Hi,
I need to add simple amplifier to my digital system which is powered from a single 5V battery. To achieve proper operation of the operational amplifier I need at least
+8V and -8V voltages. I can build a simple voltage multiplier and inverter like shown here:However antoher idea is to use something cheap and standard like MAX232. Has anybody tried to use this chip just as a voltage converter? Unfortunately I can't find the output characteristics for V+ and V- pins. Maybe I'll need also additional voltage regulator to improve the quality of this power supply voltage (or maybe simple RC filter will be sufficient...).
Has anybody tried to do it?