Amplitude regulator for crystal oscillator

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12255584
APP PUB NO 20230421100A1
SERIAL NO

18037259

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electronic device comprises an oscillator circuit portion comprising an inverter and a crystal oscillator connected between the input and output terminals of the inverter. An amplitude regulator circuit portion is arranged to supply a current to the inverter. The amplitude regulator monitors a voltage at the input of the inverter and varies the current supplied to the inverter in response to the monitored voltage. The amplitude regulator comprises a trimmable resistor arranged such that the voltage at the input of the inverter is set to an operating point when the supply current is equal to a threshold value, the operating point being at least partly determined by the selected resistance of the resistor. A current monitor is arranged to monitor the current supplied to the inverter during operation and to determine therefrom whether the voltage at the input terminal of the inverter is within a predetermined range.

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Patent Owner(s)

  • NORDIC SEMICONDUCTOR ASA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Strandvik, Erlend Trondheim, NO 3 2
Wu, Hsin-Ta Trondheim, NO 13 120

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