Hi team.
I'd like to know about the input noise accuracy.
The input noise is typ value.
Is there Min and Max value as a reference value.
If you don't have it, I'd like to know what the Max/Min is likely to be.
My customer is having trouble with input noise and they suspect it is the cause.
Sincerely.
Kengo.
The typical total integrated input voltage noise for OPA2333 max noise bandwidth (G=1) is 48uVrms - see below - but this does not include current noise (it depends on the input impedance) and the noise from the external passive components like resistors and EMI/RFI.
As a rule of thumb, the broadband noise may vary over process variation up to +/-30% while 1/f noise may double from its typical value. Thus if your customer uses the OPA2333 in a buffer configuration, its total noise is dominated by the broadband noise and a max variation of 30% from its typical value would translate into ~+16% increase in total noise from the value simulated above.
