Ultra-dynamic voltage scaling using sub-threshold operation and local voltage dithering in 90nm CMOS

@article{Calhoun2005UltradynamicVS,
  title={Ultra-dynamic voltage scaling using sub-threshold operation and local voltage dithering in 90nm CMOS},
  author={B. H. Calhoun and Anantha Chandrakasan},
  journal={ISSCC. 2005 IEEE International Digest of Technical Papers. Solid-State Circuits Conference, 2005.},
  year={2005},
  pages={300-599 Vol. 1}
}
Local voltage dithering combined with sub-threshold operation permits ultra-dynamic voltage scaling from 1.1 V to below 300 mV for a 90 nm CMOS adder test chip. Operating at 330 mV, it provides minimum energy per cycle with 9-times less energy than ideal shutdown for reduced-rate scenarios. Measurements characterize the minimum energy point across temperature. 
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