Tool/software:
I got your feedback on to implement negative capacitance using OP AMp. However, the biggest problem is on stability of your suggestion circuit. I would like to get CFOA circuit that can do LT spice simulation model to run simulation. I hope to get the negative capacitance 1000pf - 500pf for my compensation. the frequency response range from 30hz-30Mhz, phase margin > 50degree,