I tried to make a circuit equation like the attached file because I didn't know what to put as Rp, Rn to verify the formula of note 9 in the data sheet.
Vos,out=（Vos x NOSEGAIN) + Ios x 22.5K + Ib x 22.5K x (1 - Rp/Rn)
However, the above formula cannot be derived.
When I looked up and searched, the attached formula
Ios = Ib +-Ib-
Ib = (Ib + + Ib-) / 2
Can you help me because I can't derive the above formula?