We use cookies to provide our visitors with an optimal site experience. View our privacy notice and cookie notice to learn more about how we use cookies and how to manage your settings. By proceeding on our website you consent to the use of cookies.
I need a circuit of a precision, low noise current stabilizer on opa827 + jfe150 + feedback resistor as small as possible. I know that the higher the resistor, the noisier it is. At the moment I have a 40 megaohm resistor. But further I will try to put a resistor 1000 times smaller it is 40 kOhm. At the same time I will have to reduce the reference voltage 1000 times from 4 volts to 0.004 volts.
In the future I am going to consider microcircuits better than opa827, which can work with even lower reference voltages, can you suggest which microcircuits to consider. I will also consider low noise resistors.
The circuit will be powered from a bi-polar supply.
And also maybe there are already ready solutions, or maybe developed schemes to significantly reduce the nominal resistor, ideally that it is not there at all, so that no noise, well, or at least very small was, for example, 4 kOhm, 400 Ohm, 40 Ohm.
