REFERENCE VOLTAGE GENERATORS FOR INTEGRATED CIRCUITS
    1.
    发明申请
    REFERENCE VOLTAGE GENERATORS FOR INTEGRATED CIRCUITS 有权
    集成电路参考电压发生器

    公开(公告)号:US20100308902A1

    公开(公告)日:2010-12-09

    申请号:US12762456

    申请日:2010-04-19

    IPC分类号: G05F1/10

    CPC分类号: G05F3/30 G05F3/20

    摘要: A reference voltage generator circuit may include at least one MOS transistor and at least one bipolar transistor coupled together to provide an electrical path from an input reference potential to an output of the generator circuit. The electrical path may extend through a gate-to-source path of the MOS transistor and further through a base-to-emitter path of the bipolar transistor. The MOS transistor may be biased by a bias current that is proportional to T2·μ(T), where T represents absolute temperature and μ(T) represents mobility of a MOS transistor in the bias current generator. Optionally, the reference voltage generator may include N MOS and M multiple bipolar transistors (N≧1, M≧1), and the output reference voltage may be N*VGS+M*VBE as compared to the input reference potential.

    摘要翻译: 参考电压发生器电路可以包括至少一个MOS晶体管和耦合在一起的至少一个双极晶体管,以提供从输入参考电位到发生器电路的输出的电路径。 电路可以延伸穿过MOS晶体管的栅极到源极的路径,并进一步穿过双极晶体管的基极到发射极的路径。 可以通过与T2·μ(T)成比例的偏置电流来偏置MOS晶体管,其中T表示绝对温度,μ(T)表示偏置电流发生器中MOS晶体管的迁移率。 可选地,参考电压发生器可以包括N个MOS和M个多极双极晶体管(N≥1,M≥1),并且与输入的参考电位相比,输出参考电压可以是N * VGS + M * VBE。

    Fast Class AB Output Stage
    2.
    发明申请
    Fast Class AB Output Stage 有权
    快速AB类输出级

    公开(公告)号:US20110163811A1

    公开(公告)日:2011-07-07

    申请号:US12652442

    申请日:2010-01-05

    IPC分类号: H03F3/18

    摘要: A system for a Class AB Amplifier output stage that includes a first push pull system connected to an output terminal including a first driving transistor coupled to the output terminal and a second push pull system connected to the output terminal including a second driving transistor coupled to the output terminal. The amplifier also includes a current mode amplifier where the current mode amplifier's output is coupled to the first driving transistor's gate. The amplifier further includes a pair of resistors, a first resistor coupled to a first input terminal of the current mode amplifier, a second resistor coupled to a second input terminal of the current mode amplifier and coupled to the second driving transistor.

    摘要翻译: 一种用于AB类放大器输出级的系统,包括连接到输出端的第一推挽系统,所述第一推挽系统包括耦合到所述输出端子的第一驱动晶体管和连接到所述输出端子的第二推挽系统,所述第二推挽系统包括耦合到所述输出端 输出端子。 放大器还包括电流模式放大器,其中电流模式放大器的输出耦合到第一驱动晶体管的栅极。 放大器还包括一对电阻器,耦合到电流模式放大器的第一输入端子的第一电阻器,耦合到电流模式放大器的第二输入端子并耦合到第二驱动晶体管的第二电阻器。

    HIGH POWER SUPPLY REJECTION RATIO (PSRR) AND LOW DROPOUT REGULATOR
    3.
    发明申请
    HIGH POWER SUPPLY REJECTION RATIO (PSRR) AND LOW DROPOUT REGULATOR 有权
    高功率抑制比(PSRR)和低压差型稳压器

    公开(公告)号:US20120223688A1

    公开(公告)日:2012-09-06

    申请号:US13112335

    申请日:2011-05-20

    IPC分类号: G05F1/10

    CPC分类号: G05F1/56 G05F3/262

    摘要: A low dropout voltage regulator (LDO) includes first and second amplifiers and a current mirror. The first amplifier includes a first input receiving a reference voltage and a second input receiving a voltage proportional to an output of the LDO. The current mirror includes an input current at a first end of the current mirror to an output current at a second end of the current mirror, the input current controlled by an output of the first amplifier and the output current being supplied to the output of the LDO. The second amplifier includes a first input coupled to the first end of the current mirror and a second input coupled to the second end of the current mirror.

    摘要翻译: 低压差稳压器(LDO)包括第一和第二放大器和电流镜。 第一放大器包括接收参考电压的第一输入端和接收与LDO的输出成正比的电压的第二输入端。 电流镜包括在电流镜的第一端处的输入电流到电流镜的第二端处的输出电流,由第一放大器的输出控制的输入电流和输出电流被提供给电流镜的输出 我愿意。 第二放大器包括耦合到电流镜的第一端的第一输入和耦合到电流镜的第二端的第二输入。

    LOW DROP OUT VOLTAGE REGULATOR
    4.
    发明申请
    LOW DROP OUT VOLTAGE REGULATOR 有权
    低压降稳压器

    公开(公告)号:US20140253067A1

    公开(公告)日:2014-09-11

    申请号:US13788917

    申请日:2013-03-07

    IPC分类号: G05F1/46

    CPC分类号: G05F1/575

    摘要: A low drop out voltage regulator comprising: a transistor having an input node, an output node, and a control node; a differential amplifier having an output connected to the control node of the transistor and having a first input node; and a feedback capacitor connected between the output node of the transistor and the first input of the differential amplifier, wherein a voltage at the output of the transistor is dependent on a charge across the feedback capacitor.

    摘要翻译: 一种低压降稳压器,包括:具有输入节点,输出节点和控制节点的晶体管; 差分放大器,具有连接到晶体管的控制节点并具有第一输入节点的输出; 以及连接在晶体管的输出节点和差分放大器的第一输入端之间的反馈电容器,其中晶体管的输出端的电压取决于反馈电容器两端的电荷。

    SYSTEM AND METHOD FOR MEASURING CAPACITANCE
    9.
    发明申请
    SYSTEM AND METHOD FOR MEASURING CAPACITANCE 有权
    用于测量电容的系统和方法

    公开(公告)号:US20110050255A1

    公开(公告)日:2011-03-03

    申请号:US12548540

    申请日:2009-08-27

    IPC分类号: G01R27/26

    CPC分类号: G01R27/2605

    摘要: A system and method for testing capacitance of a load circuit connected to an output pin of a driving circuit In one embodiment, the method may comprise driving a voltage at the output pin to a first voltage; a predetermined current to the output pin; comparing the voltage at the output pin to a reference voltage; and when the voltage at the output pin matches the reference voltage, generating an estimate of capacitance present at the output pin based on a number of clock cycles occurring between an onset of a timed voltage change period and a time at which the voltage at the output pin matches the reference voltage.

    摘要翻译: 一种用于测试连接到驱动电路的输出引脚的负载电路的电容的系统和方法。 在一个实施例中,该方法可以包括将输出引脚处的电压驱动到第一电压; 向输出引脚施加预定电流; 将输出引脚上的电压与参考电压进行比较; 并且当输出引脚上的电压与参考电压匹配时,基于在定时电压变化周期的开始与输出端之间的电压的时间之间发生的时钟周期数,产生输出引脚上存在的电容的估计 引脚匹配参考电压。