An oversampled sigma-delta A/D converter using time division multiplexed integrator

Author

Ueno, Fumio ; Inoue, Takahiro ; Sugitani, Kenichi ; Kinoshita, Masaaki ; Ogata, Yutaka

Author_Institution

Dept. of Electr. Eng. & Comput. Sci.. Kumamoto Univ., Japan

fYear

1990

fDate

12-14 Aug 1990

Firstpage

748

Abstract

A small-scale sigma-delta modulator for a sigma-delta A/D converter is presented. The proposed modulator employs a double-integration switched-capacitor architecture. The circuit configuration has low sensitivity to the process deviation of analog components. The scale of the circuit is so small because of its use of a time division multiplexed integrator, By means of simulation, the proposed modulator achieves 71.6 dB signal-to-noise ratio and 76.4 dB dynamic range at a sampling rate of 3 MHz

Keywords

analogue-digital conversion; delta modulation; integrating circuits; modulators; switched capacitor networks; time division multiplexing; double-integration switched-capacitor architecture; dynamic range; oversampling ADC; sampling rate; sigma-delta A/D converter; signal-to-noise ratio; simulation; small-scale sigma-delta modulator; time division multiplexed integrator; Circuit noise; Delta-sigma modulation; Digital filters; Dynamic range; Low pass filters; Low-frequency noise; Quantization; Signal resolution; Signal to noise ratio; Time division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., Proceedings of the 33rd Midwest Symposium on

Conference_Location

Calgary, Alta.

Print_ISBN

0-7803-0081-5

Type

conf

DOI

10.1109/MWSCAS.1990.140828

Filename

140828