Intel Corporation

Michael Bichan

Michael W Altmann

Noam Familia

Mark L Elzinga

Robert H Wang

Dror Lazar

Vadim Levin

Jonathan E Rogers

Youngmin Park

Described is an apparatus comprising a first circuitry, a second circuitry, a first capacitor array, and a second capacitor array. The first circuitry may have an oscillator. The first capacitor array may have a set of first capacitors to tune the oscillator. The second capacitor array may have a second capacitor to tune the oscillator. A capacitance of the second capacitor may be greater than an average capacitance of the first capacitors. The second circuitry may be operable to synchronously activate the second capacitor and deactivate a number N of the first capacitors, and to synchronously deactivate the second capacitor and activate the N first capacitors, based on a predetermined sequence.

PLL capacitor swap technique and low jitter dynamic Digital Controlled Oscillator band select

A method and apparatus for reducing jitter in a ring oscillator are described. In one embodiment, the apparatus comprises a first power supply node to provide power supply current; a ring oscillator, coupled to the first power supply node, to generate an oscillating output according to change in the power supply current provided to the ring oscillator; and a second power supply node; a circuit, coupled to the second power supply node, to replicate time-average (e.g., DC) behavior of the ring oscillator; and a feedback mechanism having inputs coupled to the first and second power supply nodes, and an output to control current in the circuit.

Apparatus for reducing periodic jitter in a ring oscillator

Described is an apparatus which comprises: a ring oscillator having odd number of delay stages; and an interpolator to receive at least three phases from the ring oscillator, the interpolator to generate quadrature clock phases by interpolating the at least four phases.

Apparatus for generating quadrature clock phases from a single-ended odd-stage ring oscillator

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Toronto, Canada

Michael Bichan