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CMOS-LVDS-Driver and source follower

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cmos source follower

Hi,

I'm tending to like the idea to use two nmos-source followers in the a n LVDS-driver circuit instead of the upper current source and the two pmos-switches. Like that it would be also possible to get rid of the 100ohm impedance on the driver side - because the source followers impedance could be adequately sized to 40 to 140 ohm - as requested in the LVDS-spec. What do you think about this approach - any experience with implening a driver like that ?
 

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