what is the value of nonoverlapping time

[tia_design]

In switched cap circuit design. like sigma delta modulator, there is always some nonoverlapping clock generator. What is the typical nonoverlapping time value. 1ns, 5ns or 10ns? thanks!

 

[renwl]

it depends on your choice.
more nonoverlapping time means less time for the switch capacitor circuit to settle.

 

[safwatonline]

depends on ur clock period!!

 

[hannerfherder]

I assume you are referring to a switched capacitor filter or a sigma delta circuit.

A rule of thumb is for the non-overlap time to be at least three times the rise time or the fall time (whichever is longer) of your buffer/inverter that you are using to drive the switches.