Parthus Ireland Limited

David J Foley

John M Horan

John Ryan

Mark M Smyth

An apparatus is described comprising a current source and a pair of transistors coupled to the current source. A pair of variable loads are coupled to the pair of transistors such that a first of the pair of transistors drives a first of the pair of variable loads and a second of the pair of transistors drives a second of the pair of variable loads. Each of the pair of variable loads are coupled to a high gain input and a low gain input. Another apparatus is described comprising an oscillator having a high gain input and a low gain input. The oscillator comprises a series of inverters where each inverter output is coupled to the next inverter input in the series. At least one of the inverters comprises a current source and a pair of transistors coupled to the current source. A pair of variable loads are coupled to the pair of transistors such that a first of the pair of transistors drives a first of the pair of variable loads and a second of the pair of transistors drives a second of the pair of variable loads. Each of the pair of variable loads are coupled to a high gain input and a low gain input. Yet another apparatus is described comprising an oscillator having a high gain input and a low gain input. The oscillator comprises a series of inverters, each inverter output is coupled to the next inverter input in the series. The low gain input is coupled to less than all of the inverters within the series.

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Ferbane, Ireland

David J Foley