JPS54107688A - Semiconductor integrated circuit for temperature detection - Google Patents
Semiconductor integrated circuit for temperature detectionInfo
- Publication number
- JPS54107688A JPS54107688A JP1519178A JP1519178A JPS54107688A JP S54107688 A JPS54107688 A JP S54107688A JP 1519178 A JP1519178 A JP 1519178A JP 1519178 A JP1519178 A JP 1519178A JP S54107688 A JPS54107688 A JP S54107688A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- temperature
- reference voltage
- temperature detection
- constituted
- 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
Landscapes
- Semiconductor Integrated Circuits (AREA)
Abstract
PURPOSE:To establish the element for temperature detection and for switching with low cost, by forming the temperature sensing element and the temperature detection circuit on one semiconductor substrate. CONSTITUTION:The circuit is constituted with the reference voltage generating circuit 7 flat in the temperature characteristics, reference voltage generating circuit 8 having temperature characteristics, differential amplifiers 9 and 10, and output buffer 11, and these are formed on one Si substrate. The circuit 7 is constituted with the P channel FET 12 and 14 and N channel FET 13 and 15. In this case, 13 and 15 are located near each other so that the threshold value can be regarded as the same, and the threshold value of 14 is formed lower than that of 12. Further, the conductance coefficient is kept equal in this pair and the reference voltage is made flat independent of temperature. Further, the circuit 8 is constituted with FET 16 to 19 as the circuit 7, but the ratio of the conductance coefficient of pair transistor is changed, producing the reference voltage having temperature dependancy. Thus, the reliability can be increased by using cancellation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1519178A JPS54107688A (en) | 1978-02-13 | 1978-02-13 | Semiconductor integrated circuit for temperature detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1519178A JPS54107688A (en) | 1978-02-13 | 1978-02-13 | Semiconductor integrated circuit for temperature detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54107688A true JPS54107688A (en) | 1979-08-23 |
| JPS6326547B2 JPS6326547B2 (en) | 1988-05-30 |
Family
ID=11881948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1519178A Granted JPS54107688A (en) | 1978-02-13 | 1978-02-13 | Semiconductor integrated circuit for temperature detection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54107688A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6350053A (en) * | 1986-08-18 | 1988-03-02 | シリコニツクス リミテイド | Temperature detector |
| US7400208B2 (en) | 2005-07-15 | 2008-07-15 | Ricoh Company, Ltd. | Temperature detector circuit and oscillation frequency compensation device using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4895194A (en) * | 1972-03-16 | 1973-12-06 |
-
1978
- 1978-02-13 JP JP1519178A patent/JPS54107688A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4895194A (en) * | 1972-03-16 | 1973-12-06 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6350053A (en) * | 1986-08-18 | 1988-03-02 | シリコニツクス リミテイド | Temperature detector |
| US7400208B2 (en) | 2005-07-15 | 2008-07-15 | Ricoh Company, Ltd. | Temperature detector circuit and oscillation frequency compensation device using the same |
| US7741925B2 (en) | 2005-07-15 | 2010-06-22 | Ricoh Company, Ltd. | Temperature detector circuit and oscillation frequency compensation device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6326547B2 (en) | 1988-05-30 |
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