Post History
What are the advantages of such DC offset removal loop, compared to an RC high-pass filter? The primary advantage is that it keeps the front-end amplifier output centred in its DC operating re...
Answer
#2: Post edited
by
Andy aka
·
2023-05-03T09:32:37Z (over 1 year ago)
- > _What are the advantages of such DC offset removal loop, compared to an RC high-pass filter?_
The primary advantage is that it keeps the front-end amplifier output centred in its DC operating region. If you used an external RC filter after the front-end amplifier and, sufficient offsets developed at the front-end amplifier's input eventually, the front-end amplifier's output would saturate due to excessive offsets. This would cause AC signal degradation.- The disadvantage is clearly cost and, the possibility of instability in the front-end output (if not designed correctly).
- > _What are the advantages of such DC offset removal loop, compared to an RC high-pass filter?_
- The primary advantage is that it keeps the front-end amplifier output centred in its DC operating region. If you used an external RC filter after the front-end amplifier and, sufficient offsets developed at the front-end amplifier's input, eventually, the front-end amplifier's output would saturate due to excessive offsets. This would cause AC signal degradation.
- The disadvantage is clearly cost and, the possibility of instability in the front-end output (if not designed correctly).
#1: Initial revision
by
Andy aka
·
2023-05-03T09:32:02Z (over 1 year ago)
> _What are the advantages of such DC offset removal loop, compared to an RC high-pass filter?_ The primary advantage is that it keeps the front-end amplifier output centred in its DC operating region. If you used an external RC filter after the front-end amplifier and, sufficient offsets developed at the front-end amplifier's input eventually, the front-end amplifier's output would saturate due to excessive offsets. This would cause AC signal degradation. The disadvantage is clearly cost and, the possibility of instability in the front-end output (if not designed correctly).