Title :
11.5 A 100MS/s 10.5b 2.46mW comparator-less pipeline ADC using self-biased ring amplifiers
Author :
Yong Lim ; Flynn, Michael P.
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
Pipelined ADCs require accurate amplification; however traditional OTAs limit power efficiency since they require high quiescent current for slewing. In addition, it is difficult to design low-voltage OTAs in modern, scaled CMOS. The ring amplifier [1-4] provides an intriguing alternative to traditional OTAs. This work improves the power efficiency and practicality of the ring amplifier by introducing a self-biasing scheme and by eliminating the comparators.
Keywords :
CMOS integrated circuits; analogue-digital conversion; operational amplifiers; accurate amplification; comparator-less pipeline ADC; low-voltage OTA; power 2.46 mW; power efficiency; scaled CMOS integrated circuits; self-biased ring amplifiers; self-biasing scheme; traditional OTA; Capacitors; Flip-flops; Inverters; Pipelines; Power supplies; Resistance; Transistors;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4799-0918-6
DOI :
10.1109/ISSCC.2014.6757400
