I have a general question: I want to buidl an analog PI(proportion and integration) regulator implemented with high-speed high-slew rate op amps. Current feedback op amp and voltage feedback op amp, are they both suitable for such applications. I ask this question because no op amp's datasheet introduces the applications in analog PI regulator. Furthermore, are there any disciplines for choosing PI parameter relevant resistors and capacitors? For example, in CFB's datasheet, the feedback resistors for various gains are always listed for reference. But, no disciplines are given for choosing the right PI parameter relevant resistors and capactiors.