So i have designed a basic preamp circuit with an op amp and National Semiconductor evaluation board. Im trying to measure the noise that the circuit creates. Im having some trouble doing this properly.
Im using a very high bandwidth op amp (1.5Ghz) connected in non inverting configuration. Ive also got a capacitor on the feedback resistor to roll the gain off at 20Mhz.
Ive got a spec that I am trying to see weather i meet or not. aprox 60uV
Ive quite a bit of test equipment availbale but ive come to a dead end. I tried shorting the input and measuring the output with a Boonton RF voltmeter. But this device only goes down to a 200uV accuracy. So Measuring 60uV is impossible.
Any ideas? Whats the standard way of MEASURING noise? Not calculating it....
Thanks!
Ethan
Im using a very high bandwidth op amp (1.5Ghz) connected in non inverting configuration. Ive also got a capacitor on the feedback resistor to roll the gain off at 20Mhz.
Ive got a spec that I am trying to see weather i meet or not. aprox 60uV
Ive quite a bit of test equipment availbale but ive come to a dead end. I tried shorting the input and measuring the output with a Boonton RF voltmeter. But this device only goes down to a 200uV accuracy. So Measuring 60uV is impossible.
Any ideas? Whats the standard way of MEASURING noise? Not calculating it....
Thanks!
Ethan