Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
i wanna design a comparator with positive feedback, but i have no clear concept about positive feedback in OP amp, you may give me some good ideas?thank you
Re: how to judge positive feedback or negative feedback for
in common sense,if you want to design a high speed comparator,one or two stages of preamplification followed by a track-and-latch stage is the most familiar architecure.the preamplification is always a simple OTA.the track-and-latch stage can give a high speed with moderate gain.so i can't understand your problem,if you want to use the AMP as the comparator,then speed always be slow if you want to get a high resolution.so what the meaning of "a comparator with positive feedback"? ps:ken matin's book(analog circuit design),chapter 7 will gives you some help.
ithink said:
i wanna design a comparator with positive feedback, but i have no clear concept about positive feedback in OP amp, you may give me some good ideas?thank you
You can inject one signal in the feedback loop (break point) ,If the output signal phase is the same as input , this system is in positive feedback.
..
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
