>>2863945
2 batteries make +3v and 2 batteries make -3v.

Charge pump/switched capacitor converter.

Inverting buck boost converter.

Post-regulate with an LDO as necessary to meet desired noise target.

I'm using rechargable so only 2.4v and that's not enough

>>2863945
macro reps yt for your muchly desired ppms and low noise performance you lazy homo also this
>>2863949

>>2863950
Add more batteres.
You just said “not enough” instead of “X volts” which would have been easier so I assume you’re embarrassed at >>2863949’s answer of
> 2 batteries make +3v and 2 batteries make -3v.
if too low add two more batteries.
If not enough room, use AAAs.
…or go down to the dollar store and get some zinc carbon cells for $1.25.