JPS5715508A - Monolithic integrated circuit - Google Patents

Monolithic integrated circuit

Info

Publication number
JPS5715508A
JPS5715508A JP8921880A JP8921880A JPS5715508A JP S5715508 A JPS5715508 A JP S5715508A JP 8921880 A JP8921880 A JP 8921880A JP 8921880 A JP8921880 A JP 8921880A JP S5715508 A JPS5715508 A JP S5715508A
Authority
JP
Japan
Prior art keywords
filter
capacitor
misfetq
turns
power supply
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
JP8921880A
Other languages
Japanese (ja)
Inventor
Noboru Horie
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 JP8921880A priority Critical patent/JPS5715508A/en
Publication of JPS5715508A publication Critical patent/JPS5715508A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the cost and to achieve high density mounting, by using a switched capacitor filter formed in a monolithic IC as a power supply ripple rejecting filter.
CONSTITUTION: A bias voltage being an input voltage is applied to a capacitor C1 for charging by a switched capacitor filter 5, when a MISFETQ1 turns on, and the input voltage stored in this capacitor C1 is supplied to an operational amplifying circuit OP when a MISFETQ2 turns on. The power supply ripple rejecting operation is made by reason that the filter characteristics are determined by the capacitance ratio C1/C2 and the pulse signal frequency (fs) and the attenuated frequency band is a low frequency.
COPYRIGHT: (C)1982,JPO&Japio
JP8921880A 1980-07-02 1980-07-02 Monolithic integrated circuit Pending JPS5715508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8921880A JPS5715508A (en) 1980-07-02 1980-07-02 Monolithic integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8921880A JPS5715508A (en) 1980-07-02 1980-07-02 Monolithic integrated circuit

Publications (1)

Publication Number Publication Date
JPS5715508A true JPS5715508A (en) 1982-01-26

Family

ID=13964577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8921880A Pending JPS5715508A (en) 1980-07-02 1980-07-02 Monolithic integrated circuit

Country Status (1)

Country Link
JP (1) JPS5715508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60158706A (en) * 1984-01-29 1985-08-20 Rohm Co Ltd Bias power supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60158706A (en) * 1984-01-29 1985-08-20 Rohm Co Ltd Bias power supply

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