If a circuit has say less than 2 microVolt peak-to-peak noise at DC to 100 Hz with 10,000 Ohm source.
How would the noise increase at 1000 Hz? Would it become 8 microVolt or 30 microVolt? For a 1-10 mV signal. What must be the minimum noises in microVolt to make it produce good signal?
Also does input impedance change with frequency, like becoming 100 Ohm from 10,000 Ohm?
Please give actual example of other amplifier to see how the noise behavior changes with frequency.
Thank you.
How would the noise increase at 1000 Hz? Would it become 8 microVolt or 30 microVolt? For a 1-10 mV signal. What must be the minimum noises in microVolt to make it produce good signal?
Also does input impedance change with frequency, like becoming 100 Ohm from 10,000 Ohm?
Please give actual example of other amplifier to see how the noise behavior changes with frequency.
Thank you.