Mixed signal DFT: a concise overview

Practical mixed-signal DFT solutions are presented with an emphasis on performance, cost, and test coverage. Special consideration is given to the possible DFT techniques for Phase-Locked Loops (PLLs) with associated implications on test coverage, performance, cost, and time to market. An introduction to practical DFT techniques for data converters (A/D and D/A) follow. An overview of IEEE P1149.4 analog test bus standard concludes the embedded tutorial.