JPS5593031A - Temperature detector - Google Patents
Temperature detectorInfo
- Publication number
- JPS5593031A JPS5593031A JP116679A JP116679A JPS5593031A JP S5593031 A JPS5593031 A JP S5593031A JP 116679 A JP116679 A JP 116679A JP 116679 A JP116679 A JP 116679A JP S5593031 A JPS5593031 A JP S5593031A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- time constant
- amplifiers
- oscillator
- setting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE:To obtain temperature information stable to variation in power voltage by setting a time constant, determined by a temperature sensing resistance and a capacitor for setting an oscillation frequency of the CR oscillator of a temperature detector, much greater than the transfer delay time of the amplifier of the CR oscillator. CONSTITUTION:Output terminal (a) of amplifier 15 among amplifiers 11-15 consisting of MOS transistors is connected to input terminal (b) of amplifier 11 via temperature sensing resistance R1, and this input terminal (b) is to connection point (c) between the output terminal of amplifier 14 and the input terminal of amplifier 15 via capacitor C1 for oscillation frequency setting. A time constant, determined by oscillation-frequency setting capacitor C1 and temperature sensing resistance R1 of the CR oscillator like this, is set 500 times as great as the transfer delay time of amplifiers 11-15, i.e. a time constant determined by output resistance and the total parasitic capacity such as the gate capacity and wiring capacity of MOS transistors constituting amplifiers 11-15. Consequently, the variation rate of the time constant of the temperature detector can be reduced and temperature information stable to variation in power voltage can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP116679A JPS5593031A (en) | 1979-01-08 | 1979-01-08 | Temperature detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP116679A JPS5593031A (en) | 1979-01-08 | 1979-01-08 | Temperature detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5593031A true JPS5593031A (en) | 1980-07-15 |
Family
ID=11493846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP116679A Pending JPS5593031A (en) | 1979-01-08 | 1979-01-08 | Temperature detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5593031A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7649426B2 (en) | 2006-09-12 | 2010-01-19 | Cts Corporation | Apparatus and method for temperature compensation of crystal oscillators |
-
1979
- 1979-01-08 JP JP116679A patent/JPS5593031A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7649426B2 (en) | 2006-09-12 | 2010-01-19 | Cts Corporation | Apparatus and method for temperature compensation of crystal oscillators |
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