Title :
Analysis of ultralow-power asynchronous ADCs
Author :
Balasubramanian, Viswanathan ; Heragu, Aravind ; Enz, Christian
Author_Institution :
Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
fDate :
May 30 2010-June 2 2010
Abstract :
In this paper, analysis of a novel class of A/D converters based on asynchronous delta modulation (DM) is presented and a high level model is realized for the same. Using the high level model, analytical expressions are derived for the calculation of the inband signal-to-quantization noise ratio (SQNR) for the case of sinusoidal inputs and two-tone inputs. For the special case of sinusoidal inputs, an empirical formula is also derived for calculating the inband SQNR. The derived analytical and empirical expressions are verified using high level simulations and the simulation results are presented finally.
Keywords :
analogue-digital conversion; delta modulation; low-power electronics; A/D converters; asynchronous delta modulation; signal-to-quantization noise ratio; sinusoidal inputs; two-tone inputs; ultra low-power asynchronous ADCs; Analytical models; Delta modulation; Digital filters; Digital modulation; Energy consumption; Finite impulse response filter; Logic; Pulse width modulation; Signal sampling; Space vector pulse width modulation;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537806
