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Design >> RF Design >> CML IQ div/2 circuit problem?
https://designers-guide.org/forum/YaBB.pl?num=1242865221

Message started by hotraymanf on May 20^th, 2009, 5:20pm

Title: CML IQ div/2 circuit problem?
Post by hotraymanf on May 20^th, 2009, 5:20pm

:)I looked at out previous designed CML div/2 circuit. The sense amp and regenerative pair use the same W/L. I really don't understand this sizing.
Besides, from the point of view of large signal working principle, the regenerative pair need to have gm*R greater than 1 in order for it to be latch, however, from the point of view of small signal self-oscillation freq, then the amplifier just have a negative total load resistance which does not seen to very intuitive.
Thanks in advance for any kindly help!

Title: Re: CML IQ div/2 circuit problem?
Post by loose-electron on May 23^rd, 2009, 2:26pm

more specifics please, and a schematic