Soft Defect Localization (SDL) applied on analog and mixed-mode ICs failure analysis

Soft Defect Localization (SDL) has been applied on digital ICs failure analysis. But for analog and mixed-mode ICs, it is not so common. The analog failure types and characters are various, such as pulse width, amplitude, delay time, and so on. It is difficult to detect them directly by SDL system. In this paper, two FA cases are introduced to explain how to perform SDL on analog failures.