CH648180GA3 - - Google Patents

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Publication number
CH648180GA3
CH648180GA3 CH464881A CH464881A CH648180GA3 CH 648180G A3 CH648180G A3 CH 648180GA3 CH 464881 A CH464881 A CH 464881A CH 464881 A CH464881 A CH 464881A CH 648180G A3 CH648180G A3 CH 648180GA3
Authority
CH
Switzerland
Prior art keywords
oscillator
fet
gates
fet pair
current
Prior art date
Application number
CH464881A
Other languages
German (de)
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 filed Critical
Publication of CH648180GA3 publication Critical patent/CH648180GA3/de

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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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/353—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of field-effect transistors with internal or external positive feedback
    • H03K3/354—Astable circuits
    • H03K3/3545—Stabilisation of output, e.g. using crystal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L3/00—Starting of generators

Abstract

A very low current Pierce oscillator has two pairs of complementary field-effect transistors (FET's) and a two-terminal quartz crystal. The gates of the first complementary FET pair are coupled through individual capacitors to one terminal of the quartz crystal, their drains being connected together and to the other quartz crystal terminal. Current flow through the crystal oscillator is minimized by a novel oscillator bias loop connected between the gates of the first FET pair. Amplification is provided by the second FET pair which have a commonly connected drain comprising the oscillator output node. The gates of the second FET pair are each connected to a respective one of the gates of the first FET pair. The oscillator bias loop minimizes the source-to-drain current through the first FET pair by reducing the P-channel FET gate voltage in response to the source-to-drain current. The oscillator bias loop assures reliable start-up by permitting the oscillation of the source-to-drain current to increase freely to some large magnitude and then operates to reduce the amplitude of the oscillation and also the dc bias level of the current to an equilibrium condition. Means are provided for preventing elements within the oscillator bias loop from overloading the oscillator or otherwise preventing the initiation of oscillation at start-up.
CH464881A 1980-07-17 1981-07-15 CH648180GA3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/169,554 US4360789A (en) 1980-07-17 1980-07-17 Very low current pierce oscillator

Publications (1)

Publication Number Publication Date
CH648180GA3 true CH648180GA3 (en) 1985-03-15

Family

ID=22616186

Family Applications (1)

Application Number Title Priority Date Filing Date
CH464881A CH648180GA3 (en) 1980-07-17 1981-07-15

Country Status (6)

Country Link
US (1) US4360789A (en)
JP (1) JPS5752205A (en)
CH (1) CH648180GA3 (en)
DE (1) DE3127588A1 (en)
GB (2) GB2080650B (en)
HK (2) HK5986A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH640693B (en) * 1980-07-21 Asulab Sa C-MOS OSCILLATOR CIRCUIT.
DE3831176A1 (en) * 1988-09-13 1990-03-22 Siemens Ag Oscillator cell
NL9100066A (en) * 1991-01-16 1992-08-17 Koninkl Philips Electronics Nv OSCILLATOR.
JP3270880B2 (en) * 1994-06-30 2002-04-02 ソニー株式会社 Crystal oscillation circuit
US5557243A (en) * 1995-04-19 1996-09-17 Lg Semicon Co., Ltd. Oscillation circuit with power limiting controller
US5568093A (en) * 1995-05-18 1996-10-22 National Semiconductor Corporation Efficient, high frequency, class A-B amplifier for translating low voltage clock signal levels to CMOS logic levels
KR19990064076A (en) * 1996-08-07 1999-07-26 요트.게.아. 롤페즈 oscillator
JPH11514185A (en) * 1996-08-07 1999-11-30 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ Oscillator with starting circuit
US5909152A (en) * 1997-02-28 1999-06-01 Texas Instruments Incorporated Low power CMOS crystal oscillator circuit
US6278336B1 (en) 1998-02-27 2001-08-21 Texas Instruments Incorporated Low-current oscillator with hysteresis input buffer
GB0030694D0 (en) * 2000-12-15 2001-01-31 Nokia Mobile Phones Ltd An electronic circuit supplied with power via current generator means
EP1289121A1 (en) * 2001-08-13 2003-03-05 EM Microelectronic-Marin SA Low consumption inverter oscillator circiut
GB2402276B (en) * 2003-03-07 2005-08-03 Motorola Inc Amplitude level control circuit
US7170332B2 (en) * 2004-04-15 2007-01-30 Analog Devices, Inc. Reference signal generators
US7688154B1 (en) * 2006-06-21 2010-03-30 Exar Corporation Amplitude regulated crystal oscillator
US7391278B2 (en) * 2006-07-31 2008-06-24 Freescale Semiconductor, Inc. Oscillator with stacked amplifier
US7372342B2 (en) * 2006-07-31 2008-05-13 Freescale Semiconductor, Inc. Oscillator
JP5779162B2 (en) * 2012-09-28 2015-09-16 株式会社東芝 Rectifier circuit and wireless communication device using the same
US8922287B2 (en) * 2013-01-30 2014-12-30 Freescale Semiconductor, Inc. Amplitude loop control for oscillators
CN111404486B (en) * 2020-03-25 2024-05-03 上海洺太电子科技有限公司 Self-charging-based low-power-consumption crystal oscillator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2234695A1 (en) * 1973-06-20 1975-01-17 Golay Bernard Sa
DE2556685A1 (en) * 1974-12-18 1976-07-01 Suwa Seikosha Kk ELECTRONIC CLOCK
DE2616678A1 (en) * 1975-04-21 1976-11-04 Hitachi Ltd OSCILLATOR CIRCUIT
DE2639598A1 (en) * 1975-09-03 1977-03-10 Hitachi Ltd AMPLIFIER CIRCUIT
US4013979A (en) * 1974-09-20 1977-03-22 Centre Electronique Horloger S.A. Cmos oscillator with first and second mos transistors of opposed type integrated on the same substrate
CH613357GA3 (en) * 1977-03-30 1979-09-28 Crystal oscillator
DE2933854A1 (en) * 1978-08-22 1980-03-13 Nippon Electric Co OSCILLATOR CIRCUIT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211985A (en) * 1975-09-03 1980-07-08 Hitachi, Ltd. Crystal oscillator using a class B complementary MIS amplifier
US4013797A (en) * 1975-12-10 1977-03-22 Microlife Technics, Inc. Bacterial compositions and process for fermentation of meat therewith
US4095195A (en) * 1977-03-25 1978-06-13 Kabushiki Kaisha Meidensha Low power dissipation crystal oscillator
DE2714151C2 (en) * 1977-03-30 1984-03-08 Kabushiki Kaisha Meidensha, Tokyo Crystal oscillator with low power dissipation
JPS53146558A (en) * 1977-05-26 1978-12-20 Citizen Watch Co Ltd Oscillator circuit
JPS5936445B2 (en) * 1977-06-21 1984-09-04 シチズン時計株式会社 Low power circuit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2234695A1 (en) * 1973-06-20 1975-01-17 Golay Bernard Sa
US4013979A (en) * 1974-09-20 1977-03-22 Centre Electronique Horloger S.A. Cmos oscillator with first and second mos transistors of opposed type integrated on the same substrate
DE2556685A1 (en) * 1974-12-18 1976-07-01 Suwa Seikosha Kk ELECTRONIC CLOCK
DE2616678A1 (en) * 1975-04-21 1976-11-04 Hitachi Ltd OSCILLATOR CIRCUIT
DE2639598A1 (en) * 1975-09-03 1977-03-10 Hitachi Ltd AMPLIFIER CIRCUIT
CH613357GA3 (en) * 1977-03-30 1979-09-28 Crystal oscillator
DE2933854A1 (en) * 1978-08-22 1980-03-13 Nippon Electric Co OSCILLATOR CIRCUIT

Also Published As

Publication number Publication date
HK17786A (en) 1986-03-21
JPS643361B2 (en) 1989-01-20
DE3127588A1 (en) 1982-04-22
GB2143393A (en) 1985-02-06
GB2080650B (en) 1985-08-21
GB2080650A (en) 1982-02-03
JPS5752205A (en) 1982-03-27
GB8420746D0 (en) 1984-09-19
HK5986A (en) 1986-01-31
GB2143393B (en) 1985-09-18
US4360789A (en) 1982-11-23

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