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JPS5552604A - Oscillator circuit - Google Patents

Oscillator circuit

Info

Publication number
JPS5552604A
JPS5552604A JP12489878A JP12489878A JPS5552604A JP S5552604 A JPS5552604 A JP S5552604A JP 12489878 A JP12489878 A JP 12489878A JP 12489878 A JP12489878 A JP 12489878A JP S5552604 A JPS5552604 A JP S5552604A
Authority
JP
Japan
Prior art keywords
fet
constant
circuit
current
current source
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
JP12489878A
Other languages
Japanese (ja)
Other versions
JPS6128249B2 (en
Inventor
Toshiyuki Misawa
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP12489878A priority Critical patent/JPS5552604A/en
Publication of JPS5552604A publication Critical patent/JPS5552604A/en
Publication of JPS6128249B2 publication Critical patent/JPS6128249B2/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 make power consumption low by driving the constant-current source in the amplification stage by the consumption current of a frequency divider circuit in the oscillator circuit using FETs. CONSTITUTION:The get bias of FET 3 which constitutes a constant-current source by utilizing a frequency division current flowing to a frequency divider circuit cascaded to an oscillator circuit is determined. Since FET 3 and FET 4 are formed on the same chip and have approximately equal threshold voltages, FET 3 operates always in a saturation state and becomes a constant-current source if the gate voltage is fixed. The gate voltage is fixed in respect to time by the action of capacitor 5. Unstability of oscillation and frequency division at a power supply time is resolved by a power on reset circuit which turns on the constant-current circuit simultaneously with resetting the frequency divider circuit at a power suply time.
JP12489878A 1978-10-11 1978-10-11 Oscillator circuit Granted JPS5552604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12489878A JPS5552604A (en) 1978-10-11 1978-10-11 Oscillator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12489878A JPS5552604A (en) 1978-10-11 1978-10-11 Oscillator circuit

Publications (2)

Publication Number Publication Date
JPS5552604A true JPS5552604A (en) 1980-04-17
JPS6128249B2 JPS6128249B2 (en) 1986-06-30

Family

ID=14896826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12489878A Granted JPS5552604A (en) 1978-10-11 1978-10-11 Oscillator circuit

Country Status (1)

Country Link
JP (1) JPS5552604A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210054A (en) * 1975-07-14 1977-01-26 Mitsubishi Electric Corp Oscillating circuit
JPS5216151A (en) * 1975-07-29 1977-02-07 Seiko Instr & Electronics Ltd Crystal oscillator circuit device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210054A (en) * 1975-07-14 1977-01-26 Mitsubishi Electric Corp Oscillating circuit
JPS5216151A (en) * 1975-07-29 1977-02-07 Seiko Instr & Electronics Ltd Crystal oscillator circuit device

Also Published As

Publication number Publication date
JPS6128249B2 (en) 1986-06-30

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