JPS5799816A - Switched capacitor filter - Google Patents

Switched capacitor filter

Info

Publication number
JPS5799816A
JPS5799816A JP17628380A JP17628380A JPS5799816A JP S5799816 A JPS5799816 A JP S5799816A JP 17628380 A JP17628380 A JP 17628380A JP 17628380 A JP17628380 A JP 17628380A JP S5799816 A JPS5799816 A JP S5799816A
Authority
JP
Japan
Prior art keywords
capacitor
resistance
external
voltage
resistances
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
JP17628380A
Other languages
Japanese (ja)
Inventor
Seiji Kato
Norio Ueno
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 JP17628380A priority Critical patent/JPS5799816A/en
Publication of JPS5799816A publication Critical patent/JPS5799816A/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 obtain an optional filter characteristic easily by an external resistance or capacitor, by connecting a voltage dividing means to a capacitor for samping a signal charge to apply a divided voltage. CONSTITUTION:A phase inverting integrator consists of resistances R1 and R2, switches S1a and S1b, a sampling capacitor CA1, an integrating capacitor CB1, and an operational amplifier OPA1. A voltage divided by resistances R1 and R2 is applied to the capacitor CA1. In this case, the resistance R2 is external, and the coefficient is set by selecting R1/R2. The external resistance R2 is made high by making the resistance R1 high not only to facilitate adjustment but also to reduce the loss.
JP17628380A 1980-12-13 1980-12-13 Switched capacitor filter Pending JPS5799816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17628380A JPS5799816A (en) 1980-12-13 1980-12-13 Switched capacitor filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17628380A JPS5799816A (en) 1980-12-13 1980-12-13 Switched capacitor filter

Publications (1)

Publication Number Publication Date
JPS5799816A true JPS5799816A (en) 1982-06-21

Family

ID=16010868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17628380A Pending JPS5799816A (en) 1980-12-13 1980-12-13 Switched capacitor filter

Country Status (1)

Country Link
JP (1) JPS5799816A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125909A (en) * 1982-01-21 1983-07-27 Nec Corp Switched capacitor filter
JPS63299406A (en) * 1987-05-29 1988-12-06 Asahi Kasei Micro Syst Kk Switched capacitor filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58125909A (en) * 1982-01-21 1983-07-27 Nec Corp Switched capacitor filter
JPS63299406A (en) * 1987-05-29 1988-12-06 Asahi Kasei Micro Syst Kk Switched capacitor filter

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