[SOLVED] Comparator Analysis in cadence

[RajkumarS]

how to calculate bandwidth and hystersis of the comparator

 

[amayilsamy]

Above details not enough for give a solution for your problem.

Are you asking schmitt trigger circuit?

 

[RajkumarS]

HI amayilsamy

I am asking about hysteresis of comparator, can we calculate similar to schmitt trigger

another question is bandwidth of comparator

Thanks
Rajkumar S

 

[dick_freebird]

A hysteretic comparator will be difficult to get any good
unity gain bandwidth for. You can't put and keep it linear.

To measure hysteresis use a sine or triangle wave and
take the input and output cross() time -> voltage values,
and subtract lower trip-voltage from upper. Use a period
that is >> prop delay.

 

[BigBoss]

Comparators are analysed in term of "slew rate" instead of bandwidth.In order to do this, a transient simulation can be done.
Hysteresis is easy.. Apply a sine-wave and check the zero crossing time points when the signal drops down from threshold level.The difference between two points will give you hysteresis.