Detection ability of parametric faults in Analog circuits using CBT concept and its Test limitations

This paper represents the CBT (Co-efficient-based Test) technique to determine parametric faults mainly for a higher order low pass filter. We found that by varying signal to noise ratio as well as considering noise generated by all the elements, results a different transfer function. And from the coefficient value of that deviated transfer function, it is easy to detect faults also in practical cases. Noise generated by capacitances is also considered in the present work.