Re: Signal conditioning chips
"It is extremely unlikely that power is available on any pads they are soldiered to."
There is this thing called phantom power. You use the data signal for power. I know this sort of thing was being done in the early '90s, the company I was working for did it for MIDI devices. Could suck enough juice from the MIDI signal lines to power the microcontroller and the rest of the circuitry, no need to plug in a wall wart.