Howard K. Schoenwetter, High accuracy settling time measurements (1983)
“ To minimize the settling time of the amplifier and switch circuits, Schottky clipping diodes (not shown) are employed to limit the input and output signals of the amplifier at nodes and , as well as its gain, when is large. As with most operational amplifiers with a gain-bandwidth product larger than about 500 MHz, amplifier (and, therefore, the test set) experiences significant recovery time effects when exercised over a wide range of operating conditions. Therefore, the test circuit shown in Fig. 2 is preferred over the above circuit for recovery time measurements on voltage-output devices. ”
