Pn Junction Temperature-Sensor by Use of Superimposed AC Signal

• Takashima Noriaki

  Department of Electronics, Tohoku Gakuin University

• Kimura Mitsuteru

  Department of Electronics, Tohoku Gakuin University

Abstract

A new type absolute temperature-sensor with the measurable temperature range between 77 K and 400 K based on the forward voltage change due to the ambient temperature is proposed and demonstrated. In this temperature-sensor the forward ac voltage change or the forward ac current change at the pn junction diode due to the temperature change is measured for a constant amplitude of superimposed ac small signal of current δI or voltage δV, respectively, on the constant forward dc current I₀. This sensor has merits that it can be calibrated at only one temperature point, that output voltage is proportional to the absolute temperature T and that the measurement can be done independent of the ground point, since the ac signal circuits can be isolated from dc bias voltage circuits.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 127 (3), 140-143, 2007

  The Institute of Electrical Engineers of Japan

Keywords

• temperature-sensor
• pn diode
• forward voltage
• Si

Details

• CRID: 1390001204461658752
• NII Article ID: 10018737764
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.127.140
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 8728703
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8728703
• Web Site: http://www.jstage.jst.go.jp/article/ieejsmas/127/3/127_3_140/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed