SE8401268D0 - crystal oscillator - Google Patents

crystal oscillator

Info

Publication number
SE8401268D0
SE8401268D0 SE8401268A SE8401268A SE8401268D0 SE 8401268 D0 SE8401268 D0 SE 8401268D0 SE 8401268 A SE8401268 A SE 8401268A SE 8401268 A SE8401268 A SE 8401268A SE 8401268 D0 SE8401268 D0 SE 8401268D0
Authority
SE
Sweden
Prior art keywords
stage
comparator
crystal oscillator
transistor
gate
Prior art date
Application number
SE8401268A
Other languages
Swedish (sv)
Other versions
SE8401268L (en
Inventor
V R Saari
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of SE8401268D0 publication Critical patent/SE8401268D0/en
Publication of SE8401268L publication Critical patent/SE8401268L/en

Links

Classifications

    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

A crystal oscillator (10) including a basic oscillator stage (16), a comparator stage (18), and a TTL output stage (20) has the amplifying transistor gate (26) of the comparator stage (18) connected to the input node (21) of the basic oscillator stage (16) to improve the duty cycle. A load transistor (M7) for the amplifying transistor (M6) of the comparator (18) is connected as a stably biased source-follower to permit symmetrical square-wave output over a wide range of supply voltages. The gate of the load transistor (M7) may be connected to the output node 22 of the inverter (M1, M2) of the basic oscillator stage (16), and is an active load. <IMAGE>
SE8401268A 1983-03-09 1984-03-07 crystal oscillator SE8401268L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US47385783A 1983-03-09 1983-03-09

Publications (2)

Publication Number Publication Date
SE8401268D0 true SE8401268D0 (en) 1984-03-07
SE8401268L SE8401268L (en) 1984-09-10

Family

ID=23881306

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8401268A SE8401268L (en) 1983-03-09 1984-03-07 crystal oscillator

Country Status (6)

Country Link
JP (1) JPS59169211A (en)
DE (1) DE3408393A1 (en)
FR (1) FR2542526A1 (en)
GB (1) GB2136651A (en)
IT (1) IT1175948B (en)
SE (1) SE8401268L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766399A (en) * 1987-08-03 1988-08-23 International Business Machines Corporation Oscillator circuit
US4825178A (en) * 1987-08-26 1989-04-25 International Business Machines Corporation Oscillator with noise rejection and square wave output
US4853655A (en) * 1987-11-27 1989-08-01 American Telephone And Telegraph Company, At&T Bell Laboratories High frequency CMOS oscillator
DE3831176A1 (en) * 1988-09-13 1990-03-22 Siemens Ag Oscillator cell
US5446420A (en) * 1993-08-25 1995-08-29 Motorola, Inc. Method and apparatus for reducing jitter and improving testability of an oscillator

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350662A (en) * 1965-10-21 1967-10-31 Ibm Crystal controlled oscillator circuit utilizing transistors
US3665342A (en) * 1970-11-04 1972-05-23 Motorola Inc Resonant circuit transistor oscillator system
US3913026A (en) * 1974-04-08 1975-10-14 Bulova Watch Co Inc Mos transistor gain block
CH580358A5 (en) * 1974-09-20 1976-09-30 Centre Electron Horloger
JPS5190549A (en) * 1975-02-06 1976-08-09
US3959744A (en) * 1975-02-26 1976-05-25 Time Computer, Inc. CMOS oscillator having bias circuit outside oscillator feedback loop
FR2379945A1 (en) * 1977-02-04 1978-09-01 Labo Cent Telecommunicat Matching circuit for logic systems - has three MOSFETs in drain-source series between supply poles
CH641316B (en) 1980-09-19 Ebauches Electroniques Sa LOW CURRENT CONSUMPTION OSCILLATOR CIRCUIT.
US4383224A (en) * 1981-01-21 1983-05-10 Bell Telephone Laboratories, Incorporated NMOS Crystal oscillator

Also Published As

Publication number Publication date
GB2136651A (en) 1984-09-19
FR2542526A1 (en) 1984-09-14
IT1175948B (en) 1987-08-12
GB8406277D0 (en) 1984-04-11
IT8419954A0 (en) 1984-03-08
JPS59169211A (en) 1984-09-25
SE8401268L (en) 1984-09-10
DE3408393A1 (en) 1984-09-13

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