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EP1894299A1 - Oscillateur integre a relaxation commande en tension et procede d'oscillation commandee en tension - Google Patents

Oscillateur integre a relaxation commande en tension et procede d'oscillation commandee en tension

Info

Publication number
EP1894299A1
EP1894299A1 EP05760643A EP05760643A EP1894299A1 EP 1894299 A1 EP1894299 A1 EP 1894299A1 EP 05760643 A EP05760643 A EP 05760643A EP 05760643 A EP05760643 A EP 05760643A EP 1894299 A1 EP1894299 A1 EP 1894299A1
Authority
EP
European Patent Office
Prior art keywords
switch
terminal
coupled
input
current
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.)
Withdrawn
Application number
EP05760643A
Other languages
German (de)
English (en)
Inventor
Liviu Chiaburu
Robert Dixon
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.)
NXP USA Inc
Original Assignee
Freescale Semiconductor Inc
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 Freescale Semiconductor Inc filed Critical Freescale Semiconductor Inc
Publication of EP1894299A1 publication Critical patent/EP1894299A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
    • H03K3/03—Astable circuits
    • H03K3/0315—Ring oscillators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/01—Details
    • H03K3/011—Modifications of generator to compensate for variations in physical values, e.g. voltage, temperature

Definitions

  • the first switch is configured to couple the second drain terminal to the third reference potential when the second switch decouples the first terminal of the second switch from the second terminal of the second switch, and decouple the second drain terminal from the third reference potential when the second switch couples the first terminal of the second switch with the second terminal of the second switch.
  • the reference current generating step comprises converting a first reference voltage to the reference current via a current mirror.
  • the reference current has a frequency based on a predetermined time reference, and the clock signal generating step comprises periodically charging/discharging the second capacitance at the frequency of the reference current.
  • the clock signal generating step comprises generating the clock signal based on the second capacitance (Cx), a first reference voltage (V I N), and the reference current (IR E F)-
  • the clock signal generating step comprises generating the clock signal having the period (T) such that
  • T I X (T 0 Z VREF) X (CX Z CY) Z IREF .

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

L'invention concerne un procédé et un appareil destinés à une oscillation intégrée à relaxation commandée en tension. Un circuit oscillatoire, destiné à transmettre un signal d'horloge, est utilisé, lequel comprend une source de courant (12) comportant une première entrée configurée pour recevoir un premier potentiel de référence et une seconde entrée configurée pour recevoir un signal présentant une période prédéterminée, ainsi qu'un oscillateur commandé en tension (VCO) (14) relié à la source de courant. La source de courant comprend une première capacité (CY) et est configurée pour générer un courant de référence directement proportionnel à la première capacité. L'oscillateur VCO comporte une entrée configurée pour recevoir le courant de référence. L'oscillateur VCO comprend une seconde capacité (CX) et est configuré pour générer le signal d'horloge présentant une période directement proportionnelle au rapport de la seconde capacité sur la première capacité.
EP05760643A 2005-06-15 2005-06-15 Oscillateur integre a relaxation commande en tension et procede d'oscillation commandee en tension Withdrawn EP1894299A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/021089 WO2007001255A1 (fr) 2005-06-15 2005-06-15 Oscillateur integre a relaxation commande en tension et procede d'oscillation commandee en tension

Publications (1)

Publication Number Publication Date
EP1894299A1 true EP1894299A1 (fr) 2008-03-05

Family

ID=35708680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05760643A Withdrawn EP1894299A1 (fr) 2005-06-15 2005-06-15 Oscillateur integre a relaxation commande en tension et procede d'oscillation commandee en tension

Country Status (3)

Country Link
EP (1) EP1894299A1 (fr)
JP (1) JP4902648B2 (fr)
WO (1) WO2007001255A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5515708B2 (ja) * 2009-12-11 2014-06-11 富士通株式会社 バイアス回路及びそれを有する増幅回路
CN107241083B (zh) * 2017-06-05 2020-08-04 上海爱信诺航芯电子科技有限公司 一种高精度自偏置时钟电路及相应的自偏置电路
DE102018115082A1 (de) 2018-06-22 2019-12-24 Mtu Friedrichshafen Gmbh Verfahren zum Betreiben einer Kolbenmaschine und eine Kolbenmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831113A (en) * 1973-06-01 1974-08-20 Rca Corp Relaxation oscillator
US3904988A (en) * 1974-09-11 1975-09-09 Motorola Inc CMOS voltage controlled oscillator
US4146849A (en) * 1977-01-31 1979-03-27 Tokyo Shibaura Electric Co., Ltd. Voltage controlled oscillator
US4321561A (en) * 1979-09-28 1982-03-23 Honeywell Inc. Switch operated capacitive oscillator apparatus
JPS60109332A (ja) * 1983-11-17 1985-06-14 Toshiba Corp 発振回路
JP3584552B2 (ja) * 1994-06-06 2004-11-04 セイコーエプソン株式会社 発振装置、表示データ処理装置、マトリックス型表示装置、発振信号生成方法及び表示データ処理方法
US5784072A (en) * 1994-06-06 1998-07-21 Seiko Epson Corporation Oscillation device, display data processing device, matrix-type display device, oscillation signal generation method, and display data processing method
JP3176016B2 (ja) * 1995-01-05 2001-06-11 株式会社東芝 不揮発性半導体記憶装置
JP3647147B2 (ja) * 1996-06-28 2005-05-11 富士通株式会社 発振回路とそれを利用したｐｌｌ回路
US5969513A (en) * 1998-03-24 1999-10-19 Volterra Semiconductor Corporation Switched capacitor current source for use in switching regulators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007001255A1 *

Also Published As

Publication number Publication date
JP4902648B2 (ja) 2012-03-21
WO2007001255A1 (fr) 2007-01-04
JP2008544641A (ja) 2008-12-04

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 20080115

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CHIABURU, LIVIU

Inventor name: DIXON, ROBERT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20090203

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140103