Voltage-to-current converter circuit
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United States of America Patent
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Jun 23, 2020
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app pub date -
Mar 21, 2019
filing date -
Mar 21, 2019
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Abstract
An oscillator subsystem included in a phase-locked loop circuit of a computer system may include coarse and fine-tuning circuits. The coarse-tuning circuit may generate a coarse-tuning current based on a reference voltage, and the fine-tuning circuit may generate a fine-tuning current by combining respective currents generated by first and second complement current mirror circuits using a voltage level of a control signal. An oscillator circuit may generate a clock signal whose frequency is based on a combination of the coarse and fine-tuning circuits.
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