Is buffer needed for very long coaxial cable carrying DC analog signals coupled to an ADC with a huge input impedance
texas instruments buffer example: link



Your source is the transducer's voltage and the 50 ohm should be replaced to 10M (for example). The output resistor 50 ohm matches the characteristics impedance of your cable (50 or 75, for example). At the end you should place the same resistor (50 or 75 ohm).







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