Crystal oscillator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9431959
APP PUB NO 20160099682A1
SERIAL NO

14965849

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A crystal oscillator, including: a voltage stabilizing unit, a transconductance unit, a feedback resistor, a crystal resonator and at least two ground capacitors. The voltage stabilizing unit includes a current source and a first branch circuit including PMOS and NMOS connected in series, PMOS has its source connected to output of the current source, PMOS and NMOS have their gates connected to drains thereof, and NMOS has its source connected to ground. The transconductance unit includes a second branch circuit including PMOS and NMOS connected in series, PMOS has its source connected to output of the voltage stabilizing unit, PMOS and NMOS have their gates connected to input of the crystal resonator and one end of the resistor, and have their drains connected to output of the crystal resonator and another end of the resistor. The capacitors are connected to two ends of the crystal resonator respectively and ground.

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Patent Owner(s)

Patent OwnerAddress
SHANGHAI EASTSOFT MICROELECTRONICS CO LTD200235 5TH FLOOR 2A \/ F TIANHUA INFORMATION TECHNOLOGY PARK 299 LONGCAO ROAD XUHUI DISTRICT SHANGHAI SHANGHAI CITY SHANGHAI CITY 200235

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Ruijin Shanghai, CN 4 12
Tao, Jingjing Shanghai, CN 4 18
Zhang, Xu Shanghai, CN 460 1822

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