type of output class
I was said some opamp used class AB buffer type.
or some audio amplifier used class D buffer.
I want to know what is the class A, AB, D and etc. but I didn't see anything that was related with it in the razavi textbook.
what is the difference class A and class AB, D and etc ?
How many type buffer are used in today?
and what is the strength and weakness about each buffer class type?
How can I know them in detail? (Is there any reference or technical paper?)
thanks.