Integrated circuit replacement operating clock signal generator

Details Integrated circuit replacement operating clock signal generator Integrated circuit replacement operating clock signal generator

1998-10-29

1999-11-09

Mis, David

Oscillators

Electromechanical resonator

Crystal

331108B, 331116FE, 331137, H03B 524, H03B 536

Patent

active

059822481

ABSTRACT:
An integrated circuit configuration for producing a clock signal includes an integrated inverter connected between an input terminal and an output terminal. A crystal is externally connected to the oscillator circuit. A feedback path of the inverter contains a phase-shifting element which effects a phase shift through 180.degree., so that conditions for oscillation continue to be provided if the crystal breaks.

REFERENCES:
patent: 4321562 (1982-03-01), Igarashi
patent: 4571558 (1986-02-01), Gay et al.
patent: 5550489 (1996-08-01), Raab
patent: 5712599 (1998-01-01), Kleinberg
Patent Abstracts of Japan No. 61-154153 (Takao), dated Jul. 12, 1986.
Patent Abstracts of Japan No. 63-157509 (Michio), dated Jun. 30, 1988.
"Microcomputers Components", Siemens Data Book, 1988, Microcontrollers; p. 78.
"Single-Pin" Integrated Crystal Oscillators (Nordholt et al.), IEE Transactions on Circuits and Systems, vol. 37, No. 2, New York, 1990, pp. 175-182.
"Oscillators" (Kurz), Informative Electronics, pp. 3 and 27-29; Kurz, G.; 1988.

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