Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide Monte Carlo and sensitivity (worst-case) analyses October 2019 597 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. In the above figure, output is monotonic within the tolerance range. Sensitivity analysis correctly points to the minimum value. Figure 13-16 Incorrect worst-case results. In the above figure, output is non-monotonic within the tolerance range, thus producing incorrect worst-case results. Consider a slightly different scenario: Rb2 is set to 720 ohms so that maximizing it is not enough to saturate the BJT, but Rb1 is variable also. The true worst case occurs when Rb2 is maximized and Rb1 is minimized. Checking their individual effects is not sufficient, even if the circuit were simulated four times with each resistor in turn set to its extreme values.