I put red box where I want to use an analog switch.
Any idea?
Any idea?
Attachments
-
16.6 KB Views: 27
Here's a couple of interesting switched gain configurations where the switch resistance has no significant effect on the gain since little current (only the op amp input bias current) goes through the switch (as long as only one switch is closed at a time)........................
If you are using this to switch the gain of your circuit, note the "on" resistance of the switch and take this into account.