JPS6467032A - Pll circuit device - Google Patents

Pll circuit device

Info

Publication number
JPS6467032A
JPS6467032A JP62222986A JP22298687A JPS6467032A JP S6467032 A JPS6467032 A JP S6467032A JP 62222986 A JP62222986 A JP 62222986A JP 22298687 A JP22298687 A JP 22298687A JP S6467032 A JPS6467032 A JP S6467032A
Authority
JP
Japan
Prior art keywords
controlled oscillator
voltage controlled
change
loop filter
over switch
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
JP62222986A
Other languages
Japanese (ja)
Inventor
Masuyuki Takeda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62222986A priority Critical patent/JPS6467032A/en
Publication of JPS6467032A publication Critical patent/JPS6467032A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To execute adjustment respectively to more than two types of frequencies by composing a feedback group of a phase comparator, a loop filter and a voltage controlled oscillator and providing a change-over switch, plural setting devices and a switching controller. CONSTITUTION:A phase comparator 11, a loop filter 12 and a voltage controlled oscillator 13 constitute the feedback group and the phase comparator 11 supplies a phase error signal between an external input signal and an output signal from the voltage controlled oscillator 13. The loop filter 12 is the one made to add a control signal corresponding to it to the voltage controlled oscillator 13 and further, is provided with a change-over switch 16, setting devices 17 and 18 and a switching controller 15. By depending on a mode signal added to the switching controller, a desired one out of the setting devices 17 and 18 is selectively connected to the voltage controlled oscillator 13 through the change-over switch 16. Thus, a frequency adjustment can be easily and surely executed.
JP62222986A 1987-09-08 1987-09-08 Pll circuit device Pending JPS6467032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62222986A JPS6467032A (en) 1987-09-08 1987-09-08 Pll circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222986A JPS6467032A (en) 1987-09-08 1987-09-08 Pll circuit device

Publications (1)

Publication Number Publication Date
JPS6467032A true JPS6467032A (en) 1989-03-13

Family

ID=16791010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222986A Pending JPS6467032A (en) 1987-09-08 1987-09-08 Pll circuit device

Country Status (1)

Country Link
JP (1) JPS6467032A (en)

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