For some uses of the Si5351A, you may need to provide buffering/isolation. It all depends what you are going to drive with the Si5351A's output.? 73 Hans G0UPL toggle quoted message Show quoted text On Mon, Jan 15, 2018 at 3:42 AM, Bob <bobc784@...> wrote: I'm using ProgRock for the RX module LO.? CLK0 drives the RX.? I added an SMA to the CLK0 pads on the 5351 module for use as an LO monitor port.?It drives an SMA on the back panel of my enclosure. Is there any need to isolate the 5351 CLK0 output?? The load on CLK0 is the input to an HP freq counter.? High impedance.? I did not detect any freq shift on the RX when I i connected the freq counter. Bob WA1EDJ

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