JPS52124847A - Charge pump circuit of digital phase synchronous oscillator - Google Patents

Charge pump circuit of digital phase synchronous oscillator

Info

Publication number
JPS52124847A
JPS52124847A JP4145676A JP4145676A JPS52124847A JP S52124847 A JPS52124847 A JP S52124847A JP 4145676 A JP4145676 A JP 4145676A JP 4145676 A JP4145676 A JP 4145676A JP S52124847 A JPS52124847 A JP S52124847A
Authority
JP
Japan
Prior art keywords
charge pump
pump circuit
digital phase
phase synchronous
synchronous oscillator
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
JP4145676A
Other languages
Japanese (ja)
Inventor
Kuninosuke Ihira
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 JP4145676A priority Critical patent/JPS52124847A/en
Publication of JPS52124847A publication Critical patent/JPS52124847A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations
    • H03D13/007—Circuits for comparing the phase or frequency of two mutually-independent oscillations by analog multiplication of the oscillations or by performing a similar analog operation on the oscillations
    • H03D13/008—Circuits for comparing the phase or frequency of two mutually-independent oscillations by analog multiplication of the oscillations or by performing a similar analog operation on the oscillations using transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To economize the oscillator by reducing the jitters in use of the high speed switching element for the charge pump.
JP4145676A 1976-04-12 1976-04-12 Charge pump circuit of digital phase synchronous oscillator Pending JPS52124847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4145676A JPS52124847A (en) 1976-04-12 1976-04-12 Charge pump circuit of digital phase synchronous oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4145676A JPS52124847A (en) 1976-04-12 1976-04-12 Charge pump circuit of digital phase synchronous oscillator

Publications (1)

Publication Number Publication Date
JPS52124847A true JPS52124847A (en) 1977-10-20

Family

ID=12608864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4145676A Pending JPS52124847A (en) 1976-04-12 1976-04-12 Charge pump circuit of digital phase synchronous oscillator

Country Status (1)

Country Link
JP (1) JPS52124847A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639633A (en) * 1979-09-06 1981-04-15 Nippon Gakki Seizo Kk Loop filter circuit in phase-locked loop circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5639633A (en) * 1979-09-06 1981-04-15 Nippon Gakki Seizo Kk Loop filter circuit in phase-locked loop circuit

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