JPS5631232A - Pll circuit - Google Patents

Pll circuit

Info

Publication number
JPS5631232A
JPS5631232A JP10799279A JP10799279A JPS5631232A JP S5631232 A JPS5631232 A JP S5631232A JP 10799279 A JP10799279 A JP 10799279A JP 10799279 A JP10799279 A JP 10799279A JP S5631232 A JPS5631232 A JP S5631232A
Authority
JP
Japan
Prior art keywords
current
frequency
supplied
collector current
resistance
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
JP10799279A
Other languages
Japanese (ja)
Other versions
JPS6340371B2 (en
Inventor
Noriyuki Yamashita
Kazuo Yamagiwa
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP10799279A priority Critical patent/JPS5631232A/en
Publication of JPS5631232A publication Critical patent/JPS5631232A/en
Publication of JPS6340371B2 publication Critical patent/JPS6340371B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To prevent a variable frequency oscillator from being locked to the frequency other than a desired frequency, by controlling the circuit so that the voltage corresponding to the phase difference between the output of the variable frequency oscillator and the reference signal cannot exceed a prescribed range. CONSTITUTION:The collector current of transistor TR T7 is converted to a voltage by resistance RL and diodes D7-D9 and is supplied to hold capacitor C1 through emitter follower TR T34. The terminal voltage of capacitor C1 is supplied from pin terminal 13 to external low-pass filter 14 through TRs T37-T39, resistance R12, and the emitter follower. The output current of filter 14 is supplied to the base of TR T8 after the bias current dependent upon variable resistance RC is added. The collector current of TR T8 is transferred to the collector current of TR T9 through the diode consisting of TRs T40 and T41 and is further transferred to collector current IC (oscillation control current) of TR T1 through TR T<10>. The oscillation frequency of VCO8 is controlled by this control current and is locked to a desired frequency.
JP10799279A 1979-08-24 1979-08-24 Pll circuit Granted JPS5631232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10799279A JPS5631232A (en) 1979-08-24 1979-08-24 Pll circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10799279A JPS5631232A (en) 1979-08-24 1979-08-24 Pll circuit

Publications (2)

Publication Number Publication Date
JPS5631232A true JPS5631232A (en) 1981-03-30
JPS6340371B2 JPS6340371B2 (en) 1988-08-10

Family

ID=14473228

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10799279A Granted JPS5631232A (en) 1979-08-24 1979-08-24 Pll circuit

Country Status (1)

Country Link
JP (1) JPS5631232A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5885624A (en) * 1981-11-16 1983-05-23 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Voltage controlled oscillator
JPS58123232A (en) * 1982-01-08 1983-07-22 リトン・システムズ・インコ−ポレ−テツド Phase locked loop
JPS58127763U (en) * 1982-02-24 1983-08-30 ソニー株式会社 AFC circuit
JPS5934720A (en) * 1982-08-20 1984-02-25 Rohm Co Ltd Voltage control oscillating circuit
JPS5975705A (en) * 1982-10-20 1984-04-28 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Voltage controlled oscillator circuit
JPS60183818A (en) * 1984-03-02 1985-09-19 Oki Electric Ind Co Ltd Oscillating frequency control circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302919A (en) * 1990-10-23 1994-04-12 Seiko Epson Corporation VCO having voltage-to-current converter and PLL using same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152703A (en) * 1974-11-05 1976-05-10 Hitachi Ltd
JPS5181640U (en) * 1974-12-23 1976-06-30
JPS5229149A (en) * 1975-09-01 1977-03-04 Sony Corp Pll
JPS547259A (en) * 1977-06-20 1979-01-19 Hitachi Ltd Voltage control type oscillator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5152703A (en) * 1974-11-05 1976-05-10 Hitachi Ltd
JPS5181640U (en) * 1974-12-23 1976-06-30
JPS5229149A (en) * 1975-09-01 1977-03-04 Sony Corp Pll
JPS547259A (en) * 1977-06-20 1979-01-19 Hitachi Ltd Voltage control type oscillator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5885624A (en) * 1981-11-16 1983-05-23 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Voltage controlled oscillator
JPH0381333B2 (en) * 1981-11-16 1991-12-27 Intaanashonaru Bijinesu Mashiinzu Corp
JPS58123232A (en) * 1982-01-08 1983-07-22 リトン・システムズ・インコ−ポレ−テツド Phase locked loop
JPS58127763U (en) * 1982-02-24 1983-08-30 ソニー株式会社 AFC circuit
JPS5934720A (en) * 1982-08-20 1984-02-25 Rohm Co Ltd Voltage control oscillating circuit
JPS5975705A (en) * 1982-10-20 1984-04-28 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション Voltage controlled oscillator circuit
JPH041527B2 (en) * 1982-10-20 1992-01-13 Intaanashonaru Bijinesu Mashiinzu Corp
JPS60183818A (en) * 1984-03-02 1985-09-19 Oki Electric Ind Co Ltd Oscillating frequency control circuit
JPH0329209B2 (en) * 1984-03-02 1991-04-23 Oki Denki Kogyo Kk

Also Published As

Publication number Publication date
JPS6340371B2 (en) 1988-08-10

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