JPS557664A - Temperature detection circuit - Google Patents
Temperature detection circuitInfo
- Publication number
- JPS557664A JPS557664A JP8110378A JP8110378A JPS557664A JP S557664 A JPS557664 A JP S557664A JP 8110378 A JP8110378 A JP 8110378A JP 8110378 A JP8110378 A JP 8110378A JP S557664 A JPS557664 A JP S557664A
- Authority
- JP
- Japan
- Prior art keywords
- fet
- temperature detection
- temperature
- detection circuit
- circuit
- 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.)
- Granted
Links
Abstract
PURPOSE:To achieve circuit integration for the temperature detection circuit, by performing temperature detection through the use of the temperature characteristics for the threshold value of the transistor in the A/D conversion circuit. CONSTITUTION:The reference voltage from the terminal 301 is divided with the resistors R1 to R4 and it is fed to the respective gate of FET 309, 310 and 311 for temperature detection. This resistance ratio plays a role of determining the temperature detection point. By using the temperature characteristics of the threshold voltage of FET, each FET is turned off a certain temperature range, only FET 309 is ON at another range and FET 309,310 or all FET's are turned on at other cases. Accordingly, the output of (0,0,0), (1,0,0),(1,1,0) and (1,1,1) is obtained from the inverters 415, 416 and 417 to enable temperature detection. Thus, the detection circuit can be constituted on an IC substrate with FET's and resistors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8110378A JPS557664A (en) | 1978-07-04 | 1978-07-04 | Temperature detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8110378A JPS557664A (en) | 1978-07-04 | 1978-07-04 | Temperature detection circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS557664A true JPS557664A (en) | 1980-01-19 |
JPS6159450B2 JPS6159450B2 (en) | 1986-12-16 |
Family
ID=13737039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8110378A Granted JPS557664A (en) | 1978-07-04 | 1978-07-04 | Temperature detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS557664A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01130838U (en) * | 1988-03-01 | 1989-09-06 |
-
1978
- 1978-07-04 JP JP8110378A patent/JPS557664A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6159450B2 (en) | 1986-12-16 |
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