公开(公告)号：US08847628B1

公开(公告)日：2014-09-30

申请号：US13631933

申请日：2012-09-29

Applicant: Integrated Device Technology, Inc.

Inventor： Minhui Yan ,  Chien-Chen Chen ,  Harmeet Bhugra

IPC: H03K19/094 ,  H04L25/02

CPC classification number: H03K19/09432 ,  H04L25/0272

Abstract: Integrated circuit devices may utilize automatic methods for adjusting the tail currents of current mode logic (CML) cells, which compensate for variations in process corners and thereby enable reliable operation of high performance circuits, such as frequency synthesizers. An integrated circuit may include a current mode logic (CML) circuit responsive to at least one input signal and a variable current source electrically coupled to the CML circuit. This variable current source can be configured to sink (or source) a first current from (or to) the CML circuit in response to a control signal. A control circuit may also be provided, which is configured to generate the control signal in response to a process corner indication signal. This process corner indication signal, which may be generated by a process corner detection circuit, preferably has a magnitude that estimates a relative speed of a process corner associated with the integrated circuit device.

Abstract translation: 集成电路器件可以利用自动方法来调整电流模式逻辑（CML）单元的尾部电流，其补偿过程角的变化，从而使诸如频率合成器之类的高性能电路的可靠操作。 集成电路可以包括响应于至少一个输入信号的电流模式逻辑（CML）电路和电耦合到CML电路的可变电流源。 该可变电流源可以被配置为响应于控制信号吸收（或源）来自（或到）CML电路的第一电流。 还可以提供控制电路，其被配置为响应于处理转角指示信号而产生控制信号。 可以由过程拐角检测电路产生的该过程拐角指示信号优选地具有估计与集成电路器件相关联的过程角的相对速度的幅度。

公开(公告)号：US09090451B1

公开(公告)日：2015-07-28

申请号：US13837854

申请日：2013-03-15

Applicant: Integrated Device Technology, Inc.

Inventor： Wanling Pan ,  Harmeet Bhugra ,  Maryam Ziaei-Moayyed

IPC: H03B5/32 ,  H01L41/08 ,  B81B3/00 ,  H01L41/083

CPC classification number: B81B3/0021 ,  H01L41/083 ,  H03B21/01 ,  H03H9/02228 ,  H03H9/02448 ,  H03H2009/241

Abstract: A TPoS resonator includes a substrate and a resonator body suspended over the substrate by at least a first pair of fixed supports (e.g., tethers) that attach to first and second ends of the resonator body. The resonator body includes monocrystalline silicon, which has a [100] crystallographic orientation that is offset by ±α degrees relative to a nodal line of the resonator body (e.g., tether-to-tether axis) when the resonator body is operating at a resonant frequency, where a is a real number in a range from about 5 to about 19 and, more preferably, in a range from about 7 to about 17. The resonator may be an extensional-mode resonator and the resonator body may be rectangular-shaped with unequal length and width dimensions.

Abstract translation: TPoS谐振器包括衬底和谐振器体，所述谐振器体通过附接到谐振器本体的第一和第二端的至少第一对固定支撑件（例如系绳）悬挂在衬底上。 谐振器主体包括单晶硅，当谐振器主体以谐振器工作时，其具有相对于谐振器主体的节点线（例如，系绳至系绳轴线）偏移±α度的[100]晶体取向 频率，其中a是在约5至约19的范围内的实数，更优选在约7至约17的范围内。谐振器可以是延伸模式谐振器，并且谐振器体可以是矩形 具有不等长度和宽度尺寸。

公开(公告)号：US09000853B1

公开(公告)日：2015-04-07

申请号：US13849999

申请日：2013-03-25

Applicant: Integrated Device Technology, Inc.

Inventor： Nelson Arata ,  Harmeet Bhugra

IPC: H03B5/30 ,  H03L7/16 ,  H03B5/18

CPC classification number: H03B5/1852 ,  H03B5/30 ,  H03L7/197

Abstract: Integrated circuit devices include a packaged MEMS-based oscillator circuit, which is configured to support bidirectional frequency margining of a periodic output signal. This bidirectional frequency margining is achieved using a first signal to synchronize changes in a frequency of the periodic output signal and a second signal to control whether the changes in the frequency of the periodic output signal are incremental or decremental. In particular, the oscillator circuit may be configured so that each change in the frequency of the periodic output signal is synchronized to a corresponding first voltage transition of the first signal and a voltage level of the second signal may be used to control whether the changes in the frequency of the periodic output signal are incremental or decremental.

Abstract translation: 集成电路器件包括封装的基于MEMS的振荡器电路，其被配置为支持周期性输出信号的双向频率裕度。 使用第一信号来实现该双向频率裕度，以使周期性输出信号的频率的变化同步第二信号，以控制周期性输出信号的频率的变化是递增的还是递减的。 特别地，振荡器电路可以被配置为使得周期性输出信号的频率的每个变化被同步到第一信号的对应的第一电压转换，并且第二信号的电压电平可以用于控制是否改变 周期性输出信号的频率是递增或递减的。

公开(公告)号：US08803622B1

公开(公告)日：2014-08-12

申请号：US13629732

申请日：2012-09-28

Applicant: Integrated Device Technology, Inc.

Inventor： Minhui Yan ,  Chien-Chen Chen ,  Harmeet Bhugra

IPC: H03B5/36

CPC classification number: H03B5/36 ,  H03B5/06

Abstract: Oscillator circuits include a MEMs resonator, a variable impedance circuit (e.g., varistor) and an adjustable gain amplifier. The variable impedance circuit includes a first terminal electrically coupled to a first terminal of the MEMs resonator and the adjustable gain amplifier is electrically coupled to the variable impedance circuit. The adjustable gain amplifier may have an input terminal electrically coupled to the variable impedance circuit and a second terminal of the MEMs resonator may receive, as feedback, a signal derived from an output of the adjustable gain amplifier. A Q-factor control circuit may be provided, which is configured to drive the variable impedance circuit and the adjustable gain amplifier with first and second control signals, respectively, that cause an impedance of the variable impedance circuit and a gain of the adjustable gain amplifier to be relatively high during a start-up time interval and relatively low during a post start-up time interval.

Abstract translation: 振荡器电路包括MEM谐振器，可变阻抗电路（例如，变阻器）和可调增益放大器。 可变阻抗电路包括电耦合到MEM谐振器的第一端子的第一端子，并且可调增益放大器电耦合到可变阻抗电路。 可调增益放大器可以具有电耦合到可变阻抗电路的输入端子，并且MEM谐振器的第二端子可以接收从可调增益放大器的输出导出的信号作为反馈。 可以提供Q因子控制电路，其被配置为分别引起可变阻抗电路的阻抗和可调增益放大器的增益的第一和第二控制信号驱动可变阻抗电路和可调增益放大器 在启动时间间隔期间相对较高，并且在后启动时间间隔期间相对较低。