Design considerations for an automotive sensor interface ΣΔ modulator

Author

Medeiro, F. ; de la Rosa, J.M. ; del Rio, R. ; Pérez-Verdu, B. ; Rodriguez-Vàzquez, A.

Author_Institution

Instituto de Microelectron. de Sevilla, Univ. de Sevilla, Spain

Volume

3

fYear

2003

fDate

25-28 May 2003

Abstract

In this paper we discuss design considerations for a sigma-delta modulator (ΣΔM) forming part of a sensor interface for automotive applications. This ΣΔM contains a programmable-gain input interface to accommodate the output signal level of a variety of automotive sensors. We show that this characteristic can be efficiently implemented by proper architecture selection and ad hoc sampling and integration capacitor structures. Behavioral simulations of a 17 bit 40 kS/s modulators are included to illustrate the design considerations.

Keywords

CMOS integrated circuits; automotive electronics; integrated circuit design; modulators; sensors; sigma-delta modulation; ΣΔ modulator; 17 bit; ad hoc integration capacitor structures; ad hoc sampling capacitor structures; architecture selection; automotive sensor interface; behavioral simulations; programmable-gain input interface; sigma-delta modulator; Automotive applications; Automotive engineering; Capacitors; Circuit noise; Delta modulation; Intelligent sensors; Preamplifiers; Quantization; Sensor phenomena and characterization; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205075

Filename

1205075