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公开(公告)号：US10979031B1
公开(公告)日：2021-04-13
申请号：US16782634
申请日：2020-02-05
申请人： SiTime Corporation
摘要： In a timing signal generator having a resonator, one or more temperature-sense circuits generate an analog temperature signal and a digital temperature signal indicative of temperature of the resonator. First and second temperature compensation signal generators to generate, respectively, an analog temperature compensation signal according to the analog temperature signal and a digital temperature compensation signal according to the digital temperature signal. Clock generating circuitry drives the resonator into mechanically resonant motion and generates a temperature-compensated output timing signal based on the mechanically resonant motion, the analog temperature compensation signal and the digital temperature compensation signal.
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公开(公告)号：US11228302B1
公开(公告)日：2022-01-18
申请号：US17199314
申请日：2021-03-11
申请人： SiTime Corporation
摘要： In a timing signal generator having a resonator, one or more temperature-sense circuits generate an analog temperature signal and a digital temperature signal indicative of temperature of the resonator. First and second temperature compensation signal generators to generate, respectively, an analog temperature compensation signal according to the analog temperature signal and a digital temperature compensation signal according to the digital temperature signal. Clock generating circuitry drives the resonator into mechanically resonant motion and generates a temperature-compensated output timing signal based on the mechanically resonant motion, the analog temperature compensation signal and the digital temperature compensation signal.
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公开(公告)号：US10247621B1
公开(公告)日：2019-04-02
申请号：US15264583
申请日：2016-09-13
申请人： SiTime Corporation
摘要： In a high resolution temperature sensor, first and second MEMS resonators generate respective first and second clock signals and a locked-loop reference clock generator generates a reference clock signal having a frequency that is phase-locked to at least one of the first and second clock signals. A frequency-ratio engine within the MEMS temperature sensor oversamples at least one of the first and second clock signals with the reference clock signal to generate a ratio of the frequencies of the first and second clock signals.
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公开(公告)号：US11528014B1
公开(公告)日：2022-12-13
申请号：US17544171
申请日：2021-12-07
申请人： SiTime Corporation
摘要： In a timing signal generator having a resonator, one or more temperature-sense circuits generate an analog temperature signal and a digital temperature signal indicative of temperature of the resonator. First and second temperature compensation signal generators to generate, respectively, an analog temperature compensation signal according to the analog temperature signal and a digital temperature compensation signal according to the digital temperature signal. Clock generating circuitry drives the resonator into mechanically resonant motion and generates a temperature-compensated output timing signal based on the mechanically resonant motion, the analog temperature compensation signal and the digital temperature compensation signal.
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公开(公告)号：US10833632B1
公开(公告)日：2020-11-10
申请号：US16402161
申请日：2019-05-02
申请人： SiTime Corporation
摘要： In an integrated circuit device having a microelectromechanical-system (MEMS) resonator and a temperature transducer, a clock signal is generated by sensing resonant mechanical motion of the MEMS resonator and a temperature signal indicative of temperature of the MEMS resonator is generated via the temperature transducer. The clock signal and the temperature signal are output from the integrated circuit device concurrently.
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公开(公告)号：US11323071B1
公开(公告)日：2022-05-03
申请号：US17199772
申请日：2021-03-12
申请人： SiTime Corporation
发明人： Aaron Partridge , Sassan Tabatabaei , Lijun Chen , Kamran Souri
IPC分类号： H03B5/36 , H03F3/04 , H03F3/70 , G01C19/5726 , G01C19/56
摘要： An oscillator includes a resonator, sustaining circuit and detector circuit. The sustaining circuit receives a sense signal indicative of mechanically resonant motion of the resonator generates an amplified output signal in response. The detector circuit asserts, at a predetermined phase of the amplified output signal, one or more control signals that enable an offset-reducing operation with respect to the sustaining amplifier circuit.
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公开(公告)号：US11218984B1
公开(公告)日：2022-01-04
申请号：US16655560
申请日：2019-10-17
申请人： SiTime Corporation
摘要： In various time-transfer systems, one or more fixed-position time beacons broadcast radio-frequency (RF) time-transfer messages to time-keeping modules disposed in remote radio heads and other strategic locations to achieve highly reliable and accurate synchronized time, phase, and frequency transfer over a metropolitan or other wide-field area.
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公开(公告)号：US11005422B1
公开(公告)日：2021-05-11
申请号：US16807952
申请日：2020-03-03
申请人： SiTime Corporation
发明人： Aaron Partridge , Sassan Tabatabaei , Lijun Chen , Kamran Souri
IPC分类号： H03B5/36 , H03F3/04 , H03F3/70 , G01C19/56 , G01C19/5726
摘要： An oscillator includes a resonator, sustaining circuit and detector circuit. The sustaining circuit receives a sense signal indicative of mechanically resonant motion of the resonator generates an amplified output signal in response. The detector circuit asserts, at a predetermined phase of the amplified output signal, one or more control signals that enable an offset-reducing operation with respect to the sustaining amplifier circuit.
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公开(公告)号：US10594301B1
公开(公告)日：2020-03-17
申请号：US16004283
申请日：2018-06-08
申请人： SiTime Corporation
摘要： In a timing signal generator having a resonator, one or more temperature-sense circuits generate an analog temperature signal and a digital temperature signal indicative of temperature of the resonator. First and second temperature compensation signal generators to generate, respectively, an analog temperature compensation signal according to the analog temperature signal and a digital temperature compensation signal according to the digital temperature signal. Clock generating circuitry drives the resonator into mechanically resonant motion and generates a temperature-compensated output timing signal based on the mechanically resonant motion, the analog temperature compensation signal and the digital temperature compensation signal.
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公开(公告)号：US11245361B1
公开(公告)日：2022-02-08
申请号：US17061413
申请日：2020-10-01
申请人： SiTime Corporation
摘要： In an integrated circuit device having a microelectromechanical-system (MEMS) resonator and a temperature transducer, a clock signal is generated by sensing resonant mechanical motion of the MEMS resonator and a temperature signal indicative of temperature of the MEMS resonator is generated via the temperature transducer. The clock signal and the temperature signal are output from the integrated circuit device concurrently.
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