Voltage reference with bipolar power supplies

[Labaris]

Hi!

I'm working on a design that will use a bipolar power supply. I'm going to reuse a preamp design I originally made to use as a pedal.

My question is, the original VCC, GND and VREF (VCC/2) correspond to which nets in the bipolar-PS version? My guess is:
VCC is +VCC, GND is GND (only now it is half of the supply voltage), but I have no clue about VREF (and I might be wrong about the other two).

Power supply output:


Example of the pedal version of a circuit:


Thanks!

[Rob Strand]

The easiest way I can phrase it is:

- opamp +rail:         was +V   now +V
- opamp -rail:          was gnd  now -V
- everything else:    was Vref   now gnd
                             was gnd    now gnd

This is an over simplification but tends to be "the algorithm" for audio circuits.

[antonis]

What Rob said..

[Labaris]

The easiest way I can phrase it is:

- opamp +rail:         was +V   now +V
- opamp -rail:          was gnd  now -V
- everything else:    was Vref   now gnd
                             was gnd    now gnd

This is an over simplification but tends to be "the algorithm" for audio circuits.

Thanks!