Apr 10, 2008 #1 AdvaRes Advanced Member level 4 Joined Feb 14, 2008 Messages 1,163 Helped 113 Reputation 220 Reaction score 51 Trophy points 1,328 Location At home Activity points 7,442 Hi members, I have a PLL and other different blocks to be clocked by this PLL. When I connect the PLL to these modules using a buffer (constructed with 2 inverters) the amplitude of the PLL signal decrease and the System is not working. Please help.
Hi members, I have a PLL and other different blocks to be clocked by this PLL. When I connect the PLL to these modules using a buffer (constructed with 2 inverters) the amplitude of the PLL signal decrease and the System is not working. Please help.
Apr 10, 2008 #2 I iwpia50s Full Member level 4 Joined Oct 31, 2007 Messages 222 Helped 27 Reputation 54 Reaction score 10 Trophy points 1,298 Activity points 2,305 Spice & Clocking Does the amplitude just decrease of completely flatline? If it just decreases then your PLL output cannot drive the load you have on it.
Spice & Clocking Does the amplitude just decrease of completely flatline? If it just decreases then your PLL output cannot drive the load you have on it.
Apr 11, 2008 #3 AdvaRes Advanced Member level 4 Joined Feb 14, 2008 Messages 1,163 Helped 113 Reputation 220 Reaction score 51 Trophy points 1,328 Location At home Activity points 7,442 Spice & Clocking What to do ?
Apr 11, 2008 #4 I iwpia50s Full Member level 4 Joined Oct 31, 2007 Messages 222 Helped 27 Reputation 54 Reaction score 10 Trophy points 1,298 Activity points 2,305 Spice & Clocking You need to either decrease the load capacitance or increase the drive strength of the PLL driver.
Spice & Clocking You need to either decrease the load capacitance or increase the drive strength of the PLL driver.
Apr 12, 2008 #5 AdvaRes Advanced Member level 4 Joined Feb 14, 2008 Messages 1,163 Helped 113 Reputation 220 Reaction score 51 Trophy points 1,328 Location At home Activity points 7,442 Spice & Clocking Thanks for the idea, could you please elaborate ?