COAXIAL SWITCH CAN BE FUN FOR ANYONE

It truly is LM108 and LM112 (internally compensated) and there is basically no trick there. It's got 1nA input bias which can be quite stable with temperature as in most bipolar opamps for the reason that β in fact increases with temperature. Later on iterations like LT1008/LT1012 or OP97 pushed it right down toI are already working on a very low