Low power and more accurate temperature sensor with an integrated dual slope AD converter

Author

Nagahisa, Takeshi ; Kubota, Shinichi ; Watanabe, Hirobumi

Author_Institution

Ricoh Co. Ltd., Osaka, Japan

fYear

2012

fDate

9-11 May 2012

Firstpage

1

Lastpage

2

Abstract

A digital temperature sensor with an integrated dual slope ADC is recently proposed. In the present study, a smaller digital temperature sensor is realized by integrating a dual-slope capacitor, which is usually attached to an integrated circuit device. A proper designed circuit can supply a voltage of 2.3 V and a consumption current of 50 μA. Adopting the CV characteristics of the MOS capacitor allows the sensing accuracy to be improved by 0.5°C.

Keywords

MOS capacitors; analogue-digital conversion; integrated circuit design; low-power electronics; temperature sensors; CV characteristics; MOS capacitor; circuit design; current 50 muA; digital temperature sensor; dual-slope capacitor; integrated circuit device; integrated dual slope AD converter; sensing accuracy; temperature 0.5 degC; voltage 2.3 V; Accuracy; Capacitors; Discharges (electric); MOS capacitors; Temperature sensors; Timing; CV characteristics of the MOS capacitor; Integrated Dual Slope AD Converter; Low Power;

fLanguage

English

Publisher

ieee

Conference_Titel

Future of Electron Devices, Kansai (IMFEDK), 2012 IEEE International Meeting for

Conference_Location

Osaka

Print_ISBN

978-1-4673-0837-3

Type

conf

DOI

10.1109/IMFEDK.2012.6218588

Filename

6218588