A 150nW CMOS novel temperature sensor for remote patient monitoring based on an auto-resonant active inductor architecture

Author

Fernandez, Eduardo ; Solar, H. ; de No, J. ; Gutierrez, I. ; Berenguer, R.

Author_Institution

LORTEK-IK4, Univ. of Navarra, San Sebastián, Spain

fYear

2012

fDate

20-23 May 2012

Firstpage

9

Lastpage

12

Abstract

An ultra low power temperature sensor suitable for human body range monitoring has been implemented using a standard 2P4M 0.35 μm CMOS process. This sensor is based on a novel Time-to-Digital Converter (TDC) architecture, which makes use of an auto-resonant cascode gyrator-C active inductor. The fabricated sensor has an active area less than 200 μm × 300 μm. It has a 0.03 °C resolution and a ±0.15 °C inaccuracy and allows high data rates with a conversion time lower than 200 μs and a power consumption less than 150 nW @ 10 samples/s.

Keywords

CMOS integrated circuits; biomedical equipment; low-power electronics; patient monitoring; telemedicine; temperature sensors; CMOS temperature sensor; TDC architecture; autoresonant active inductor architecture; autoresonant cascode gyrator-C active inductor; high data rates; human body range monitoring; power 150 nW; power consumption; remote patient monitoring; standard 2P4M 0.35 μm CMOS process; time-digital converter architecture; ultralow power temperature sensor; Active inductors; CMOS integrated circuits; Oscillators; Power demand; Temperature measurement; Temperature sensors; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2012 IEEE International Symposium on

Conference_Location

Seoul

ISSN

0271-4302

Print_ISBN

978-1-4673-0218-0

Type

conf

DOI

10.1109/ISCAS.2012.6272188

Filename

6272188