JPS57155628A - Generating circuit of reference voltage - Google Patents

Generating circuit of reference voltage

Info

Publication number
JPS57155628A
JPS57155628A JP56040300A JP4030081A JPS57155628A JP S57155628 A JPS57155628 A JP S57155628A JP 56040300 A JP56040300 A JP 56040300A JP 4030081 A JP4030081 A JP 4030081A JP S57155628 A JPS57155628 A JP S57155628A
Authority
JP
Japan
Prior art keywords
reference voltage
generating circuit
differential
voltage generating
temperature
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
JP56040300A
Other languages
Japanese (ja)
Inventor
Jiro Sakaguchi
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 JP56040300A priority Critical patent/JPS57155628A/en
Publication of JPS57155628A publication Critical patent/JPS57155628A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/567—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for temperature compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To compensate both the temperature and power supply voltage dependent properties of the output reference voltage, by combining two reference voltage generating circuits consisting of a pair of differential MISFETs respectively. CONSTITUTION:The size and drain currents are set equal to each other for a pair of differential MISFETQ1 and Q2 having different levels of threshold voltage. Thus the 1st reference voltage generating circuit is obtained to generate the 1st reference voltage Vref1 which is equal to the difference between both threshold voltages. In the same way, the 2nd reference voltage generating circuit is formed to generate the 2nd reference voltage Vref2. Then the size and drain current ratios are set between differential MISFETQ'1 and Q'2 so as to eliminate the temperature characteristics of the 1st reference voltage. The bias current I'0 of the 2nd reference voltage generating circuit is obtained from the voltage Vref1. Then the 2nd reference voltage generating circuit is actuated to obtain the voltage Vref2. In such a way, both the temperature and power supply voltage dependent properties can be compensated.
JP56040300A 1981-03-23 1981-03-23 Generating circuit of reference voltage Pending JPS57155628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56040300A JPS57155628A (en) 1981-03-23 1981-03-23 Generating circuit of reference voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040300A JPS57155628A (en) 1981-03-23 1981-03-23 Generating circuit of reference voltage

Publications (1)

Publication Number Publication Date
JPS57155628A true JPS57155628A (en) 1982-09-25

Family

ID=12576756

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040300A Pending JPS57155628A (en) 1981-03-23 1981-03-23 Generating circuit of reference voltage

Country Status (1)

Country Link
JP (1) JPS57155628A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634894A (en) * 1985-03-04 1987-01-06 Advanced Micro Devices, Inc. Low power CMOS reference generator with low impedance driver
US5506495A (en) * 1993-07-12 1996-04-09 Fujitsu Limited Step-down circuit with stabilized internal power-supply

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132753A (en) * 1978-04-05 1979-10-16 Hitachi Ltd Referential voltage generator and its application
JPS5543657A (en) * 1978-09-25 1980-03-27 Hitachi Ltd Variable voltage output circuit
JPS55116114A (en) * 1979-02-28 1980-09-06 Nec Corp Constant voltage circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132753A (en) * 1978-04-05 1979-10-16 Hitachi Ltd Referential voltage generator and its application
JPS5543657A (en) * 1978-09-25 1980-03-27 Hitachi Ltd Variable voltage output circuit
JPS55116114A (en) * 1979-02-28 1980-09-06 Nec Corp Constant voltage circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634894A (en) * 1985-03-04 1987-01-06 Advanced Micro Devices, Inc. Low power CMOS reference generator with low impedance driver
US5506495A (en) * 1993-07-12 1996-04-09 Fujitsu Limited Step-down circuit with stabilized internal power-supply

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