An energy-efficient 1MSps 7W 11.9fJ/conversion step 7pJ/sample 10-bit SAR ADC in 90nm
Document Type
Conference Proceeding
Publication Date
8-2-2011
Abstract
Current trends constantly increase the need for ultra-low power solutions for the embedded and portable hardware. One circuit component required in wide range of devices is the analog-to-digital converter (ADC). In this paper we propose an extremely energy-efficient successive approximation register (SAR) ADC, in which we have overcome the limitations of conventional approaches through topological improvements. Further, advances include a novel bootstrapped track and hold (T/H) circuitry. Statistical simulations indicate an ADC with a figure of merit (FOM) of 11.9 fJ per conversion step, and an effective number of bits (ENOB) of 9.2, operating close to Nyquist frequency, sampling at 1 Msps. To put it into perspective, consuming only 7 pJ/sample, this ADC is able to work at its maximum speed for more than 40 years with the total energy of a single alkaline AA battery. © 2011 IEEE.
Publication Title
Proceedings - IEEE International Symposium on Circuits and Systems
Recommended Citation
Kuntz, T.,
Rodrigues, C.,
&
Nooshabadi, S.
(2011).
An energy-efficient 1MSps 7W 11.9fJ/conversion step 7pJ/sample 10-bit SAR ADC in 90nm.
Proceedings - IEEE International Symposium on Circuits and Systems, 261-264.
http://doi.org/10.1109/ISCAS.2011.5937551
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/10671