JPS57203314A - Switched capacitor filter integrated circuit - Google Patents

Switched capacitor filter integrated circuit

Info

Publication number
JPS57203314A
JPS57203314A JP8860881A JP8860881A JPS57203314A JP S57203314 A JPS57203314 A JP S57203314A JP 8860881 A JP8860881 A JP 8860881A JP 8860881 A JP8860881 A JP 8860881A JP S57203314 A JPS57203314 A JP S57203314A
Authority
JP
Japan
Prior art keywords
switched capacitor
capacitor filter
converted
integrated circuit
filter integrated
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
JP8860881A
Other languages
Japanese (ja)
Inventor
Toshiyuki Misawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP8860881A priority Critical patent/JPS57203314A/en
Publication of JPS57203314A publication Critical patent/JPS57203314A/en
Pending 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 small size and a low cost of a circuit system, by forming an LPF for elimination of the folded noise within the same IC chip of a switched capacitor filter. CONSTITUTION:A switched capacitor filter SCF302 consisting of an operational amplifier, a capacitor and an analog switch is converted into a monolithic IC. In addition, an LPF303 which eliminates the folded noise caused by sampling the input signal 312 on a time axis is formed within the same chip of the above- mentioned switched capacitor filter SCF which is converted into an IC. The LPF303 consists of a resistant and a capacitor which are converted into an IC respectively. In such way, a small size and a low cost are realized for a circuit system.
JP8860881A 1981-06-09 1981-06-09 Switched capacitor filter integrated circuit Pending JPS57203314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8860881A JPS57203314A (en) 1981-06-09 1981-06-09 Switched capacitor filter integrated circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8860881A JPS57203314A (en) 1981-06-09 1981-06-09 Switched capacitor filter integrated circuit

Publications (1)

Publication Number Publication Date
JPS57203314A true JPS57203314A (en) 1982-12-13

Family

ID=13947519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8860881A Pending JPS57203314A (en) 1981-06-09 1981-06-09 Switched capacitor filter integrated circuit

Country Status (1)

Country Link
JP (1) JPS57203314A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419037A2 (en) * 1989-08-29 1991-03-27 Delco Electronics Corporation Detector circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419037A2 (en) * 1989-08-29 1991-03-27 Delco Electronics Corporation Detector circuit

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