A low-voltage low-power sigma-delta modulator for bio-potential signals

Autor:	Szu-Chieh Liu, Kea-Tiong Tang
Rok vydání:	2011
Předmět:	business.industry Computer science Amplifier Bandwidth (signal processing) Electrical engineering Delta-sigma modulation law.invention CMOS law Electronic engineering Operational amplifier Oversampling Cascode business Low voltage
Zdroj:	2011 IEEE/NIH Life Science Systems and Applications Workshop (LiSSA).
DOI:	10.1109/lissa.2011.5754146
Popis:	This paper presents the design and implementation of a low-power, low-voltage sigma delta modulator (SDM) with a standard 0.18µm CMOS technology. A novel cascode current mirror operational trans-conductance amplifier (OTA) is utilized to enlarge the input common-mode range. The one-stage OTA structure is simple and low-power comparing with the traditional multi-stage folded cascode structure. The designed modulator achieved 68.6-dB signal-to-noise-and-distortion-ratio (SNDR) in 10-kHz bandwidth with an oversampling ratio of 64. The power consumption was 60µW with an 0.9-V power supply.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5fe356ea532def8122e3b965e480cb41 https://doi.org/10.1109/lissa.2011.5754146 Zobrazit plný text záznamu