I'm searching for the most cost effective way to supply +/-12V for 12 TL084 op amps. Reading in the datasheet, it seems they have a typical current output (with load) of about 20mA. So, 12 * 20 = 240mA. Assuming that is correct, I only need about 300mA of current draw from the +/-12V supply.
Here are the solutions I've come across:
- Recom Power - RS6-0512D: This modules takes in 5V and provides +/-12V output. Pretty straight forward but a bit pricy, around 21$CAD.
- Using 1 TC1044S charge pump per 2 op amps and an external 5V to 12V boost converter for the whole deal. Total cost: 1.45$CAD (TC1044) * 6 = 8,70$. Add around 4$ for the 5V to 12V converter = 12,70$CAD for the whole thing.
Any simple solution I haven't thought of? Are these 2 solutions a standard way to power a bunch of signal processing op-amps? Is it a problem even worth solving with a chip or should I go down the road of implementing this myself? Is there even any advantages to implement this myself?