avinash
Full Member level 3
how to start design of an opamp if settling time spec is given inspite of slew rate.
because as for two stage or folded cascode opamp we start designing with slew rate and compensation/load capacitance to select the tail current.
since the settling time is total time of slewing and linear settling we cannot write
SR=(vdd+vss)/ts
ts---settling time
so how to use the spec of settling time in design of an opamp.
moreover if settling time spec is 1ns,which opamp stucture should be chosen.
thanks in advance.
because as for two stage or folded cascode opamp we start designing with slew rate and compensation/load capacitance to select the tail current.
since the settling time is total time of slewing and linear settling we cannot write
SR=(vdd+vss)/ts
ts---settling time
so how to use the spec of settling time in design of an opamp.
moreover if settling time spec is 1ns,which opamp stucture should be chosen.
thanks in advance.
