Circuits for digital and analog controlled oscillators
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United States of America Patent
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May 15, 2018
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app pub date -
Dec 27, 2014
filing date -
Dec 27, 2014
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Abstract
A circuit may comprise a first node, a ring oscillator, a regulator, and a Kvcc compensation circuit. The first node may be a supply node to provide a supply voltage for the circuit. The ring oscillator may be formed from inverters. The regulator may use a single transistor between the first node and a second node for powering the oscillator. The K compensation circuit may be used to provide to the oscillator a variable capacitive load that is dependent on the supply at the first supply node, and it may drag oscillator frequency down when the first node supply goes up.
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