“…In almost all literature reported so far till date, the fault detection algorithm for detection of parametric faults has been developed for single-input single-output analog circuits e.g., Sallenkey band pass lter [5,8], low pass lter [3,4,7,8], leapfrog lter [1,3,5] or Elliptic lter circuit [6,7] where, the Op-amp is con gured for single ended operation and the noninverting input is grounded. In this paper, an utmost effort paid off in parametric fault detection in analog circuits where Opamp is con gured for double ended operation.…”