JPS57202106A - Oscillation circuit - Google Patents

Oscillation circuit

Info

Publication number
JPS57202106A
JPS57202106A JP8658281A JP8658281A JPS57202106A JP S57202106 A JPS57202106 A JP S57202106A JP 8658281 A JP8658281 A JP 8658281A JP 8658281 A JP8658281 A JP 8658281A JP S57202106 A JPS57202106 A JP S57202106A
Authority
JP
Japan
Prior art keywords
type
power supply
voltage
oscillation circuit
fet6
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
JP8658281A
Other languages
Japanese (ja)
Other versions
JPS6336681B2 (en
Inventor
Yoichi Miyagawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8658281A priority Critical patent/JPS57202106A/en
Publication of JPS57202106A publication Critical patent/JPS57202106A/en
Publication of JPS6336681B2 publication Critical patent/JPS6336681B2/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)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

PURPOSE:To make the oscillation stable, by designating in such a way that the (gm) when an external power supply is applied to an oscillation circuit at the application of power supply is not different from the (gm) when the circuit is driven with a regulated power supply. CONSTITUTION:When a power is supplied, a high level voltage is given to a voltage control terminal 12, an N type FET10 turns on, and a P type FET5 and an N type FET6 turn off, and a power supply voltage for a P type FET1 and an N type FET2 is an external voltage (VDD-VSS). In this case, current feedback is given with resistors 3 and 4 and the increase in the (gm) of an inverter operated as an oscillation circuit is less. When the oscillation circuit is at a normal oscillation state and a low level voltage is applied to the voltage control terminal 12, and when the N type FET10 turns off and the P type FET5 and the N type FET6 turn on, a voltage applied to the FET2 comes from an output of a regulated power supply 11. Although the voltage is lower than that at the application of power supply, since the P type FET5 and the N type FET6 turn on, and the (gm) of the inverter operated as the oscillation circuit can be made equal to the (gm) at the application of power supply.
JP8658281A 1981-06-05 1981-06-05 Oscillation circuit Granted JPS57202106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8658281A JPS57202106A (en) 1981-06-05 1981-06-05 Oscillation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8658281A JPS57202106A (en) 1981-06-05 1981-06-05 Oscillation circuit

Publications (2)

Publication Number Publication Date
JPS57202106A true JPS57202106A (en) 1982-12-10
JPS6336681B2 JPS6336681B2 (en) 1988-07-21

Family

ID=13890994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8658281A Granted JPS57202106A (en) 1981-06-05 1981-06-05 Oscillation circuit

Country Status (1)

Country Link
JP (1) JPS57202106A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956618A (en) * 1989-04-07 1990-09-11 Vlsi Technology, Inc. Start-up circuit for low power MOS crystal oscillator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158840A (en) * 1978-06-05 1979-12-15 Sanyo Electric Co Ltd Oscillation circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158840A (en) * 1978-06-05 1979-12-15 Sanyo Electric Co Ltd Oscillation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956618A (en) * 1989-04-07 1990-09-11 Vlsi Technology, Inc. Start-up circuit for low power MOS crystal oscillator

Also Published As

Publication number Publication date
JPS6336681B2 (en) 1988-07-21

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