Array oscillator circuit

Details Array oscillator circuit Array oscillator circuit

1995-12-11

1998-02-10

Pascal, Robert

Oscillators

Ring oscillators

327266, 327158, 327262, 327287, 327280, 326115, 326 37, H03B 2700, H03B 500

Patent

active

057173621

ABSTRACT:
An array oscillator circuit is disclosed herein. The array oscillator circuit includes a plurality of ring oscillators, each ring oscillator having a plurality of buffer stages for generating output signals on a like plurality of oscillator output ports. Interconnections are provided between each of the plurality of ring oscillators and at least one other of the plurality of ring oscillators such that the plurality of ring oscillators oscillate at identical frequencies and such that the output signals on the each ring oscillator's plurality of oscillator output ports have a phase offset from the signals generated on corresponding ones of the other ring oscillator's oscillator output ports. A multiplexer provides an electrical connection to a selected one of the plurality of oscillator output ports of the plurality of ring oscillators.

REFERENCES:
patent: 5268656 (1993-12-01), Muscavage
patent: 5347234 (1994-09-01), Gersbach et al.
patent: 5426398 (1995-06-01), Kuo
patent: 5475344 (1995-12-01), Maneatis et al.
"Wide-Range, Variable-Frequency Oscillator Circuit"; IBM Technical Disclosure Bulletin; vol. 30, No. 3; Aug. 1987; pp. 1181-1182.
"A Single-Chip, Functional Tester for VLSI Circuits"; J.A. Gasbarro et al.; 1990 IEEE Intl. Solid-State Circuit Conference, Digest of Technical Papers; pp. 84-85.
"A PLL Clock Generator with 5 to 110MHz Lock Range for Microprocessors"; I.A. Young et al.; 1992 IEEE Intl. Solid-State Circuits Conference; pp. 50-51.

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