ABSTRACT
The implementation of the IoT paradigm raises very stringent constraints to integrated circuits, since IoT nodes need to be tiny, from the cubic centimeter down to the cubic millimeter scale, so that to be placed everywhere. Considering that IoT nodes need to be always connected and have those stringent power constraints, an IoT node needs to be highly reconfigurable, so that to consume power only when strictly needed. In view of the limitations of analog circuits in nanoscale CMOS, all digital and/or digital intensive replacements of IC cells commonly implemented by analog techniques have been extensively investigated. In view of the limitations of analog integrated circuits, in recent years there has been a strong trend toward the implementation of traditionally analog blocks by all-digital or digital intensive replacements. In view of the limitations of analog integrated circuits, in recent years there has been a strong trend toward the implementation of traditionally analog blocks by all-digital or digital intensive replacements.
