Title :
A 75.9dB-SNDR 2.96mW 29fJ/conv-step ringamp-only pipelined ADC
Author :
Hershberg, Benjamin ; Un-Ku Moon
Author_Institution :
Imec, Leuven, Belgium
Abstract :
A high resolution pipelined ADC that performs precision amplification using only ring amplifiers is presented. Several enabling techniques are introduced, namely parallelization via the use of Composite Ring Amplifier Blocks and a new ringamp topology designed for high-precision use. The 15b ADC achieves 75.9 dB SNDR and 91.4 dB SFDR at 1.2 V supply and 20 Msps conversion rate. Total power consumption is 2.96 mW, resulting in a Figure-of-Merit of 29 fJ/c-step.
Keywords :
amplifiers; analogue-digital conversion; SFDR; SNDR; composite ring amplifier block; parallelization technique; pipelined ADC; power 2.96 mW; precision amplification; ringamp topology; voltage 1.2 V; Accuracy; Circuit stability; Inverters; Structural rings; Switched capacitor circuits; Switches; Very large scale integration;
Conference_Titel :
VLSI Circuits (VLSIC), 2013 Symposium on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-5531-5
