JPS5591227A - Switched capacitor filter - Google Patents

Switched capacitor filter

Info

Publication number
JPS5591227A
JPS5591227A JP16497778A JP16497778A JPS5591227A JP S5591227 A JPS5591227 A JP S5591227A JP 16497778 A JP16497778 A JP 16497778A JP 16497778 A JP16497778 A JP 16497778A JP S5591227 A JPS5591227 A JP S5591227A
Authority
JP
Japan
Prior art keywords
time
switched capacitor
input
capacitor filter
capacitor
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.)
Granted
Application number
JP16497778A
Other languages
Japanese (ja)
Other versions
JPS6138884B2 (en
Inventor
Norio Ueno
Seiji Kato
Shinpei Matsuzaki
Mitsuo Tsunoishi
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 JP16497778A priority Critical patent/JPS5591227A/en
Publication of JPS5591227A publication Critical patent/JPS5591227A/en
Publication of JPS6138884B2 publication Critical patent/JPS6138884B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
    • H03H19/004—Switched capacitor networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To realize a higher-degree switched capacitor filter in the economical way by giving the multiple passing to the signals in the time shared and repetitive way. CONSTITUTION:The switched capacitor filter operates in time ta and in the state under which CB11, CB21 and CB31 are selected as the integrated capacitors each. And the output of operational amplifier AMP3 at the final stage is charged to switched capacitor Cc. Then integrated capacitors CB12, CB22 and CB32 are selected in time tb, and capacitor Cc holds its charge for time te, and the charge is fed back to input- stage operational amplifier AMP1 for time tf to be then discharged to capacitor CB12. In time tc switched capacitor CA1 is connected to the input of AMP1 and operates with the terminal voltage of CA1 used as the input.
JP16497778A 1978-12-28 1978-12-28 Switched capacitor filter Granted JPS5591227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16497778A JPS5591227A (en) 1978-12-28 1978-12-28 Switched capacitor filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16497778A JPS5591227A (en) 1978-12-28 1978-12-28 Switched capacitor filter

Publications (2)

Publication Number Publication Date
JPS5591227A true JPS5591227A (en) 1980-07-10
JPS6138884B2 JPS6138884B2 (en) 1986-09-01

Family

ID=15803478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16497778A Granted JPS5591227A (en) 1978-12-28 1978-12-28 Switched capacitor filter

Country Status (1)

Country Link
JP (1) JPS5591227A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744319A (en) * 1980-08-29 1982-03-12 Fujitsu Ltd Variable attenuator
JPS57106216A (en) * 1980-12-24 1982-07-02 Fujitsu Ltd Switched capacitor filter
JPS62209913A (en) * 1986-03-10 1987-09-16 Hitachi Ltd Switched capacitor filter
JPS63153907A (en) * 1986-12-18 1988-06-27 Hitachi Ltd Switched capacitor filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63206150A (en) * 1987-02-23 1988-08-25 Sumitomo Electric Ind Ltd Reaction plate for linear motor

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IEEE INTERNATIONAL SOLID-STATE CIRCUITS CONFERENCE=1977 *
IEEE JOURNAL OF SOLID STATE CIRCVITS=1977 *
IEEE TRANSACTIONS ON AUDIO AND ELECTROACDUSTICS=1968 *
IEEE TRANSACTIONS ON AUDIO AND ELECTRONICS=1968 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744319A (en) * 1980-08-29 1982-03-12 Fujitsu Ltd Variable attenuator
JPS6342884B2 (en) * 1980-08-29 1988-08-26 Fujitsu Ltd
JPS57106216A (en) * 1980-12-24 1982-07-02 Fujitsu Ltd Switched capacitor filter
JPS639683B2 (en) * 1980-12-24 1988-03-01 Fujitsu Ltd
JPS62209913A (en) * 1986-03-10 1987-09-16 Hitachi Ltd Switched capacitor filter
JPS63153907A (en) * 1986-12-18 1988-06-27 Hitachi Ltd Switched capacitor filter

Also Published As

Publication number Publication date
JPS6138884B2 (en) 1986-09-01

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