Forum Post: RE: Some clarification on the output of the DRV2665

Hi Eric,

Thanks a lot for your reply. So this means that the output voltage is dependent on the capacitance of the piezo actuator, am I correct? I obtained the info from the datasheet as attached, but it is for DRV2603 though:

My power electronics theory is a bit rusty, you see. The capacitance of the actuator is 1150nF though. So how do I go around this? Do I add capacitance in series to tune the capacitance down to 330nF? 

Thanks a lot for your input.