Iterative built-in testing and tuning of mixed-signal/RF systems

Design and test of high-speed mixed-signal/RF circuits and systems is undergoing a transformation due to the effects of process variations stemming from the use of scaled CMOS technologies that result in significant yield loss. To this effect, post-manufacture tuning for yield recovery is now a necessity for many high-speed electronic circuits and systems and is typically driven by iterative test-and-tune procedures. Such procedures create new challenges for manufacturing test and built-in self-test of advanced mixed-signal/RF systems. In this paper, key test challenges are discussed and promising solutions are presented in the hope that it will be possible to design, manufacture and test ¿truly self-healing¿ systems in the near future.