I'm new to here and I did already some of the research but cannot really find an answer. I'm not very familiar with op-amps.
I have wired a LM358 op-amp as per the below example schematic in the MCP4725 DAC datasheet. The problem is that I'm getting only +2.7 V all the way to -2.2 V (I guess because I used 22 kΩ resistor instead of 20 kΩ) on the 12-bit DAC resolution.
However, I used bipolar supply with +/-15 V, and I was expecting the output voltage to be somewhere close to the 15 V both ways, or at least 10 V. Can somebody please explain what am I missing in order to reach my voltage output? Is the op-amp chosen wrong? If so, can you please recommend a device to use?
Thank you very much in advance for any help.
- R1 and R4 are 22kΩ
- R2 and R3 are 10kΩ