Crystal reference for use in oscillator circuit

Details Crystal reference for use in oscillator circuit Crystal reference for use in oscillator circuit

1989-02-14

1990-10-30

Pascal, Robert J.

Oscillators

With device responsive to external physical condition

Temperature or light responsive

331158, 331176, H03B 532

Patent

active

049671650

ABSTRACT:
Operational characteristics of a crystal reference element (10) are measured during a testing and grading process. Once determined, information representing these operational characteristics are stored in a memory means (16) within the crystal reference element. In this way, the operational characteristics particular to each crystal reference element may be readily retrieved and used to compensate an oscillator circuit (32).

REFERENCES:
patent: 3970818 (1976-07-01), Friedrichs
patent: 3978650 (1976-09-01), Hashimoto et al.
patent: 4004133 (1977-01-01), Hannan et al.
patent: 4430596 (1984-02-01), Shanley

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