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1. 发明申请

US20180337635A1 METHOD AND CIRCUIT FOR EXCITING A CRYSTAL OSCILLATION CIRCUIT 审中-公开
公开(公告)号：US20180337635A1
公开(公告)日：2018-11-22
申请号：US15635635
申请日：2017-06-28
申请人： Beken Corporation
发明人： Jiazhou Liu , Yunfeng Zhao , Dawei Guo
IPC分类号： H03B5/30
CPC分类号： H03B5/30 , H03B5/32 , H03B2200/0008 , H03B2200/0012 , H03B2200/005 , H03B2200/0074 , H03B2200/008 , H03B2201/0275
摘要： A method and a circuit for exciting a crystal oscillation circuit are disclosed herein. The crystal oscillation circuit comprising: charging, with a charging circuit, a voltage-controlled oscillator; providing, with the voltage-controlled oscillator, an exciting signal; blocking, with a direct current blocking capacitor, direct current from the voltage-controlled oscillator to the crystal oscillation circuit; and exciting, with the exciting signal, the crystal oscillation circuit. The circuit for exciting a crystal oscillation circuit, comprising: a charging circuit; a voltage-controlled oscillator coupled to the charging circuit and configured to provide an exciting signal to the crystal oscillation circuit; and a direct current blocking capacitor connected between the voltage-controlled oscillator and the crystal oscillation circuit and configured to block direct current from the voltage-controlled oscillator.

2. 发明授权

US09979348B2 Low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power 有权
公开(公告)号：US09979348B2
公开(公告)日：2018-05-22
申请号：US15161521
申请日：2016-05-23
申请人： UNIVERSITY OF VIRGINIA PATENT FOUNDATION
发明人： Benton H. Calhoun , Aatmesh Shrivastava
IPC分类号： H03B5/36 , H03L5/00
CPC分类号： H03B5/364 , H03B5/04 , H03B5/32 , H03B2200/0012 , H03B2200/0046 , H03B2200/0064 , H03B2200/0082 , H03L5/00
摘要： A low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power biases an amplifier for an XTAL in the sub-threshold operating regime. A feedback control scheme can be used to bias the amplifier for an XTAL biased in the sub-threshold operating regime. The amplifier of a XTAL oscillator can be duty cycled to save power, e.g., the XTAL driver can be turned off to save power when the amplitude of the XTAL oscillation reaches a maximum value in range; but be turned back on when the amplitude of the XTAL oscillation starts to decay, to maintain the oscillation before it stops. In addition or alternatively, a feedback control scheme to duty cycle the amplifier of a XTAL oscillator can be used to monitor the amplitude of the oscillation.

3. 发明授权

US09941838B2 Low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power 有权
公开(公告)号：US09941838B2
公开(公告)日：2018-04-10
申请号：US15388711
申请日：2016-12-22
申请人： UNIVERSITY OF VIRGINIA PATENT FOUNDATION
发明人： Benton H. Calhoun , Aatmesh Shrivastava
IPC分类号： H03B5/36 , H03B5/04 , H03B5/32
CPC分类号： H03B5/364 , H03B5/04 , H03B5/32 , H03B2200/0012 , H03B2200/0046 , H03B2200/0064 , H03B2200/0082 , H03L5/00
摘要： A low voltage crystal oscillator (XTAL) driver with feedback controlled duty cycling for ultra low power biases an amplifier for an XTAL in the sub-threshold operating regime. A feedback control scheme can be used to bias the amplifier for an XTAL biased in the sub-threshold operating regime. The amplifier of a XTAL oscillator can be duty cycled to save power, e.g., the XTAL driver can be turned off to save power when the amplitude of the XTAL oscillation reaches a maximum value in range; but be turned back on when the amplitude of the XTAL oscillation starts to decay, to maintain the oscillation before it stops. In addition or alternatively, a feedback control scheme to duty cycle the amplifier of a XTAL oscillator can be used to monitor the amplitude of the oscillation.

4. 发明申请

US20170126234A1 Integrated Circuit Device, Electronic Device, Electronic Apparatus, and Base Station 审中-公开
公开(公告)号：US20170126234A1
公开(公告)日：2017-05-04
申请号：US15337669
申请日：2016-10-28
申请人： Seiko Epson Corporation
发明人： Kensaku Isohata , Takayuki Kikuchi
IPC分类号： H03L1/04 , H03B5/32 , H03L1/02 , H01L23/00 , H01L23/34
CPC分类号： H03L1/04 , H01L23/34 , H01L23/345 , H01L24/09 , H01L24/48 , H01L2224/04042 , H01L2224/48106 , H01L2224/48227 , H01L2224/85423 , H01L2224/85444 , H01L2224/85447 , H01L2924/00014 , H01L2924/351 , H03B5/32 , H03B2200/0008 , H03B2200/001 , H03B2200/0012 , H03B2200/0018 , H03L1/02 , H03L1/028 , H01L2224/45099
摘要： An integrated circuit device includes a substrate, a joining part provided on the substrate and joined to a vibrator, and a plurality of bonding pads provided on the substrate. The joining part includes an insulating protective film that covers a part of a surface of the substrate, and no insulating protective film is provided between the adjacent bonding pads.

5. 发明授权

US09515605B1 Variable gain electro-mechanical oscillator and method for starting balanced oscillations 有权
标题翻译：可变增益机电振荡器和起动平衡振荡的方法
公开(公告)号：US09515605B1
公开(公告)日：2016-12-06
申请号：US14835244
申请日：2015-08-25
申请人： Maxlinear Asia Singapore PTE LTD
发明人： Srinivasa Rao Madala , Kumar Baratj Singareddy , Hormoz Djahanshahi , Stanley Ho
IPC分类号： H03B5/12 , H03B5/30
CPC分类号： H03B5/32 , H03B5/1212 , H03B5/326 , H03B5/368 , H03B2200/0012 , H03B2200/009
摘要： A cross-coupled complementary balanced electro-mechanical oscillator and a method for generating balanced oscillations. The oscillator comprises an electro-mechanical resonator connected to an oscillator core. The oscillator core comprises capacitively cross-coupled complementary programmable inverters and a resistor network. The capacitors inhibit the inverters from latching to a non-oscillatory direct-current (DC) state. The resistor network forms a high pass filter with the capacitors to inhibit relaxation oscillations. The inverters are programmable such that their gain can be varied over time to avoid parasitic oscillations. The oscillator may be frequency-tunable. The method comprises starting balanced oscillations in the oscillator with a low gain to inhibit high-frequency parasitic oscillation modes, inhibiting latching to a DC state using a capacitance, and inhibiting relaxation oscillations using a high pass filter, and varying gain over time to improve phase noise performance. The oscillator may comprise a clock source to excite oscillations in the oscillator core at a frequency close to the resonator frequency to inhibit unwanted oscillations.
摘要翻译：交叉耦合互补平衡机电振荡器和产生平衡振荡的方法。振荡器包括连接到振荡器芯的机电谐振器。振荡器芯包括电容式交叉耦合互补可编程逆变器和电阻网络。电容器可以防止逆变器锁存到非振荡直流（DC）状态。电阻网络与电容器形成高通滤波器以抑制弛豫振荡。逆变器是可编程的，使得它们的增益可以随时间变化以避免寄生振荡。振荡器可以是频率可调谐的。该方法包括以低增益启动振荡器中的平衡振荡，以抑制高频寄生振荡模式，禁止使用电容锁存到DC状态，以及使用高通滤波器抑制弛豫振荡，并随时间改变增益以改善相位噪音表现。振荡器可以包括时钟源，以便以接近谐振器频率的频率激发振荡器芯中的振荡，以抑制不期望的振荡。

6. 发明授权

US09461585B2 Oscillation circuit, oscillator, manufacturing method of oscillator, electronic device, and moving object 有权
标题翻译：振荡电路，振荡器，振荡器，电子器件和移动物体的制造方法
公开(公告)号：US09461585B2
公开(公告)日：2016-10-04
申请号：US14525568
申请日：2014-10-28
申请人： Seiko Epson Corporation
发明人： Takehiro Yamamoto , Masayuki Ishikawa , Yosuke Itasaka
IPC分类号： H03B5/36
CPC分类号： H03B5/366 , H03B5/362 , H03B2200/0008 , H03B2200/0012 , H03B2200/0034 , H03B2200/004 , H03B2200/0062
摘要： An oscillation circuit includes: an oscillation unit which includes a first terminal and a second terminal connected to a vibrator; a third terminal to which a ground potential is supplied; a fourth terminal which is electrically connected to the second terminal, and to which at least one of an AC voltage for driving the vibrator and a voltage for operating the oscillation unit is applied; and a first switching unit which switches modes of electrical connection between the first terminal and the third terminal.
摘要翻译：振荡电路包括：振荡单元，其包括连接到振动器的第一端子和第二端子; 提供接地电位的第三端子; 电连接到第二端子的第四端子，并且施加用于驱动振动器的AC电压和用于操作振荡单元的电压中的至少一个; 以及第一切换单元，其切换第一终端和第三终端之间的电连接模式。

7. 发明授权

US09407200B2 Crystal oscillator with low-power mode 有权
标题翻译：具有低功耗模式的晶体振荡器
公开(公告)号：US09407200B2
公开(公告)日：2016-08-02
申请号：US13220840
申请日：2011-08-30
申请人： Ashutosh Verma , Xiaoyue Wang , Shingo Hatanaka , Shafiq M. Jamal
发明人： Ashutosh Verma , Xiaoyue Wang , Shingo Hatanaka , Shafiq M. Jamal
IPC分类号： H03B5/36
CPC分类号： H03B5/36 , H03B2200/0012 , H03B2200/0046
摘要： Circuits having corresponding methods and computer-readable media comprise: an amplifier; a crystal port configured to be electrically coupled to a crystal, wherein a first terminal of the crystal port is electrically coupled to an input of the amplifier, and wherein a second terminal of the crystal port is electrically coupled to an output of the amplifier; a first capacitor, wherein a first terminal of the first capacitor is electrically coupled to ground; a second capacitor, wherein a first terminal of the second capacitor is electrically coupled to ground; a first switch configured to selectively electrically couple the input of the amplifier to a second terminal of the first capacitor; and a second switch configured to selectively electrically couple the output of the amplifier to a second terminal of the second capacitor.
摘要翻译：具有相应方法和计算机可读介质的电路包括：放大器; 晶体端口被配置为电耦合到晶体，其中晶体端口的第一端子电耦合到放大器的输入端，并且其中晶体端口的第二端子电耦合到放大器的输出端; 第一电容器，其中所述第一电容器的第一端子电耦合到地; 第二电容器，其中所述第二电容器的第一端子电耦合到地; 第一开关，其被配置为选择性地将所述放大器的输入电耦合到所述第一电容器的第二端子; 以及第二开关，被配置为选择性地将所述放大器的输出电耦合到所述第二电容器的第二端子。

8. 发明授权

US09252708B1 Class-AB XTAL circuit 有权
标题翻译： AB类XTAL电路
公开(公告)号：US09252708B1
公开(公告)日：2016-02-02
申请号：US14257455
申请日：2014-04-21
申请人： Marvell International Ltd.
发明人： Dennis Sinitsky , Junshi Qiao , Shafiq M. Jamal , Tao Shui
IPC分类号： H03B5/32 , H03B5/36
CPC分类号： H03B5/364 , H03B5/36 , H03B5/362 , H03B2200/0012 , H03B2200/0062
摘要： A resonant element driver circuit includes a NMOS transistor and a PMOS transistor that are configured to drive a resonant element. The resonant element driver circuit includes biasing circuitry that is configured to bias the PMOS transistor. The biasing circuitry receives a reference signal that is used to set the biasing on the PMOS transistor. The resonant element driver further includes mirror circuitry that tracks current flowing through the NMOS and PMOS transistors.
摘要翻译：谐振元件驱动电路包括被配置为驱动谐振元件的NMOS晶体管和PMOS晶体管。谐振元件驱动电路包括被配置为偏置PMOS晶体管的偏置电路。偏置电路接收用于设置PMOS晶体管上的偏置的参考信号。谐振元件驱动器还包括跟踪流过NMOS和PMOS晶体管的电流的反射镜电路。

9. 发明授权

US08952761B2 System and method for supporting different types of oscillator circuits 有权
标题翻译：用于支持不同类型振荡器电路的系统和方法
公开(公告)号：US08952761B2
公开(公告)日：2015-02-10
申请号：US13911876
申请日：2013-06-06
申请人： Intel IP Corporation
发明人： Kristopher Kevin Kaufman , John Wayne Simmons
IPC分类号： H03B5/36 , H03K19/094 , H03F3/72 , H03K3/36 , H03B5/12 , H03B5/02
CPC分类号： H03K3/36 , H03B5/02 , H03B5/1206 , H03B5/1228 , H03B5/364 , H03B2200/0012 , H03B2200/0026 , H03B2200/0046 , H03F3/72 , H03K19/09429
摘要： In accordance with some embodiments of the present disclosure, an oscillator circuit comprises, a first pad associated with a first terminal of an oscillator and a second pad associated with a second terminal of the oscillator. The oscillator is configured to generate an oscillating signal and communicate the oscillating signal from the second terminal to a clock distributor coupled to the second pad. The oscillator circuit further comprises an oscillator gain element comprising an output node coupled to the first pad and an input node coupled to the second pad. The oscillator circuit also comprises a digital-to-analog converter (DAC) coupled to the first pad. The oscillator circuit additionally comprises a switching circuit coupled to the gain element. The switching circuit is configured to enable the gain element when the oscillator comprises a resonator and disable the gain element when the oscillator comprises a voltage controlled oscillating module.
摘要翻译：根据本公开的一些实施例，振荡器电路包括：与振荡器的第一端子相关联的第一焊盘和与振荡器的第二端子相关联的第二焊盘。振荡器被配置为产生振荡信号并将振荡信号从第二终端传送到耦合到第二焊盘的时钟分配器。振荡器电路还包括振荡器增益元件，其包括耦合到第一焊盘的输出节点和耦合到第二焊盘的输入节点。振荡器电路还包括耦合到第一焊盘的数模转换器（DAC）。振荡器电路还包括耦合到增益元件的开关电路。开关电路被配置为当振荡器包括谐振器时启用增益元件，并且当振荡器包括电压控制的振荡模块时禁用增益元件。

10. 发明授权

US08729971B2 Oscillator, and clock generator, semiconductor device, and electronic device including the same 有权
标题翻译：振荡器，时钟发生器，半导体器件和包括其的电子器件
公开(公告)号：US08729971B2
公开(公告)日：2014-05-20
申请号：US13328046
申请日：2011-12-16
申请人： Shinichi Kubota
发明人： Shinichi Kubota
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0012 , H03B2200/0062 , H03B2200/0082 , H03B2200/0094 , H03L5/00
摘要： An oscillator includes a reference voltage generator, an oscillation element configured to oscillate by either a drive voltage or a drive current and output an oscillation signal, a peak hold element configured to detect a peak level of the oscillation signal for output; and a controller configured to increase or decrease the drive voltage or drive current in accordance with the reference voltage generated by the reference voltage generator and the peak level output from the peak hold element.
摘要翻译：振荡器包括参考电压发生器，被配置为通过驱动电压或驱动电流振荡并输出振荡信号的振荡元件，配置成检测振荡信号的峰值电平以输出的峰值保持元件; 以及控制器，被配置为根据由参考电压发生器产生的参考电压和从峰值保持元件输出的峰值电平来增大或减小驱动电压或驱动电流。

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