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公开(公告)号：US20200274485A1
公开(公告)日：2020-08-27
申请号：US16870582
申请日：2020-05-08
Applicant: Texas Instruments Incorporated
Inventor： Ben-yong Zhang , Seong-Ryong Ryu , Ali Kiaei , Ting-Ta Yen , Kai Yiu Tam
Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.
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公开(公告)号：US20180091095A1
公开(公告)日：2018-03-29
申请号：US15719540
申请日：2017-09-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ben-yong Zhang , Seong-Ryong Ryu , Ali Kiaei , Ting-Ta Yen , Kai Yiu Tam
CPC classification number: H03B1/04 , H03B1/02 , H03B5/326 , H03B5/368 , H03B2200/004 , H03B2200/009 , H03L7/0891 , H03L7/093 , H03L7/099
Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.
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公开(公告)号：US10958213B2
公开(公告)日：2021-03-23
申请号：US16870582
申请日：2020-05-08
Applicant: Texas Instruments Incorporated
Inventor： Ben-yong Zhang , Seong-Ryong Ryu , Ali Kiaei , Ting-Ta Yen , Kai Yiu Tam
Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.
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公开(公告)号：US10651789B2
公开(公告)日：2020-05-12
申请号：US15719540
申请日：2017-09-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ben-yong Zhang , Seong-Ryong Ryu , Ali Kiaei , Ting-Ta Yen , Kai Yiu Tam
Abstract: A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.
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