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LTC366a Spread Spectrum Clock input and Frequency Setting

Question asked by LitheLycanthrope on Jul 5, 2018

Hi,

 

LTC3633a has provision for feeding in an external clock (MODE/SYNC pin), and also a pin to set a fixed frequency clock with a set resistor (RT pin). I would like to feed in a spread spectrum clock to the MODE/SYNC pin to try to spread noise out over a greater frequency range and I would like to know what should be done with the RT pin in this case as I cannot tell from the datasheet (attached)

 

Please advise in this regard, or if I have missed something in the datasheet please let me know. 

 

Thanks!

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