Other Parts Discussed in Thread: LM324,
I am trying to create a small twin stereo audio pre-amplifier to correct a small level correction problem between two audio units which looks to need a gain factor of 3 to 5. I have 10v to work with and will see if a LM324 (for that high frequency limitation) or TL074-84 (for that higher frequency lift) approach would suit these units, to make this work I will need to generate a split rail and think of using a TLE2426LP to do this.
My query is about capacitor decoupling of this split rail in both directions, what values to use if any for best working?
There is of course negative generators using various methods for low level working currents but I find that its about stopping the audio circuits picking up its switching noise, or for that matter any digital chips or radio (FM as well) getting upset, my favorite method is a 4049 which I used to make an ESR tester with at 100KHz, this gives a good output voltage when used as a voltage doubler or splitter with low battery consumption (until loaded) but also great for knocking out FM radio (I know should be in a metal/screened box).
Think this might be a bit over the top though for just a small gain so return to the TLE2426LP, I am aware of its other version with a decouple pin, just wondered about its rail decoupling?
Thanks for any guidance