THE 2-MINUTE RULE FOR LOW-NOISE AMPLIFIER

For your reasons of the software Observe, the resistor noise is restricted to thermal (Johnson) sounds. To maintain a very low level of such a sounds, resistance values need to be as small as you possibly can because RMS voltage of thermal (Johnson) sounds is proportional to your sq. root from the resistor price. By way of example, a 1 kΩ resistor