Amplify voltage

林廉定

Amplify voltage [Copy link]

I want to amplify a 20mV voltage. How can I do this? How can I do this? Help

maychang

"I want to amplify a 20mV voltage."

Is it AC or DC (AC that changes very slowly)? If it is DC, how many times or how much does it need to be amplified? What are the requirements for accuracy? If it is AC, what is the frequency? How many times or how much does it need to be amplified? What are the requirements for distortion?

Fred_1977

It can be done with an inverting amplifier, and the output gain can be adjusted by the feedback resistor. The chip can be ordinary, such as 324 or 4558.

javnson

I hope the young comrade is not doing analog electronics experiments, hahahahahahahahahahahahahahahahahahahahahaha. Just pick out any circuit composed of triode amplifier circuit and operational amplifier.

se7ens

20mv is indeed a bit small. When choosing an op amp, you have to consider the input drift.

ps: Does the OP already have a plan? I would like to ask for a better one?