480 MHz 10-tap Clock Generator Using Edge-Combiner DLL for USB 2.0 Applications

Figure 23

Postlayout simulation results from VCDL and EC applied to DLL1 for variable condition at 𝑉_C=0.5 V.

(a) ff/1.30 V/−40°C

(b) tt/1.20 V/25°C

(c) ss/1.05 V/125°C