I am using a sensor that gives 5V output However, the ADC I am using can sense only a 3.3V at absolute maximum. A very simple way of translating a 5V to 3.3V was to use a voltage divider as shown. However, the resistor R2 comes in parallel with ADC equivalent impedance and so the overall ratio of voltage divider changes. How can I solve this problem? P.S I don't know the equivalent impedance of ADC and none is provided in datasheet
One solution I found was to use an op-amp between ADC and R2 as then R2 will be in parallel with op-amp input impedance which is infinite ideally and so problem will be solved. But I don't know if it'll work. Will it work? If not then what is the solution?
Also I am completely open to other ways of translating 5V output to 3.3V ADC input. Thanks