I'd rather amplify a sensor, since it seems I need to do this for so many projects that I have in mind.
It looks like if I use an INA122, and use a 250ohm resistor, I'll get 803.3x gain.
But it's unclear to me on a couple of pins on where it should be wired. I know that if I entirely understood the basics here I would realize it.
| INA122 |
|---|
| pin3 Vin+ = Vout+ 2SMP-02 |
| pin2Vin- = Vout- 2SMP-02 |
| pins1->8 = 250ohm resistor |
| pin6 Vo = teensy GND |
| pin4 V- = ? (Is it GND also) |
| Pin7 V+ = A0 on teensy |
| Pin5 Ref = ? (seems to me that it should be GND again because I don't want voltage added to my signal) |