公开(公告)号：US06788041B2

公开(公告)日：2004-09-07

申请号：US10008442

申请日：2001-12-06

申请人： Ionel Gheorghe ,  Florinel G. Balteanu

发明人： Ionel Gheorghe ,  Florinel G. Balteanu

IPC分类号： G05F316

CPC分类号： G05F3/30

摘要： A bandgap reference circuit for generating a reference voltage includes a transistor, a bias current source for generating a bias current, a proportional to absolute temperature (PTAT) current source for generating a PTAT current, a first resistor, and a second resistor. The transistor generates a base-emitter voltage that is divided at an output node through the first and second resistors. The first resistor couples between the collector of the transistor and the output node. The second resistor couples between the output node and ground. The bias current source supplies the bias current to the transistor and the PTAT current source supplies a PTAT current to output node 105. The reference voltage may be obtained at output node as a result of combining a portion of the base-emitter voltage, which has a negative temperature coefficient, with a PTAT voltage that is obtained by sensing a portion of the PTAT current over the second resistor.

摘要翻译： 用于产生参考电压的带隙参考电路包括晶体管，用于产生偏置电流的偏置电流源，用于产生PTAT电流的绝对温度（PTAT）电流源的比例，第一电阻器和第二电阻器。 晶体管产生通过第一和第二电阻器在输出节点处被划分的基极 - 发射极电压。 第一个电阻耦合在晶体管的集电极和输出节点之间。 第二个电阻耦合在输出节点和地之间。 偏置电流源将偏置电流提供给晶体管，并且PTAT电流源向输出节点105提供PTAT电流。参考电压可以在输出节点获得，作为组合基极 - 发射极电压的一部分的结果， 具有通过感测PTAT电流的一部分在第二电阻器上获得的PTAT电压的负温度系数。

公开(公告)号：US06750641B1

公开(公告)日：2004-06-15

申请号：US10456043

申请日：2003-06-05

申请人： Vadim V. Ivanov ,  Igor M. Filanovsky

发明人： Vadim V. Ivanov ,  Igor M. Filanovsky

IPC分类号： G05F316

CPC分类号： G05F3/30

摘要： An exemplary method and circuit for temperature nonlinearity compensation and trimming of a voltage reference are configured to provide for two-point independent trimming of each of the curvature coefficients within the Taylor approximation curve. A voltage reference circuit is configured with a translinear circuit having an input current source. The translinear circuit comprises a translinear unit having a plurality of output currents corresponding to the curvature coefficients of the Taylor row approximation curve, with the output currents coupled to a control input terminal of the voltage reference. During trimming, at a first nominal temperature, the input current source is trimmed to a zero value, and each of the curvature terms of the Taylor approximation will be equal to zero value. At a second temperature the plurality of output currents of the translinear circuit can be measured to enable independent trimming of each of the curvature coefficients such that the output currents of the translinear circuit are made substantially equal to predetermined values. Thus, each of the coefficients of the Taylor approximation curve are independently trimmed to pass through zero at the first temperature and through the predetermined values at the second temperature without regard from one voltage reference circuit to another.

摘要翻译： 用于温度非线性补偿和调整电压参考的示例性方法和电路被配置为提供泰勒近似曲线内的每个曲率系数的两点独立修整。 电压参考电路配置有具有输入电流源的跨线电路。 所述跨导线路电路包括具有对应于泰勒行近似曲线的曲率系数的多个输出电流的跨线性单元，其输出电流耦合到电压基准的控制输入端。 在修整期间，在第一标称温度下，输入电流源被修整为零值，并且泰勒近似的每个曲率项将等于零值。 在第二温度下，可以测量跨导线路电路的多个输出电流，以便能够独立地修整每个曲率系数，使得跨导线路电路的输出电流基本上等于预定值。 因此，泰勒近似曲线的每个系数被独立地修整为在第一温度下通过零，并且在第二温度下通过预定值，而不考虑从一个电压参考电路到另一个参考电路。

公开(公告)号：US06737849B2

公开(公告)日：2004-05-18

申请号：US10173628

申请日：2002-06-19

申请人： Aria Eshraghi ,  Xiaodong Wang

发明人： Aria Eshraghi ,  Xiaodong Wang

IPC分类号： G05F316

CPC分类号： G05F3/30 ,  Y10S323/907

摘要： A bandgap circuit for producing a constant current having a controllable temperature coefficient. A current mirror supplies first and second substantially identical currents to first and second bipolar transistors. A first resistor is connected across the emitters of the bipolar transistors. A second resistor connects one to the bipolar emitters to a common terminal where the current source currents are recombined and supplied to a common terminal of a power supply. The band gap voltage produced at the common base connections of the bipolar transistors have a voltage temperature coefficient which is controlled by the values of the resistors. A current source is coupled to receive the bandgap voltage and produces a current having a temperature coefficient corresponding to the voltage temperature coefficient of the bandgap voltage.

摘要翻译： 一种用于产生具有可控温度系数的恒定电流的带隙电路。 电流镜向第一和第二双极晶体管提供第一和第二基本相同的电流。 第一电阻器连接在双极晶体管的发射极之间。 第二个电阻将一个与双极发射极连接到公共端，其中电流源电流被重组并提供给电源的公共端。 在双极晶体管的公共基极连接处产生的带隙电压具有由电阻器的值控制的电压温度系数。 耦合电流源以接收带隙电压并产生具有对应于带隙电压的电压温度系数的温度系数的电流。

公开(公告)号：US06713996B2

公开(公告)日：2004-03-30

申请号：US10230355

申请日：2002-08-28

申请人： Ercole Di Iorio

发明人： Ercole Di Iorio

IPC分类号： G05F316

CPC分类号： G11C5/147 ,  G11C16/30

摘要： A reference voltage source for an integrated circuit includes a first voltage reference that is adjustable, a second voltage reference, a differential sensing device to compare a voltage provided by the first voltage reference to a voltage provided by the second voltage reference, a controller to provide a trim control signal to the first voltage reference in response to an output of the differential sensing device for adjusting the first voltage reference and to provide a signal to power down the second voltage reference after the first voltage reference has been adjusted.

摘要翻译： 用于集成电路的参考电压源包括可调节的第一电压基准，第二参考电压，差分感测装置，用于将由第一参考电压提供的电压与由第二参考电压提供的电压进行比较，控制器提供 响应于用于调整第一参考电压的差分感测装置的输出，提供到第一参考电压的调整控制信号，并且在调整了第一参考电压之后提供一个信号以使第二参考电压下降。

公开(公告)号：US06605932B2

公开(公告)日：2003-08-12

申请号：US10017414

申请日：2001-12-18

申请人： Hisatake Sato

发明人： Hisatake Sato

IPC分类号： G05F316

CPC分类号： H02M3/073

摘要： A boost voltage circuit includes a plurality of N channel type MOS transistors connected between an input terminal and an output terminal in series, wherein one electrode of each of the N channel type MOS transistors is connected to each of external terminals to which a capacitor can be connected, to generate a boost voltage. A plurality of P channel type MOS transistors are respectively connected to each of the N channel type MOS transistors in parallel. Thereby, a boost voltage circuit with improved stability is provided so that the boost voltage circuit is started without increase of consumption current.

摘要翻译： 升压电路包括串联连接在输入端子和输出端子之间的多个N沟道型MOS晶体管，其中N沟道型MOS晶体管中的每一个的一个电极连接到电容器可以是的每个外部端子 连接，以产生升压电压。 多个P沟道型MOS晶体管分别并联连接到每个N沟道型MOS晶体管。 由此，提供了具有改善的稳定性的升压电压电路，使得升压电压电路在不增加消耗电流的情况下启动。

公开(公告)号：US06600304B2

公开(公告)日：2003-07-29

申请号：US09998147

申请日：2001-11-30

申请人： Nam-Keal Kim

发明人： Nam-Keal Kim

IPC分类号： G05F316

CPC分类号： G05F3/262

摘要： A current generating circuit includes a first resistance inversely proportional current generator, a second resistance inversely proportional current generator, and a current subtractor. The first resistance inversely proportional current generator has a first resistance element, and generates a first current which is inversely proportional to resistance variation of the first resistance element. The second resistance inversely proportional current generator has second and third resistance elements of the same type as the first resistance element, and generates a second current which is inversely proportional to half of the resistance variation. The current subtractor subtracts the first current from the second current to output a constant current regardless of the resistance variation of the first to third resistance elements.

公开(公告)号：US06566852B2

公开(公告)日：2003-05-20

申请号：US09921870

申请日：2001-08-06

申请人： Hitoyuki Tagami ,  Koichi Takizawa

发明人： Hitoyuki Tagami ,  Koichi Takizawa

IPC分类号： G05F316

CPC分类号： G05F1/575 ,  G05F3/265

摘要： The voltage generator includes the NPN transistor that flows a current corresponding to a voltage VOP output from the error detector. Furthermore, there is provided the current mirror circuit which includes two PNP transistors that flow currents which are multiples of the current that the NPN transistor flows. Furthermore, there are provided two resistors for generating a feedback voltage VFBK to the error detector from an output voltage VREG generated based on a current that the current mirror circuit flows.

公开(公告)号：US06566851B1

公开(公告)日：2003-05-20

申请号：US09636009

申请日：2000-08-10

申请人： Robert John Schuelke ,  Kevin P. Beaudoin

发明人： Robert John Schuelke ,  Kevin P. Beaudoin

IPC分类号： G05F316

CPC分类号： G05F3/262

摘要： A high-speed current mirror and correction circuitry are provided to minimize current errors in short-channel MOS switched current mirrors. The current mirror supplies high current levels at high modulation speeds, while simultaneously exhibiting good output voltage compliance. The correction circuitry includes a buffer amplifier, current shaping circuit, and replica mirror section. The current shaping circuit is able to supply a differential reference current, to correct load current errors, in response to the replica mirror section matching the buffered load voltage.

摘要翻译： 提供高速电流镜和校正电路以最小化短通道MOS开关电流镜中的电流误差。 电流镜在高调制速度下提供高电流，同时表现出良好的输出电压一致性。 校正电路包括缓冲放大器，电流整形电路和复制镜部分。 响应于与缓冲负载电压匹配的复制镜部分，当前整形电路能够提供差分参考电流以校正负载电流误差。

公开(公告)号：US06548994B2

公开(公告)日：2003-04-15

申请号：US09993817

申请日：2001-11-14

申请人： Seong-jin Jang

发明人： Seong-jin Jang

IPC分类号： G05F316

CPC分类号： G05F1/56 ,  Y10S323/907

摘要： A reference voltage generator capable of stably generating a reference voltage irrespective of temperature variations is provided. The reference voltage generator includes a voltage bias unit having a plurality of resistors and a first group of transistors serially connected between a power supply voltage node and a ground voltage node, a reference voltage node connected to one of the plurality of resistors or transistors to produce a preliminary reference voltage; a voltage controller connected between the preliminary reference voltage node and the ground voltage node; a temperature compensator having a second group of transistors serially connected between the preliminary reference voltage node and a reference voltage node to produce a reference voltage; and a voltage compensator having a third group of transistors serially connected between the reference voltage node and the ground voltage node for controlling the reference voltage. The temperature compensator compensates for temperature variation and the voltage compensator maintains the reference voltage at a predetermined value regardless of the temperature variation. Thus, the reference voltage generator can generate a stable reference voltage.

公开(公告)号：US06528979B2

公开(公告)日：2003-03-04

申请号：US10071022

申请日：2002-02-08

申请人： Katsuji Kimura

发明人： Katsuji Kimura

IPC分类号： G05F316

CPC分类号： G05F3/267 ,  G05F3/262 ,  G05F3/265 ,  G05F3/30 ,  Y10S323/907

摘要： There is disclosed a reference current circuit capable of preventing an appearance of the effect of the Early voltage, operated from a low power supply voltage, and adapted to output a current having a positive or optional temperature characteristic. In this reference current circuit, by a self-biased method, a current of a current mirror circuit is set to be proportional or substantially inversely proportional to a temperature by first and second transistors constituting a non-linear current mirror circuit. A third transistor is provided. A current of the third transistor proportional to a third voltage between a control terminal and a current input terminal is set to be substantially inversely proportional to the temperature, and the currents of the current mirror circuit and the third transistor are weighted and added. Thus, an output current having a fixed temperature current is obtained.