Op-Amp Stabilitybaker’s best By bonnie baker ,, S 140 120 100 80 VOLTAGE GAIN 60 (dB ) 40 20 0 20 Just use a 100 resistor o there I was, a new hire for a leading-edge analog-electronics company. As it was my first job, I was wide-eyed and excited―confronting new problems left and right. One problem I ran into involved the stability of an amplifier circuit. In this application, a buffer-amplifier circuit, with a capacitive load, sang like a bird. Because I had a huge community of experts around me, I ran around and asked for advice. The words of wisdom that came down to me were, “Oh, put a 100V load resistor between the amplifier output and the load capacitor.” When I asked why, the engineer said, “Just do it. Trust me; it will work.” So, I built a new circuit as suggested, and, lo and behold, the circ……