Hello ALL,
I am looking for a voltage level shifter which shifts (+1.5V to -1.5V AC signal) to (0 to +3V AC signal) for giving it to a micro-controller analog pins. I selected a simple Inverting voltage summer as shown below which serves the purpose.
But, the TI's Analog Engineers calculator recommends another circuit where it asks the reference voltage to be inserted which is a non-standard value to be given at +ve pin of opamp.
I would like to know whether I can go with the circuit I selected or Is there any strong rationale to use the TI recommended circuit.