deba wrote on Jul 10th, 2017, 6:35am:The design of the switch is highly dependent on the circuit which is under consideration. Depending on the voltage which you are switching to, you have a number of switches available to you nMOS only, pMOS only, CMOS and special switches like bootstrap switches which are very common is sampling circuits.
If your problem is with charge injection, there are techniques available to handle it. Look up bottom plate sampling for example.
Hi deba!
Ya there are techniques, but I have tried some of them, to no avail.
With those techniques, There are worse charge injection if I increase the size of my switches (let's say to a few microns).
So, after many trials, i still get the best (least) charge injection when my switches is minimum size (let say 0.5um/0.5um).
So my question was simple, whether this size of switch is safe to be used for design.
Let say I want to tape-out my design, is it safe or will have problem (cannot turn on/etc) across some variations?