Miniature integrated capacitive pressure sensor

Yoshinori Matsumoto*, Shuichi Shoji, Masayoshi Esashi

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

8 Citations (Scopus)


A miniature integrated silicon capacitive pressure sensor has been fabricated. The pressure sensor consists of a Pyrex glass and a silicon chip. A silicon diaphragm and a CMOS capacitance to frequency converter are integrated on the same silicon chip. The silicon chip is hermetically sealed by the Pyrex glass using anodic bonding in wafer process. The sensor capacitor is formed by the silicon diaphragm and a counter metal electrode on the Pyrex glass. The output frequency is detected by the current change in power line. The pressure sensor has higher sensitivity, lower temperature drift and lower power consumption than the conventional piezoresistive pressure sensor.

Original languageEnglish
Number of pages4
Publication statusPublished - 1990
Externally publishedYes
Event22nd International Conference on Solid State Devices and Materials - Sendai, Jpn
Duration: 1990 Aug 221990 Aug 24


Other22nd International Conference on Solid State Devices and Materials
CitySendai, Jpn

ASJC Scopus subject areas

  • General Engineering


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