LM358 saturates the output

Using Arduino General Electronics
23

TomGeorge:
Hi,
Can you change the values I have highlighted, and recalculate the 75K to give the gain you need with 4K7 or 10K input resistors.

IMG_5996 (2)edit.jpg
IMG_5996 (2)edit.jpg480×640 65.2 KB

Place a 1uF cap from the junction of the two 10K providing the 1/2 Vcc, to gnd.
10uF is too high for the high values of resistors you are using.

Tom... :slight_smile:

Hi Tom
At this point I have a BW of 1-20KHz which is kind of important. Will this not change if I change the caps into 1UF?

Also If I change the 50K into 10K each will it not adversely affect the channel separation?

Thanks