Oversampled interface for IC sensors with minimized analog content

Author

Leme, C.A. ; Malcovati, Piero ; Baltes, Henry

Author_Institution

Integrated Circuits & Syst. Group, Inst. Superior Tecnico, Lisbon, Portugal

Volume

44

Issue

3

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

647

Lastpage

651

Abstract

In this paper we present a new oversampled modulator architecture for A/D conversion. This modulator allows a great simplification of the analog-front-end circuits at the expense of a more complex digital signal processing for the bit stream decoding. Moreover, the system can be partitioned into two blocks communicating through noise-immune signal lines. These two features are very advantageous for sensor interfaces in remote locations and where only a minimal amount of circuitry can be cointegrated with the sensor

Keywords

CMOS integrated circuits; analogue-digital conversion; microsensors; network analysis; signal processing equipment; A/D conversion; CMOS; IC sensors; analog-front-end circuits; bit stream decoding; microsensor systems; minimized analog content; noise-immune signal lines; oversampled interface; remote locations; remote signal acquisition; sensor interfaces; Analog integrated circuits; CMOS technology; Delta modulation; Delta-sigma modulation; Digital modulation; Fabrication; Feedback circuits; Feedback loop; Microsensors; Sensor phenomena and characterization;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.387300

Filename

387300