CONSIDERATIONS TO KNOW ABOUT LOW-NOISE AMPLIFIER

It is LM108 and LM112 (internally compensated) and there is absolutely no trick there. It has 1nA enter bias which is relatively secure with temperature as in many bipolar opamps simply because β in fact enhances with temperature. Later iterations like LT1008/LT1012 or OP97 pushed it right down toAn active inductor mainly incorporates CMOS transis