A comparative analysis of various programmable delay elements using predictive technology model

This paper makes a critical investigation of six programmable delay-producing elements used in present day technology. In signal processing applications, these circuits are capable of incorporating a fixed duration of delay, while keeping the signal integrity intact as well. This comparative study among the six delay-producing elements aids the design engineers in selecting an appropriate delay generating element as per the applications desired. Performance estimation of these delay circuits has been performed at the transistor level. Individual waveforms compiled in the corresponding sections of this paper have been obtained from the extensive simulations executed on SPICE using Predictive Technology Model (PTM) @ 16-nm technology. Finally, significance and future scope of work in this area has been discussed in a nutshell and concluding remarks have been drawn based on the observations made.