PROGRAMMABLE ELECTRONIC TRIM CAPACITOR
    92.
    发明申请
    PROGRAMMABLE ELECTRONIC TRIM CAPACITOR 审中-公开
    可编程电子TRIM电容器

    公开(公告)号:WO01056164A1

    公开(公告)日:2001-08-02

    申请号:PCT/US2001/002557

    申请日:2001-01-25

    Abstract: An electronically trimable capacitor (10) having a plurality of branch circuits (30) each including a capacitor (32) which may be selectively controlled by a switch (34) to contribute or not to the net capacitance exhibited by the trimable capacitor (10). Operation of the switches (34) is under direction of an interface (36), which can receive a program signal containing digital instruction for programming via a program terminal (22). An optional memory (38) permits storing a program of states for the switches (34), so that the interface (36) may be instructed to reset the switches (34) and thus cause the trimable capacitor (10) again provide a previously programmed net capacitance, say, in the event of power on or a power loss. An optional enable terminal (24) provides protection against inadvertent programming.

    Abstract translation: 一种具有多个分支电路(30)的电子可调电容器(10),每个分支电路(30)均包括可由开关(34)选择性控制的电容器(32),用于对可修整电容器(10)所呈现的净电容作出贡献, 。 开关(34)的操作在接口(36)的方向上,其可以接收包含用于经由程序终端(22)编程的数字指令的程序信号。 可选择的存储器(38)允许存储用于开关(34)的状态程序,使得可以指示接口(36)复位开关(34),并且因此使可修剪电容器(10)再次提供先前编程的 净电容,例如在上电或掉电的情况下。 可选的使能端子(24)提供防止无意编程的保护。

    高周波発振器および電子機器

    公开(公告)号:JPWO2007119276A1

    公开(公告)日:2009-08-27

    申请号:JP2007539402

    申请日:2007-01-23

    Abstract: 第1,第2の共振回路2,3には第1,第2の増幅回路4,5をそれぞれ接続する。また、選択回路6を第1,第2のスイッチ回路7,8等によって構成し、第1,第2のスイッチ回路7,8を用いて第1,第2の増幅回路4,5を選択的に動作させる。また、第1,第2の増幅回路4,5の出力側には、これらで共通に使用する接地用コンデンサC4を接続する。一方、第1のスイッチ回路7には第1の増幅回路4との間に位置して、補助の接地用コンデンサC14を接続する。これにより、第1の増幅回路4が動作するときだけ、接地用コンデンサC4に補助の接地用コンデンサC14を並列接続することができる。

    Crystal oscillator
    97.
    发明专利
    Crystal oscillator 有权
    水晶振荡器

    公开(公告)号:JP2003037438A

    公开(公告)日:2003-02-07

    申请号:JP2001223595

    申请日:2001-07-24

    CPC classification number: H03B5/368 H03B2201/0266

    Abstract: PROBLEM TO BE SOLVED: To provide a crystal oscillator which can be easily integrated by enlarging a frequency variable region. SOLUTION: The crystal oscillator, in which the oscillation capacitors are respectively connected to both ends of a crystal vibrator forming a resonance circuit and grounded to reference potentials, has a constitution, in such a way that an adjusting capacity capable of being freely switched is connected to the capacitors in parallel. At least one of the capacitors is a voltage control type, so as to be used as a variable voltage capacitive element. A variable capacitive element is inserted, either in between connection terminals of the vibrator and the capacitance or in between connection terminals of the vibrator and the parallel circuit of the capacitors to form a voltage control type.

    Abstract translation: 要解决的问题:提供一种通过扩大频率可变区域可以容易地集成的晶体振荡器。 解决方案:其中振荡电容器分别连接到形成谐振电路并接地到参考电位的晶体振子的两端的晶体振荡器具有这样的结构,使得能够自由切换的调节能力被连接 并联电容器。 至少一个电容器是电压控制型,以便用作可变电压电容元件。 可变电容元件插入在振动器的连接端子和电容之间,或在振动器的连接端子和电容器的并联电路之间插入,以形成电压控制型。

    실시간 클록 애플리케이션들을 위한 초 저-전력 고주파수 크리스탈 발진기
    99.
    发明授权
    실시간 클록 애플리케이션들을 위한 초 저-전력 고주파수 크리스탈 발진기 有权
    - 用于实时时钟应用的超低功耗高频晶体振荡器

    公开(公告)号:KR101701258B1

    公开(公告)日:2017-02-01

    申请号:KR1020167013785

    申请日:2014-10-17

    Abstract: 발진기회로는, 모드신호에대한응답으로정상모드와저-전력모드사이에서선택적으로스위칭할수 있다. 정상모드동안, 발진기회로는, 비교적낮은주파수에러를갖는고-정확도클록신호를생성하기위해, 제 1 증폭기구성및 제 1 용량성로딩을이용할수 있다. 저전력모드동안, 발진기회로는, 최소의전력소모를사용하여저-전력클록신호를생성하기위해, 제 2 증폭기구성및 제 2 용량성로딩을이용할수 있다. 보상회로는, 저-전력모드동안비교적높은주파수에러를오프셋하기위해사용될수 있다.

    Abstract translation: 响应于模式信号,振荡器电路可以选择性地在正常模式和低功率模式之间切换。 在正常模式期间,振荡器电路可以采用第一放大器配置和第一容性负载来产生具有相对较低频率误差的高精度时钟信号。 在低功率模式期间,振荡器电路可采用第二放大器配置和第二容性负载,以使用最小功耗生成低功率时钟信号。 补偿电路可以用于在低功率模式期间抵消相对较高的频率误差。

    전압 제어 발진기용 프로그램 가능 커패시터 뱅크
    100.
    发明公开
    전압 제어 발진기용 프로그램 가능 커패시터 뱅크 有权
    用于电压控制振荡器的可编程电容器库

    公开(公告)号:KR1020060129095A

    公开(公告)日:2006-12-14

    申请号:KR1020067022717

    申请日:2005-03-03

    Abstract: A programmable capacitor bank includes multiple tuning elements (510y). Each tuning element includes two tuning capacitors (513y, 514y) and a pass transistor (516y) that electrically connects or disconnects the capacitors to/from common nodes. (V1z, Vrz, V1y, Vry) For a thermometer decoded capacitor bank, the tuning capacitors for all tuning elements have equal capacitance. (Ct) Each tuning element further includes at least one pull-up transistor (522y, 524y) that provides high bias voltage for the pass transistor and at least one pull- down transistor (526y, 528y) that provides low bias voltage for the pass transistor. The multiple tuning elements may be arranged in a ladder topology such that (1) the tuning elements are turned on in sequential order starting from one end of the ladder and going toward the other end of the ladder and (2) each tuning element receives biasing from a preceding tuning element and provides biasing to a succeeding tuning element. The capacitor bank may be used for VCOs and other circuits.

    Abstract translation: 可编程电容器组包括多个调谐元件(510y)。 每个调谐元件包括两个调谐电容器(513y,514y)和将电容器与公共节点电连接或断开的传输晶体管(516y)。 (V1z,Vrz,V1y,Vry)对于温度计解码电容器组,用于所有调谐元件的调谐电容器具有相等的电容。 (Ct)每个调谐元件还包括为传递晶体管提供高偏置电压的至少一个上拉晶体管(522y,524y)以及为通过提供低偏置电压的至少一个下拉晶体管(526y,528y) 晶体管。 多个调谐元件可以被布置成梯形拓扑结构,使得(1)调谐元件从梯子的一端开始并且朝着梯子的另一端顺序地接通,并且(2)每个调谐元件接收偏置 并且向后续的调谐元件提供偏置。 电容器组可用于VCO和其他电路。

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