JPS55159614A - Switched capacitor filter - Google Patents

Switched capacitor filter

Info

Publication number
JPS55159614A
JPS55159614A JP6766679A JP6766679A JPS55159614A JP S55159614 A JPS55159614 A JP S55159614A JP 6766679 A JP6766679 A JP 6766679A JP 6766679 A JP6766679 A JP 6766679A JP S55159614 A JPS55159614 A JP S55159614A
Authority
JP
Japan
Prior art keywords
time
deltat
smaller
path
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
JP6766679A
Other languages
Japanese (ja)
Other versions
JPH0226407B2 (en
Inventor
Norio Ueno
Seiji Kato
Akihiko Ito
Atsushi Iwata
Seiya Shida
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
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Fujitsu Ltd
NEC Corp
Nippon Telegraph and Telephone Corp
Nippon Electric Co 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, NEC Corp, Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Fujitsu Ltd
Priority to JP6766679A priority Critical patent/JPS55159614A/en
Publication of JPS55159614A publication Critical patent/JPS55159614A/en
Publication of JPH0226407B2 publication Critical patent/JPH0226407B2/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 avoid the effect of a through-path substantially, by providing a series switch which turns on only for a time smaller than the sampling period, on the through-path between input and output terminals. CONSTITUTION:A series switch SWS is inserted between an input terminal -vo and a capacitor CF1, which is turned on only for the time sufficiently smaller than the sampling time DELTAT. Further, when the switch SWS is OFF, the voltage of the output terminal v2 can be held to a given value while the next sampling timing. The time DELTAT can be the time introducing the charge corresponding to the input signal and the time DELTAT can be decreased sufficiently. Further, the time when the charge of the capacitor CF1 is leaked with the through-path can be made sufficiently small by selecting this time DELTAT smaller.
JP6766679A 1979-05-31 1979-05-31 Switched capacitor filter Granted JPS55159614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6766679A JPS55159614A (en) 1979-05-31 1979-05-31 Switched capacitor filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6766679A JPS55159614A (en) 1979-05-31 1979-05-31 Switched capacitor filter

Publications (2)

Publication Number Publication Date
JPS55159614A true JPS55159614A (en) 1980-12-11
JPH0226407B2 JPH0226407B2 (en) 1990-06-11

Family

ID=13351546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6766679A Granted JPS55159614A (en) 1979-05-31 1979-05-31 Switched capacitor filter

Country Status (1)

Country Link
JP (1) JPS55159614A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325319A1 (en) 1983-07-13 1985-01-24 Siemens AG, 1000 Berlin und 8000 München Filter circuit consisting of switches and capacitors using a voltage reversing switch
US4508982A (en) * 1982-09-29 1985-04-02 Gte Laboratories Incorporated Floating node stabilizing circuit for a switched-capacitor circuit and filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE JOURNAL OF SOLIDSTATE CIRCUITS=1977 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4508982A (en) * 1982-09-29 1985-04-02 Gte Laboratories Incorporated Floating node stabilizing circuit for a switched-capacitor circuit and filter
DE3325319A1 (en) 1983-07-13 1985-01-24 Siemens AG, 1000 Berlin und 8000 München Filter circuit consisting of switches and capacitors using a voltage reversing switch

Also Published As

Publication number Publication date
JPH0226407B2 (en) 1990-06-11

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