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1. 发明授权

EP3172835B1 DIFFERENTIAL CRYSTAL OSCILLATOR CIRCUIT 有权
公开(公告)号：EP3172835B1
公开(公告)日：2018-10-17
申请号：EP15732148.0
申请日：2015-06-16
申请人： Qualcomm Incorporated
发明人： RAJAVI, Yashar , KAVOUSIAN, Amirpouya , KHALILI, Alireza , VAHID FAR, Mohammad Bagher , KOMIJANI, Abbas
IPC分类号： H03B5/36 , H03B5/06
CPC分类号： H03B5/364 , H03B5/06 , H03B5/36 , H03B2200/004 , H03B2200/0094
摘要： A differential crystal oscillator circuit, including: first and second output terminals; a cross-coupled oscillation unit including first and second transistors cross-coupled to the first and second output terminals; first and second metal-oxide semiconductor field-effect transistor (MOSFET) diodes, each MOSFET diode including a resistor connected between gate and drain terminals, wherein the first MOSFET diode couples to the first transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the first transistor, wherein the second MOSFET diode couples to the second transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the second transistor; and a reference resonator coupled between the first and second output terminals to establish an oscillation frequency.

2. 发明公开

EP3092714A4 A LOW VOLTAGE CRYSTAL OSCILLATOR (XTAL) DRIVER WITH FEEDBACK CONTROLLED DUTY CYCLING FOR ULTRA LOW POWER 无效
公开(公告)号：EP3092714A4
公开(公告)日：2017-10-11
申请号：EP15735089
申请日：2015-01-12
申请人： UNIV OF VIRGINIA PATENT FOUND D/B/A UNIV OF VIRGINIA LICENSING & VENTURES GROUP
发明人： CALHOUN BENTON H , SHRIVASTAVA AATMESH
IPC分类号： H03B5/36 , H03B5/04
CPC分类号： H03B5/04 , H03B5/32 , H03B5/364 , 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

EP2225826B1 CIRCUIT OSCILLATEUR À QUARTZ À POLARISATION ACTIVE FAIBLE CONSOMMATION 有权
标题翻译：与有源偏振，低消费的晶振电路
公开(公告)号：EP2225826B1
公开(公告)日：2016-03-30
申请号：EP08862924.1
申请日：2008-12-04
申请人： The Swatch Group Research and Development Ltd.
发明人： CASAGRANDE, Arnaud
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B2200/0012 , H03B2200/0062

4. 发明授权

EP2520017B1 METHOD TO SHORTEN CRYSTAL OSCILLATOR´S STARTUP TIME 有权
标题翻译：法晶体振荡器来减少启动时间
公开(公告)号：EP2520017B1
公开(公告)日：2015-11-25
申请号：EP10800943.2
申请日：2010-12-28
申请人： ST-Ericsson SA , Shanghai NF Semiconductors Technology Ltd
发明人： HUANG, Shuiwen , HUANG, Lin
IPC分类号： H03B5/36 , H03L3/00
CPC分类号： H03L7/00 , H03B5/364 , H03B2200/0094 , H03L3/00

5. 发明公开

EP2904701A1 A CRYSTAL OSCILLATOR WITH A NOISELESS AND AMPLITUDE BASED START UP CONTROL LOOP 审中-公开
标题翻译：晶振安静和振幅基于启动控制电路
公开(公告)号：EP2904701A1
公开(公告)日：2015-08-12
申请号：EP13843803.1
申请日：2013-09-30
申请人： Tensorcom Inc.
发明人： THAM, KhongMeng
IPC分类号： H03B5/32
CPC分类号： H03B5/364 , H03B5/06 , H03B2200/0088 , H03B2200/0094 , H03B2201/031 , H03L5/00
摘要： A large gain is used to start up the oscillation of the crystal quickly. A control circuit disables a low resistance path based on the measured amplitude to reduce the power dissipation specification of the crystal. Another technique introduces a mixed-signal controlled power supply multi-path resistive array which tailors the maximum current to the crystal. A successive approximation register converts the amplitude into several partitions and enables/disables one of several power routing paths to the inverter of the oscillator. This allows a better match between the crystal selected by the customer and the on-chip drive circuitry to power up the oscillator without stressing the crystal. The "1/f" noise of the oscillator circuit is minimized by operating transistors in the triode region instead of the linear region.

6. 发明公开

EP2693629A3 Crystal resonator-based oscillator and control method thereof 有权
标题翻译：基于晶体谐振器的振荡器及其控制方法
公开(公告)号：EP2693629A3
公开(公告)日：2014-03-05
申请号：EP13178181.7
申请日：2013-07-26
申请人： Renesas Electronics Corporation
发明人： Ozama, Osamu , Horiguchi, Masashi , Ito, Takayasu
IPC分类号： H03B5/36
CPC分类号： H03B5/36 , H03B5/364 , H03B5/366 , H03B2200/0046 , H03B2200/005 , H03B2200/0082 , H03B2200/0088 , H03B2200/0094
摘要： The present invention provides a semiconductor device including a first terminal and a second terminal respectively coupled to both ends of a crystal resonator, an inverter circuit having an input coupled to the first terminal and an output coupled to the second terminal, a feedback resistor which couples between the first terminal and the second terminal, a variable capacitor coupled to at least one of the first and second terminals, and a control circuit. The control circuit performs control to increase both of the drive capability of the inverter circuit and the capacitance value of the variable capacitor in a second mode rather than a first mode.
摘要翻译：本发明提供了一种半导体器件，包括分别耦合到晶体谐振器的两端的第一端子和第二端子，具有耦合到第一端子的输入和耦合到第二端子的输出的反相器电路，耦合到晶体谐振器的反馈电阻器在第一端子和第二端子之间，耦合到第一和第二端子中的至少一个的可变电容器，以及控制电路。控制电路进行控制，以在第二模式而不是第一模式下增加逆变器电路的驱动能力和可变电容器的电容值。

7. 发明公开

EP2433357A2 SYSTEM AND METHOD FOR REDUCING POWER CONSUMPTION OF AN OSCILLATOR 有权
标题翻译：系统和方法用于减少振荡器的电源使用
公开(公告)号：EP2433357A2
公开(公告)日：2012-03-28
申请号：EP10717990.5
申请日：2010-05-05
申请人： Qualcomm Incorporated
发明人： GARCIA, Jorge, A. , MOYER, Todd
IPC分类号： H03B5/36
CPC分类号： H03B5/36 , H03B5/362 , H03B5/364 , H03B5/366 , H03B2200/0012 , H03B2200/0082 , H04B2001/6908
摘要： An apparatus for generating an oscillating signal including a negative-resistance circuit, a crystal, and a component to modify a series resonance of the crystal to decrease power consumption of the negative-resistance circuit in generating the oscillating signal. The component may include a positive-reactance circuit, one or more inductive elements, or pair of inductive elements coupled to the crystal. The apparatus may further include a frequency-tuning component for adjusting a frequency of the oscillating signal, such as a variable capacitor coupled to the crystal. The negative-resistance circuit may include a digital inverter circuit, an inverting analog amplifier, or a self-regulating circuit. The apparatus may further include a quiescent current source to supply a steady-state current to the negative-resistance circuit, and a start up current source to supply a boost current to the negative-resistance circuit only during start up to expedite the oscillating signal in reaching a defined steady-state condition.

8. 发明授权

EP1426983B1 Multi-track integrated spiral inductor 有权
标题翻译：高速公路集成螺旋电感
公开(公告)号：EP1426983B1
公开(公告)日：2007-08-22
申请号：EP04002810.2
申请日：2000-01-28
申请人： Broadcom Corporation
发明人： Chang, James Y. C.
IPC分类号： H01F17/00
CPC分类号： H03H11/1291 , H01F17/0006 , H01F2017/0053 , H01L23/5227 , H01L27/0251 , H01L27/08 , H01L2924/0002 , H01L2924/3011 , H03B5/1215 , H03B5/1228 , H03B5/364 , H03J2200/10 , H01L2924/00

9. 发明公开

EP1720246A2 Piezoelectric oscillation circuit 审中-公开
标题翻译： Piezoelektrische Oszillatorschaltung
公开(公告)号：EP1720246A2
公开(公告)日：2006-11-08
申请号：EP06008778.0
申请日：2006-04-27
申请人： Epson Toyocom Corporation
发明人： Yamamoto, Takahiro
IPC分类号： H03B5/04 , H03B5/36
CPC分类号： H03B5/364 , H03B5/04 , H03B2200/0034 , H03B2200/0046
摘要： A piezoelectric oscillation circuit includes: a DC power supply; a stabilized power supply that stabilizes a voltage variation in a DC voltage supplied from the DC power supply; an oscillation circuit unit that uses a piezoelectric vibrator as a vibratory source; a buffer circuit unit to which an output signal output from the oscillation circuit unit is input, a plurality of stages of inverter circuits are connected in series, and a depletion type MOS transistor is connected to the last stage inverter circuit; an output amplification circuit that amplifies an output of the buffer circuit; an output level adjustment circuit that includes a plurality of MOS switches and resistive elements and adjusts an output level by varying a gate voltage of an Nch-transistor included in the output amplification circuit; a memory circuit that stores data for selecting one of the plurality of MOS switches; and a decoder that generates an analog signal to be input to the MOS switch on the basis of the data stored in the memory circuit.
摘要翻译：压电振荡电路包括：直流电源; 稳定的电源，稳定从直流电源提供的直流电压的电压变化; 使用压电振动器作为振动源的振荡电路单元; 输入从振荡电路单元输出的输出信号的缓冲电路单元，多级反相电路串联连接，耗尽型MOS晶体管连接到最后级反相电路; 输出放大电路，其对所述缓冲电路的输出进行放大; 输出电平调整电路，其包括多个MOS开关和电阻元件，并且通过改变包括在输出放大电路中的Nch晶体管的栅极电压来调节输出电平; 存储电路，存储用于选择所述多个MOS开关之一的数据; 以及解码器，其基于存储在存储器电路中的数据生成要输入到MOS开关的模拟信号。

10. 发明公开

EP1220107A3 Programmable digital device 无效转让
标题翻译：可编程数字装置
公开(公告)号：EP1220107A3
公开(公告)日：2005-01-05
申请号：EP01125550.2
申请日：2001-10-25
申请人： CYPRESS SEMICONDUCTOR CORPORATION
发明人： Snyder, Warren
IPC分类号： G06F15/78
CPC分类号： G06F1/32 , G06F1/08 , G06F15/7867 , H03B5/364 , H03K3/012 , H03K3/014 , H03K3/02315
摘要： A new digital configurable macro architecture is described. The digital configurable macro architecture is well suited for microcontroller or controller designs. In particular, the foundation of the digital configurable macro architecture is a programmable digital circuit block. In an embodiment, programmable digital circuit blocks are 8-bit circuit modules that can be programmed to perform any one of a variety of predetermined digital functions by changing the contents of a few registers therein, unlike a FPGA which is a generic device that can be programmed to perform any arbitrary digital function. Specifically, the circuit components of the programmable digital circuit block are designed for reuse in several of the predetermined digital functions such that to minimize the size of the programmable digital circuit block.

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