chang830
Full Member level 5
I have a question on the dc offset loop for high gain amplifiers(such as limiting amplifiers). we know, to reduce the mismatch effect of very high gain amolifier, a dc offset loop is always included in the design. Except the low pass RC filter, I found some of them have a buffer(such as source follower)in the loop path, while some of them have a amplifier(transconductor)stage in the loop opath.
Would anyone tell me why a buffer, amp stage included in the lop path? In what conditions, a buffer, amp stage or none of them selected in the loop path?
Thanks
Would anyone tell me why a buffer, amp stage included in the lop path? In what conditions, a buffer, amp stage or none of them selected in the loop path?
Thanks