KR910017776A - 위상동기회로 - Google Patents

위상동기회로 Download PDF

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Publication number
KR910017776A
KR910017776A KR1019910003797A KR910003797A KR910017776A KR 910017776 A KR910017776 A KR 910017776A KR 1019910003797 A KR1019910003797 A KR 1019910003797A KR 910003797 A KR910003797 A KR 910003797A KR 910017776 A KR910017776 A KR 910017776A
Authority
KR
South Korea
Prior art keywords
phase
controlled oscillators
voltage
frequency
voltage controlled
Prior art date
Application number
KR1019910003797A
Other languages
English (en)
Other versions
KR940001724B1 (ko
Inventor
유이치 미야자와
Original Assignee
아오이 죠이치
가부시키가이샤 도시바
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 아오이 죠이치, 가부시키가이샤 도시바 filed Critical 아오이 죠이치
Publication of KR910017776A publication Critical patent/KR910017776A/ko
Application granted granted Critical
Publication of KR940001724B1 publication Critical patent/KR940001724B1/ko

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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
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/187—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop
    • 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
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
    • H03K3/354—Astable circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
    • H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0995—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator comprising a ring oscillator
    • H03L7/0997—Controlling the number of delay elements connected in series in the ring oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Dram (AREA)

Abstract

내용 없음

Description

위상동기회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 제1실시예의 블럭구성도, 제4도는 제3도에 나타낸 단수선택기의 동작을 나타낸 타이밍챠트, 제5도는 본 발명의 제2실시예의 블럭 구성도.

Claims (2)

  1. 적어도 위상비교기(1)와 상기 위상비교기(1)에 접속되는 전압 제어 발진기(4a,4b)를 구비하고, 상기 전압 제어 발진기(4a,4b)의 발진출력의 주파수 및 위상과 외부로부터 입력되는 기준신호의 주파수 및 위상을 상기 위상비교기(1)에 있어서 비교하며, 그 비교결과를 상기 전압 제어 발진기(4a,4b)로 피드백시켜 상기 전압 제어 발진기(4a,4b)의 발진출력의 위상과 주파수를 상기 기준신호와 일치시키는 위상동기회로에 있어서, 상기 전압 제어 발진기(4a,4b)가 링오실레이터(39a,39b)를 포함하고 있고, 그 링오실레이터의 단수의 선택을 상기 전압 제어 발진기(4a,4b)로 입력되는 제어전압에 기초해서 행하도록 된 것을 특징으로 하는 위상동기회로.
  2. 제1항에 있어서 , 위상동기의 검출후에 상기 링오실레이터의 단수선택 상태를 고정시키는 동기검출회로(18)를 더 구비한 것을 특징으로 하는 위상동기회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910003797A 1990-03-09 1991-03-09 위상동기회로 KR940001724B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2-56,432 1990-03-09
JP02-056432 1990-03-09
JP2056432A JPH0799807B2 (ja) 1990-03-09 1990-03-09 位相同期回路

Publications (2)

Publication Number Publication Date
KR910017776A true KR910017776A (ko) 1991-11-05
KR940001724B1 KR940001724B1 (ko) 1994-03-05

Family

ID=13026931

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910003797A KR940001724B1 (ko) 1990-03-09 1991-03-09 위상동기회로

Country Status (3)

Country Link
US (1) US5075640A (ko)
JP (1) JPH0799807B2 (ko)
KR (1) KR940001724B1 (ko)

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Also Published As

Publication number Publication date
JPH03259619A (ja) 1991-11-19
KR940001724B1 (ko) 1994-03-05
JPH0799807B2 (ja) 1995-10-25
US5075640A (en) 1991-12-24

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