I recently found out that even having a gain of 20 (26dB), the LM386 amplifier will have problems of distortion due to clipping. The amplifier project is on the "Projects Collection" section, here: http://forum.allaboutcircuits.com/showthread.php?t=6204
Is there a way of having a gain below 20? I heard rumors that are other way of setting the gain o this amplifier, but I don't know exacly how it is made. Just for reference, you can see the datasheet here: http://cache.national.com/ds/LM/LM386.pdf.It might be handy to see the schematic. I didn't figured out where are the positive and negative input inside this chip, since the negative input outside doesn't seem to be a true input.
Is there a way of having a gain below 20? I heard rumors that are other way of setting the gain o this amplifier, but I don't know exacly how it is made. Just for reference, you can see the datasheet here: http://cache.national.com/ds/LM/LM386.pdf.It might be handy to see the schematic. I didn't figured out where are the positive and negative input inside this chip, since the negative input outside doesn't seem to be a true input.