Digital control ring oscillator and method of assembling same

摘要

A digital control ring oscillator (DCO) generally comprises a first delay element and at least one second delay element that is coupled to the first delay element, wherein each of the first and second delay elements are disposed laterally with respect to one another in a first direction and include at least one cell. The cell includes a plurality of transistors arranged in at least one stack.

主权项

1. A circuit comprising:
a first delay element; and at least one second delay element coupled to the first delay element, wherein each of the first and second delay elements are disposed laterally with respect to one another in a first direction and each comprise at least one cell comprising a plurality of transistors arranged in at least two tiers of at least one stacked 3D integrated circuit, the at least two tiers arranged physically one above the other.