Row-Based Dual 𝑉_dd Assignment, for a Level Converter Free CSA Design and Its Near-Threshold Operation

Table 4

Comparison of different design styles for the 4-operand CSA.

Design style	Supply voltage; (Volt)	Average power; (Watt)	Delay, 𝑡𝑑max; (Second)
Conventional CSA design	𝑉dd=1	3.307×10^−6	2.071×10^−10
Proposed scheme of CSA design	𝑉ddL=0.4,; 𝑉ddH=0.5	3.009×10^−7	4.324×10^−9
Subthreshold CSA design	𝑉dd=0.4	1.577×10^−7	7.774×10^−9