温度センサ用リングオシレータ、温度センサ回路及びこれを備える半導体装置

Title:

温度センサ用リングオシレータ、温度センサ回路及びこれを備える半導体装置

Document Type and Number:

Japanese Patent JP4843034

Kind Code:

B2

Abstract:

A ring oscillator includes an odd number of unit circuits connected in series each of which includes an inverter. Each of the unit circuits includes the inverter and a MOSFET. The MOSFET is an FET which is a temperature sensor, and uses a drain-source leakage current in a state that the FET is normally turned off.

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Inventors:

Keigo Nakatani

Application Number:

JP2008520105A

Publication Date:

December 21, 2011

Filing Date:

June 09, 2006

Export Citation:

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Assignee:

富士通株式会社

International Classes:

G01K7/01; H01L21/822; H01L27/04; H03K3/354; H03K17/945

Domestic Patent References:

JPH10239097A	1998-09-11
JPH05175793A	1993-07-13

Attorney, Agent or Firm:

Akihiko Watanabe
Keiko Shigehisa

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