I am now designing a ADC with a front end SHA, but my opamp 's GBW is really limited , especially in case of unit gain , my SHA structure is one capacitor sharing sampling and holding , so there is a huge settling time,anyway to improve the opamp settling ? Thanks
improve setting setting time(decreasing setting period) by maintaing the circuit in the critical rather than in either underdamping or overdamping.
for that we need to insert resistance and capacitance compensatin with increasing Resistance value and decresing the capacitance
so that we improve the setting time of opamp design