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Design >> Mixed-Signal Design >> Ideal switch with piece wise linear resistance.
https://designers-guide.org/forum/YaBB.pl?num=1139368820

Message started by venky on Feb 7^th, 2006, 7:29pm

Title: Ideal switch with piece wise linear resistance.
Post by venky on Feb 7^th, 2006, 7:29pm

Does anyone know how to build a piecewise linear switch ( A switch whose resistance varies with input voltage).
Background of the problem : In switch cap circuits typically the initial design is done with ideal switches. These
ideal switches go from ON resistance of a few ohms to OFF resistance of teraohmes(which u can set) . Such abrupt
changes in resistance causes convergence issues in spectre. If we can build a switch which changes its resistance in
linear way then simulators should not have that problem.