Analysis of ultralow-power asynchronous ADCs

Author

Balasubramanian, Viswanathan ; Heragu, Aravind ; Enz, Christian

Author_Institution

Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

3593

Lastpage

3596

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISCAS.2010.5537806

Filename

5537806