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JPS562015A - Reference voltage generating circuit - Google Patents

Reference voltage generating circuit

Info

Publication number
JPS562015A
JPS562015A JP7565379A JP7565379A JPS562015A JP S562015 A JPS562015 A JP S562015A JP 7565379 A JP7565379 A JP 7565379A JP 7565379 A JP7565379 A JP 7565379A JP S562015 A JPS562015 A JP S562015A
Authority
JP
Japan
Prior art keywords
temperature coefficient
voltage generating
amplifier
input terminal
resistances
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
Application number
JP7565379A
Other languages
Japanese (ja)
Inventor
Takao Harakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7565379A priority Critical patent/JPS562015A/en
Publication of JPS562015A publication Critical patent/JPS562015A/en
Pending legal-status Critical Current

Links

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  • Control Of Voltage And Current In General (AREA)

Abstract

PURPOSE: To obtain an output voltage low in temperature coefficient easily by correcting a difference in the absolute value of a temperature coefficient between reference electric power sources by applying an operational amplifier with reference voltages, differing in sign of the temperature coefficient, via resistors and by connecting feedback resistances to this amplifier.
CONSTITUTION: Reference voltage generating source 1 with a positive temperature coefficient and reference voltage generating source 2 with a negative temperature coefficient are connected to one input terminal "-" of operational amplifier 6 via resistances 3 and 4 respectively and the other input terminal "+" of amplifier 6 is connected to a reference potential (grounded). Further, negative feedback resistance 5 is connected between the output terminal and input terminal "-" of amplifier 6. Then, resistances 3 and 4 correct the difference in the absolute value between the temperature coefficients of voltage generating sources 1 and 2 and negative feedback resistance 5 adjusts output voltage V0, thereby outputting random output voltage V0 of a small temperature coefficient.
COPYRIGHT: (C)1981,JPO&Japio
JP7565379A 1979-06-18 1979-06-18 Reference voltage generating circuit Pending JPS562015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7565379A JPS562015A (en) 1979-06-18 1979-06-18 Reference voltage generating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7565379A JPS562015A (en) 1979-06-18 1979-06-18 Reference voltage generating circuit

Publications (1)

Publication Number Publication Date
JPS562015A true JPS562015A (en) 1981-01-10

Family

ID=13582411

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7565379A Pending JPS562015A (en) 1979-06-18 1979-06-18 Reference voltage generating circuit

Country Status (1)

Country Link
JP (1) JPS562015A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955488A (en) * 1982-09-24 1984-03-30 セイコーエプソン株式会社 Integrated circuit containing liquid crystal voltage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5955488A (en) * 1982-09-24 1984-03-30 セイコーエプソン株式会社 Integrated circuit containing liquid crystal voltage
JPH0372987B2 (en) * 1982-09-24 1991-11-20 Seiko Epson Corp

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