JPS5570131A - Phase comparator circuit - Google Patents

Phase comparator circuit

Info

Publication number
JPS5570131A
JPS5570131A JP14461178A JP14461178A JPS5570131A JP S5570131 A JPS5570131 A JP S5570131A JP 14461178 A JP14461178 A JP 14461178A JP 14461178 A JP14461178 A JP 14461178A JP S5570131 A JPS5570131 A JP S5570131A
Authority
JP
Japan
Prior art keywords
input
signal
output
type
phase
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
JP14461178A
Other languages
Japanese (ja)
Other versions
JPS6212696B2 (en
Inventor
Yasoji Suzuki
Nobuyuki Kamimaru
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14461178A priority Critical patent/JPS5570131A/en
Priority to US06/096,056 priority patent/US4291274A/en
Publication of JPS5570131A publication Critical patent/JPS5570131A/en
Publication of JPS6212696B2 publication Critical patent/JPS6212696B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manipulation Of Pulses (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Measuring Phase Differences (AREA)

Abstract

PURPOSE: To decrease the number of elements and thus to simplify the circuit constitution by omitting the inverter circuit for the signals to be delivered to the change pump of the phase comparator circuit used to the PLL circuit.
CONSTITUTION: The priority-type 1st FF22 using reference signal Ref as the input of one side plus priority-type 2nd FF21 using signal Ref as well as the output of FF22 as the input are installed to phase comparator circuit 20 which detects the phase difference between the reference signal and the input signal which constitute the PLL circuit. In addition, priority-type 3rd FF24 using input signal Sig for comparison of the phase with Ref as the input of one side is provided along with 4th FF23 using signal Sig as the input of one side plus the output of FF24 used as the input of other side respectively. The state of both reverse P and reverse N are detected, and the outout is applied to the other input of FF22 and 24. For this purpose, NOR gate 25 is provided. Then the phase is compared between signals Ref and Sig, and reverse P of the output of FF21 plus output N of FF23 are supplied to P- and N-type MOSFET27 and 28 of charge pump 26.
COPYRIGHT: (C)1980,JPO&Japio
JP14461178A 1978-11-22 1978-11-22 Phase comparator circuit Granted JPS5570131A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14461178A JPS5570131A (en) 1978-11-22 1978-11-22 Phase comparator circuit
US06/096,056 US4291274A (en) 1978-11-22 1979-11-20 Phase detector circuit using logic gates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14461178A JPS5570131A (en) 1978-11-22 1978-11-22 Phase comparator circuit

Publications (2)

Publication Number Publication Date
JPS5570131A true JPS5570131A (en) 1980-05-27
JPS6212696B2 JPS6212696B2 (en) 1987-03-20

Family

ID=15366043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14461178A Granted JPS5570131A (en) 1978-11-22 1978-11-22 Phase comparator circuit

Country Status (1)

Country Link
JP (1) JPS5570131A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104126A (en) * 1979-02-05 1980-08-09 Toshiba Corp Phase comparison circuit
DE3022746A1 (en) * 1979-06-19 1981-01-08 Tokyo Shibaura Electric Co DIGITAL PHASE COMPARATOR CIRCUIT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55104126A (en) * 1979-02-05 1980-08-09 Toshiba Corp Phase comparison circuit
DE3022746A1 (en) * 1979-06-19 1981-01-08 Tokyo Shibaura Electric Co DIGITAL PHASE COMPARATOR CIRCUIT

Also Published As

Publication number Publication date
JPS6212696B2 (en) 1987-03-20

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