Digitally controlled oscillator insensitive to changes in process, voltage, temperature and digital phase locked loop including same

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United States of America Patent

PATENT NO 11736112
APP PUB NO 20220385294A1
SERIAL NO

17675351

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Abstract

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A digitally controlled oscillator (DCO) includes; a current mirror configured to generate a supply current in response to a bias voltage matching a reference current, a variable resistor connected to the current mirror through a first node outputting the reference current and configured to provide a variable resistance in response to a first control signal, an oscillation circuit connected to the current mirror through a second node outputting the supply current and configured to generate an oscillation signal in response to the supply current, and a feedback circuit configured to control the bias voltage in relation to at least one of a voltage at the first node and a voltage at the second node.

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Patent Owner(s)

  • SAMSUNG ELECTRONICS CO., LTD

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Choo, Kangyeop Hwaseong-si, KR 4 9
Jeong, Chanyoung Hwaseong-si, KR 14 57
Kim, Wooseok Suwon-si, KR 29 41
Yu, Wonsik Anyang-si, KR 9 10

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