I have a voltage sensing reading around 0.6V - 3.3V and I seek to subtract the 0.6V baseline prior to the ADC. I believe using a differential amplifier configuration would be suitable for my purposes. But I am not getting the results I aim for. I suspect my differential amplifier circuit is set-up wrong or I am using the amplifier incorrectly.
I am using this set-up with a TS922 (http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00001188.pdf) op-amp chip and all the resistors equal to 63K Ohms. Vcc+ = 3.3V , Vcc- = GND, V2 = 0.6V - 3.3V reading , V1 = 0.6V (from voltage divided 3.3V).
I get a close to 0V reading but the sensitivity of the voltage reading is null.
I would greatly appreciate any and all help. Thank you for your time :).