I have an input signal from -3.3V to 3.3V and the ADC I would like to use can only read from 0 to 3.3V.
I also have access to a stable source of power at 3.3V.
From previous visits, I have tried to read Carter's "Designing Gain and Offset Circuits" as best I can.
- Vref = 3.3
- Vout fs = 3.3
- Vout zs = 0
- Vin fs = 3.3
- Vin zs = -3.3
I believe: my m = 0.5 > 0 and my b = 1.65 > 0. Thus, I am in Carter's first scenario (Carter's Figure 1):
For R1, I have selected 10 kOhm. I have computed R2 to be the same 10 kOhm.
- (I think R1 = 10 k Ohm is OK, right?) [EDIT: Thanks for confirmation]
- I do not know how to find Rf. Will a 10 k Ohm be OK?
- When I try to compute Rg, I get 0 in the denominator! What resistance should I choose? [EDIT: Thank you @Michael ~ OK no resistor here]
- Is the
LM358[EDITED @Dwayne Reid Thank you.] NE5532 is a reasonable amplifier for this project? If not, please provide some guidance.
Thank you, in advance, for your time & assistance.