in my project i have opa2277pa but i did not found it in my country i want another amplifiers work as op2277 in the input and output
please help me and give me some of amplifier work same >>>
Op-amps have a lot of parameters, and you'd probably need to check them out. **broken link removed**explains them.
You'll need to post the circuit, because without that, you don't really have a way of knowing which parameters were important for the circuit in question, which makes it hard to recommend an alternate op-amp.