JPS5575313A - Offset voltage compensating circuit for amplifier - Google Patents

Offset voltage compensating circuit for amplifier

Info

Publication number
JPS5575313A
JPS5575313A JP14777578A JP14777578A JPS5575313A JP S5575313 A JPS5575313 A JP S5575313A JP 14777578 A JP14777578 A JP 14777578A JP 14777578 A JP14777578 A JP 14777578A JP S5575313 A JPS5575313 A JP S5575313A
Authority
JP
Japan
Prior art keywords
voltage
offset voltage
output
amplifier
input
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
JP14777578A
Other languages
Japanese (ja)
Inventor
Kunihiko Matsui
Sukeyoshi Tanaka
Tetsuji Kobayashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14777578A priority Critical patent/JPS5575313A/en
Publication of JPS5575313A publication Critical patent/JPS5575313A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To eliminate the effect of the offset voltage by giving the alternating switch between the input and output terminals of the operational amplifier with the 50% duty ratio. CONSTITUTION:In case switches 35b and 35a' plus 36b and 36c are kept on during time T1, the sum emerges at the output side between offset voltage Voff and output voltage Vout proportional to input voltage V<in>. While in case switches 35a and 35d plus 36a and 36d are kept on during time T2, voltage -Vin is applied to the input side to change the output voltage into Vout-Voff. Accordingly, if switches 35 and 36 are switched alternately, the mean output voltage is secured to reduce the effect of the offset voltage.
JP14777578A 1978-12-01 1978-12-01 Offset voltage compensating circuit for amplifier Pending JPS5575313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14777578A JPS5575313A (en) 1978-12-01 1978-12-01 Offset voltage compensating circuit for amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14777578A JPS5575313A (en) 1978-12-01 1978-12-01 Offset voltage compensating circuit for amplifier

Publications (1)

Publication Number Publication Date
JPS5575313A true JPS5575313A (en) 1980-06-06

Family

ID=15437890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14777578A Pending JPS5575313A (en) 1978-12-01 1978-12-01 Offset voltage compensating circuit for amplifier

Country Status (1)

Country Link
JP (1) JPS5575313A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213513A (en) * 1982-06-07 1983-12-12 Minolta Camera Co Ltd Photoelectric converter
JPS5950612A (en) * 1982-09-16 1984-03-23 Hitachi Ltd Analog-digital converter
JPS62158328U (en) * 1986-03-28 1987-10-07
JPH0658624U (en) * 1993-11-04 1994-08-12 大和製衡株式会社 Analog-to-digital converter
EP1722484A3 (en) * 1999-11-15 2007-06-06 Renesas Technology Corp. Mobile communication apparatus
JP2014187694A (en) * 2013-03-22 2014-10-02 Keithley Instruments Inc Offset removing system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58213513A (en) * 1982-06-07 1983-12-12 Minolta Camera Co Ltd Photoelectric converter
JPS5950612A (en) * 1982-09-16 1984-03-23 Hitachi Ltd Analog-digital converter
JPS62158328U (en) * 1986-03-28 1987-10-07
JPH0658624U (en) * 1993-11-04 1994-08-12 大和製衡株式会社 Analog-to-digital converter
EP1722484A3 (en) * 1999-11-15 2007-06-06 Renesas Technology Corp. Mobile communication apparatus
US7366489B2 (en) 1999-11-15 2008-04-29 Ttpcom Limited Mobile communication apparatus
US7885626B2 (en) 1999-11-15 2011-02-08 Renesas Technology Corp. Mobile communication apparatus
US8107912B2 (en) 1999-11-15 2012-01-31 Renesas Electronics Corporation Mobile communication apparatus
JP2014187694A (en) * 2013-03-22 2014-10-02 Keithley Instruments Inc Offset removing system

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