JPS54143185A - Temperature detecting circuit - Google Patents
Temperature detecting circuitInfo
- Publication number
- JPS54143185A JPS54143185A JP4093678A JP4093678A JPS54143185A JP S54143185 A JPS54143185 A JP S54143185A JP 4093678 A JP4093678 A JP 4093678A JP 4093678 A JP4093678 A JP 4093678A JP S54143185 A JPS54143185 A JP S54143185A
- Authority
- JP
- Japan
- Prior art keywords
- fets
- difference
- voltage
- detecting circuit
- channels
- 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
- 230000000295 complement effect Effects 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
Landscapes
- Control Of Electrical Variables (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
PURPOSE:To improve the performance of an integrated temperature detecting circuit by making a reference power source of complementary type FETs and by using the difference between the threshold values of the FETs. CONSTITUTION:A bias circuit for determining a reference voltage is constructed to include FETs 211 and 212 of P and N channels having an equal value of beta, and a resistor 217. On the other hand, if FETs 213 and 214 of P and N channels have an equal value of beta, and if resistors 215 and 216 have an equal resistance, the output potential Vo at a terminal 218 is expressed by Equation - 1. As a result, since the potential Vo is given as the difference between the threshold voltage values of the FETs of P and N channels, the temperature characteristics of the voltage difference are used to detect the temperature. Moreover, since the voltage Vo is not dependent upon the supply voltage but uses the difference between the threshold voltages, the fluctuations not only between the elements but also between the resistances can be eliminated so that the performance of the integrated detecting circuit can be improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4093678A JPS54143185A (en) | 1978-04-07 | 1978-04-07 | Temperature detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4093678A JPS54143185A (en) | 1978-04-07 | 1978-04-07 | Temperature detecting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54143185A true JPS54143185A (en) | 1979-11-08 |
| JPS6120802B2 JPS6120802B2 (en) | 1986-05-23 |
Family
ID=12594378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4093678A Granted JPS54143185A (en) | 1978-04-07 | 1978-04-07 | Temperature detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54143185A (en) |
-
1978
- 1978-04-07 JP JP4093678A patent/JPS54143185A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6120802B2 (en) | 1986-05-23 |
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