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.
Opamp design help
Vabzter
Your output stage has a large output resisitor , and thus you get a large DC gain. The feedback resistor is paralleled with your opamp's output resisitor, thus the output resisitor is significantly reduced and the dc gain lost much.
I don't understand why should the BW of the gain-boost opamp be smaller than the second pole(p2) of the main opamp. In my opinion if the BW of the gain-boost opamp is much larger than p2 , the doublet will be out of the closed-loop BW of the main opamp and also the gain-boost loop can be stable.
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.
