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Need help for designing comparator

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cuteprincy

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Comparator

Can anyone please tell me how to design this track and latch comparator... i mean how to find the transistor sizes..



I tried to design that in cadence..but couldn't work.. please have a look at this

 

Re: Comparator

The cross-coupled transistors TP3,TP4 & TN3,TN4 should be slightly (a few %) wider than their parallel acting counterparts TP5,TP6 & TN5,TN6 *). In your (not easily legible) Cadence layout plot it seems the other way round (at least for the upper transistors).

*) see e.g. Hans Camenzind's online book (loadable via the link given in FvM's answer from 05 Apr 2010 10:17 in **broken link removed**), Fig. 11-19, page 11-14.
 
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