13.18 Recalling from Chapters 2 and 9 that the input bias current of an op amp is the average of its two input currents,
and the input offset current is
find IB and IOS for IREF = 19 µA if β1 and β2 are nominally 200 but can deviate from nominal by as much as ±5%.
47.5 nA; 4.75 nA
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