JPS5714973A - Semiconductor integrated circuit - Google Patents

Semiconductor integrated circuit

Info

Publication number
JPS5714973A
JPS5714973A JP9023580A JP9023580A JPS5714973A JP S5714973 A JPS5714973 A JP S5714973A JP 9023580 A JP9023580 A JP 9023580A JP 9023580 A JP9023580 A JP 9023580A JP S5714973 A JPS5714973 A JP S5714973A
Authority
JP
Japan
Prior art keywords
capacity
diffusion layer
output
high frequency
power source
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
JP9023580A
Other languages
Japanese (ja)
Inventor
Kazuhiro Kobayashi
Akihiko Ito
Kunihiko Goto
Tadahiro Saito
Hisami Tanaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9023580A priority Critical patent/JPS5714973A/en
Publication of JPS5714973A publication Critical patent/JPS5714973A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor
    • G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor for integration or differentiation; for forming integrals
    • G06G7/184—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor for integration or differentiation; for forming integrals using capacitive elements
    • G06G7/186—Arrangements for performing computing operations, e.g. operational amplifiers specially adapted therefor for integration or differentiation; for forming integrals using capacitive elements using an operational amplifier comprising a capacitor or a resistor in the feedback loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To improve the high frequency noise properties for an IC in which an integrator consists of an operational amplifier plus a capacity between a metallic electrode and a diffusion layer, by providing a supply voltage elimination ratio improving circuit. CONSTITUTION:An integrator consists mainly of an operation a amplifier OP, a capacity CB that feeds back the output of the OP and a resistance. The feedback capacity CB uses the area between a metallic electrode opposite to a diffusion layer via an insulated film and the diffusion layer. As a semiconductor substrate is connected to a power source, the high frequency noise VS of the power source E emerges at the output through a capacity Cj formed between the substrate and the diffusion layer. To remove this effect, an inverter INU of gain G which receives a supply of the noise VS is provided along with a supply voltage elimination ratio improving circuit consisting of capacity CC and connected between the output terminal of the inverter and the output terminal of the operational amplifier with a capacity value of 1/G.
JP9023580A 1980-07-02 1980-07-02 Semiconductor integrated circuit Pending JPS5714973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9023580A JPS5714973A (en) 1980-07-02 1980-07-02 Semiconductor integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9023580A JPS5714973A (en) 1980-07-02 1980-07-02 Semiconductor integrated circuit

Publications (1)

Publication Number Publication Date
JPS5714973A true JPS5714973A (en) 1982-01-26

Family

ID=13992823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9023580A Pending JPS5714973A (en) 1980-07-02 1980-07-02 Semiconductor integrated circuit

Country Status (1)

Country Link
JP (1) JPS5714973A (en)

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