I'm planning on designing a PCB that takes numerous analog temperature sensor input signals and convert them using an Analog to Digital Converter (ADC) to be read by a computer. The signals need to go through a conditioning circuit prior to being read by the ADC.
I need to read so many temperature signals that it would take up a ton of space and power to have conditioning circuits for each sensor. Would it be practical to first route the temp signals through a multiplexer that then goes to a single conditioning circuit, then gets converted to a digital signal? I don't need high time resolution for the temperature measurements so we could interpret the sensors based on some frequency. I've attached a rough sketch of what I'm suggesting. From searching online so far I haven't seen anyone try to do it that way. I'm wondering if a multiplexer might distort the incoming signals too much and throw off measurements.