I see on page 5 of the datasheet of LM231 that the definition of Non-linearity of LM231 is as below.
'Non-linearity is defined as the deviation of fOUT from VIN × (10 kHz/−10 VDC) when the circuit has been trimmed for zero error at 10 Hz
and at 10 kHz, over the frequency range 1 Hz to 11 kHz. For the timing capacitor, CT, use NPO ceramic, Teflon®, or polystyrene.'
And I see that in a typical application of LM231 that
I have a question now.
It seems that I have should first get the ideal result of fOUT using the above formula, then I compare it with the real measured value, so I could finally get the non-linearity of LM231.
If I want to measure the non-linearity of LM231, do I have to first select some values of Rs, Rl, Rt,Ct so I could get the follwed result VIN × (10 kHz/−10 VDC)?
but how do I get the minus 10?
Is there any other convinient way or data in table fomat I could use for getting the non-linearity of LM231?
Thank you!
