Digitally-assisted analog circuits for a 10 Gbps, 395 fJ/b optical receiver in 40 nm CMOS

Autor: Philip Amberg, Ashok V. Krishnamoorthy, Hesam Fathi Moghadam, Ron Ho, Dinesh Patil, Michael Dayringer, Elad Alon, Jon Lexau, Jon Gainsley, John E. Cunningham, Xuezhe Zheng, Frankie Liu
Rok vydání: 2011
Předmět:
Zdroj: A-SSCC
Popis: Digital “assist” circuits can improve the efficiency of traditionally analog circuit blocks, especially as technologies scale to the detriment of analog blocks. We apply some of these techniques to a 10 Gbps optical reciever, and demonstrate 395 fJ/b energy efficiency. Digital calibration blocks wrapped around a simple analog core enabled offset compensation, TIA biasing, and DLL re-timing, and cost negligible performance and power overhead. The assist circuits cost around 40% area overhead.
Databáze: OpenAIRE