FAULT-BASED TESTING AND DIAGNOSIS OF BALANCED FILTERS

The test and diagnosis of fully differential analogue filters are addr essed in this paper, Full coverage of hard/soft faults affecting circu it behaviour can be achieved by adjusting the tolerance window of the built-in self-test circuitry and the amplitude and frequency of the in put test signal. Under a single fault assumption, the faulty active or passive component is located and the actual defective value of a faul ty passive component is determined, A test generation procedure which results in maximum fault coverage and maximal diagnosis of hard/soft f aults in the filter is presented. The test and diagnosis approach can be made compatible with IEEE Std 1149.1 for boundary scan testing.