JPS57109406A - Oscillating circuit - Google Patents

Oscillating circuit

Info

Publication number
JPS57109406A
JPS57109406A JP18880680A JP18880680A JPS57109406A JP S57109406 A JPS57109406 A JP S57109406A JP 18880680 A JP18880680 A JP 18880680A JP 18880680 A JP18880680 A JP 18880680A JP S57109406 A JPS57109406 A JP S57109406A
Authority
JP
Japan
Prior art keywords
oscillation
switching
amplifier
oscillation frequency
gate
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
JP18880680A
Other languages
Japanese (ja)
Other versions
JPS6230524B2 (en
Inventor
Kazuharu Nishitani
Hiroshi Kobayashi
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 JP18880680A priority Critical patent/JPS57109406A/en
Publication of JPS57109406A publication Critical patent/JPS57109406A/en
Publication of JPS6230524B2 publication Critical patent/JPS6230524B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/364—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier comprising field effect transistors

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To reduce the number of circuit elements and to reduce the current consumption, by using plural switching elements for switching an oscillation frequency to switch the oscillation frequency in an IC which outputs an oscillation signal of >=2 kinds of oscillation frequencies. CONSTITUTION:An inversion amplifier 21 outputs an oscillation frequency, which is controlled by transmission gates 22 and 23 using switching elements for switching the oscillation frequency, to an output terminal 20. The gate 22 or 23 is selected in accordance with a control signal inputted to a switching control terminal 15; and when the gate 22 is selected, a feedback resistance R2, capacitors Cs 3 and 4, an inversion amplifier 6 for oscillation, and a piezooscillator 11 consillating circuit. When the gate 23 is selected, the R2, Cs3 and 4, a piezooscillator 5, and the amplifier 5 constitute the oscillating circuit. Control signals of gates 22 and 23 are set to levels higher than the power source voltage of the amplifier 6 to lower the oscillation start voltage.
JP18880680A 1980-12-25 1980-12-25 Oscillating circuit Granted JPS57109406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18880680A JPS57109406A (en) 1980-12-25 1980-12-25 Oscillating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18880680A JPS57109406A (en) 1980-12-25 1980-12-25 Oscillating circuit

Publications (2)

Publication Number Publication Date
JPS57109406A true JPS57109406A (en) 1982-07-07
JPS6230524B2 JPS6230524B2 (en) 1987-07-02

Family

ID=16230123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18880680A Granted JPS57109406A (en) 1980-12-25 1980-12-25 Oscillating circuit

Country Status (1)

Country Link
JP (1) JPS57109406A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999805A (en) * 1982-11-29 1984-06-08 Toshiba Corp Integrated circuit for oscillator
JPH02184103A (en) * 1989-01-11 1990-07-18 Hitachi Ltd Crystal oscillation circuit
JPH0528126U (en) * 1991-09-17 1993-04-09 華邦電子股▲分▼有限公司 High frequency clock generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124162A (en) * 1974-08-22 1976-02-26 Nippon Electric Co ONDOHOSHOGATAATSUDENHATSUSHINKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5124162A (en) * 1974-08-22 1976-02-26 Nippon Electric Co ONDOHOSHOGATAATSUDENHATSUSHINKI

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999805A (en) * 1982-11-29 1984-06-08 Toshiba Corp Integrated circuit for oscillator
JPH02184103A (en) * 1989-01-11 1990-07-18 Hitachi Ltd Crystal oscillation circuit
JPH0528126U (en) * 1991-09-17 1993-04-09 華邦電子股▲分▼有限公司 High frequency clock generator

Also Published As

Publication number Publication date
JPS6230524B2 (en) 1987-07-02

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