A DC coupled amplifier is sensitive to source resistance (Rs) and the output offset will change for the worse if the incorrect combination of resistances are used.
If the NFB route is also DC coupled then the low impedance of the lower leg of the NFB loop can be matched by a similar value for total Rs seen by the amp input. This total Rs includes the RF filter.
If the NFB route is also DC coupled then the low impedance of the lower leg of the NFB loop can be matched by a similar value for total Rs seen by the amp input. This total Rs includes the RF filter.
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Source & Line
- Analog Line Level
- transformer coupled output= dc block?