I would like to use two transistor to switch on/off two paths to an ADC input so that only one path is active at a time. Is this a bad practice? I'm aware of analog switches but don't know if something that complex is necessary for my simple application. Is there any information about the resistance between the collector and emitter of NPN transistors? I want to make sure using the transistor as a switch for the analog signal doesn't mess up my analog readings in the ADC. Accuracy and resolution is important here (true 16-bit ADC). Would a particular type of transistor be preferable for this application if using transistors is viable at all? The AIN values can range from 0V to Vref on the ADC.
The circuit I'm considering is like this:
AIN1 ----- Transistor1 -----
|--------- ADC Input
AIN2 ----- Transistor2 -----