公开(公告)号：US07301389B2

公开(公告)日：2007-11-27

申请号：US10402618

申请日：2003-03-27

Applicant: Edmond Patrick Coady

Inventor： Edmond Patrick Coady

IPC: G05F1/10 ,  G05F3/02

CPC classification number: G05F3/30

Abstract: This band-gap circuit overcomes the deficiencies of conventional band-gap circuits by compensating for higher order temperature effects, thereby increasing accuracy. A first resistor network including two resistors is connect to a first transistor while a second resistor network that includes one resistor is connected to a second transistor. One resistor in the first resistor network has a high temperature sensitivity, and therefore produces a temperature dependent ratio of currents through the transistors. The inverting input and noninverting input of an operational amplifier are coupled to the collectors of the two transistors. The emitter region of the second transistor is coupled to two additional resistors which are connected in series to each other. The emitter region of the first transistor is coupled to the junction between these two additional resistors. The output of the operational amplifier is coupled to the bases of the transistors. Introducing a temperature dependent current ratio through the transistors allows for correction of higher order temperature terms previously ignored by prior art band-gap circuits.

Abstract translation: 该带隙电路通过补偿高阶温度效应来克服传统带隙电路的缺陷，从而提高精度。 包括两个电阻器的第一电阻器网络连接到第一晶体管，而包括一个电阻器的第二电阻器网络连接到第二晶体管。 第一个电阻网络中的一个电阻器具有高温度灵敏度，因此产生通过晶体管的电流的温度依赖比。 运算放大器的反相输入和同相输入耦合到两个晶体管的集电极。 第二晶体管的发射极区域被耦合到彼此串联连接的两个附加电阻器。 第一晶体管的发射极区域耦合到这两个附加电阻器之间的结。 运算放大器的输出耦合到晶体管的基极。 通过晶体管引入与温度相关的电流比允许校正先前技术的带隙电路以前忽略的高阶温度项。

公开(公告)号：US5867116A

公开(公告)日：1999-02-02

申请号：US682437

申请日：1996-07-17

Applicant: Katsufumi Nakamura ,  Edmond Patrick Coady

Inventor： Katsufumi Nakamura ,  Edmond Patrick Coady

IPC: H03M1/06 ,  H03M1/16 ,  H03M1/36

CPC classification number: H03M1/165 ,  H03M1/069 ,  H03M1/205 ,  H03M1/365

Abstract: In a multi-stage, multi-residue interpolating analog-to-digital converter (ADC), which is suitable for pipelined implementation, inputs of at least three amplifiers are "leapfrog" switched to adjacent nodes of a first interpolation ladder having discrete voltage levels established thereon. Pairs of the amplifiers drive second interpolation ladders to establish additional discrete voltage levels (in a nominal and an overlap conversion region) at nodes of the second interpolation ladders. A bank of comparators compares a predetermined threshold voltage, e.g., ground, to several of the discrete voltage levels at the nodes of the first interpolation ladder. The switches controlling which inputs of the amplifiers are connected to which nodes of the first interpolation ladder are controlled by a logic circuit which is driven by outputs of the bank of comparators. Alternatively, the bank of comparators compares an input voltage of the ADC to voltage levels established by the first interpolation ladder. In which case, the voltages at the nodes of the interpolation ladder to which the amplifiers are connected are amplified with respect to the input voltage of the ADC.

Abstract translation: 在适用于流水线实现的多级多残留内插模数转换器（ADC）中，至少三个放大器的输入“跨越”切换到具有离散电压电平的第一插值梯级的相邻节点 在其上建立。 对放大器驱动第二插值梯，以在第二插值梯的节点处建立额外的离散电压电平（在标称和重叠转换区域中）。 比较器组将预定阈值电压（例如接地）与第一内插梯的节点处的几个离散电压电平进行比较。 所述开关控制放大器的哪个输入端连接到第一插值梯形图的哪些节点由由比较器组的输出驱动的逻辑电路控制。 或者，比较器组将ADC的输入电压与由第一插值梯形图建立的电压电平进行比较。 在这种情况下，放大器所连接的内插梯的节点处的电压相对于ADC的输入电压被放大。

公开(公告)号：US06765431B1

公开(公告)日：2004-07-20

申请号：US10270865

申请日：2002-10-15

Applicant: Edmond Patrick Coady

Inventor： Edmond Patrick Coady

IPC: G05F302

CPC classification number: G05F3/30

Abstract: Low noise bandgap references of the type providing a temperature independent output by balancing the proportional to absolute temperature dependence of the difference in base-emitter voltages of two transistors operating at different current densities with the negative temperature coefficient of the base-emitter voltage of a transistor. The bandgap references disclosed reduce the noise characteristic of such references by balancing the difference in base-emitter voltages of a first number of pairs of transistors, each pair having two transistors operating at different current densities, with the negative temperature coefficient of the base-emitter voltage of a second number of transistors, the second number being less than the first number. Various embodiments are disclosed, including embodiments having an output corresponding to the bandgap of the transistor material, and multiples of the bandgap of the transistor material.

Abstract translation: 通过平衡两个以不同电流密度工作的两个晶体管的基极 - 发射极电压差与绝对温度的绝对温度依赖关系，提供一个独立于温度的输出的低噪声带隙基准与晶体管的基极 - 发射极电压的负温度系数 。 所公开的带隙参考通过平衡第一对晶体管对的基极 - 发射极电压的差异来降低这种参考的噪声特性，每对晶体管具有以不同电流密度工作的两个晶体管，基极 - 发射极的负温度系数 第二数量的晶体管的电压，第二数量小于第一数量。 公开了各种实施例，包括具有对应于晶体管材料的带隙的输出以及晶体管材料的带隙的倍数的实施例。

公开(公告)号：US06563370B2

公开(公告)日：2003-05-13

申请号：US09894850

申请日：2001-06-28

Applicant: Edmond Patrick Coady

Inventor： Edmond Patrick Coady

IPC: G05F110

CPC classification number: G05F3/30

Abstract: This band-gap circuit overcomes the deficiencies of conventional band-gap circuits by compensating for higher order temperature effects, thereby increasing accuracy. A first resistor network including two resistors is connect to a first transistor while a second resistor network that includes one resistor is connected to a second transistor. One resistor in the first resistor network has a high temperature sensitivity, and therefore produces a temperature dependent ratio of currents through the transistors. The inverting input and noninverting input of an operational amplifier are coupled to the collectors of the two transistors. The emitter region of the second transistor is coupled to two additional resistors which are connected in series to each other. The emitter region of the first transistor is coupled to the junction between these two additional resistors. The output of the operational amplifier is coupled to the bases of the transistors. Introducing a temperature dependent current ratio through the transistors allows for correction of higher order temperature terms previously ignored by prior art band-gap circuits.

Abstract translation: 该带隙电路通过补偿高阶温度效应来克服传统带隙电路的缺陷，从而提高精度。 包括两个电阻器的第一电阻器网络连接到第一晶体管，而包括一个电阻器的第二电阻器网络连接到第二晶体管。 第一个电阻网络中的一个电阻器具有高温度灵敏度，因此产生通过晶体管的电流的温度依赖比。 运算放大器的反相输入和同相输入耦合到两个晶体管的集电极。 第二晶体管的发射极区域被耦合到彼此串联连接的两个附加电阻器。 第一晶体管的发射极区域耦合到这两个附加电阻器之间的结。 运算放大器的输出耦合到晶体管的基极。 通过晶体管引入与温度相关的电流比允许校正先前技术的带隙电路以前忽略的高阶温度项。

公开(公告)号：US06570438B2

公开(公告)日：2003-05-27

申请号：US09976766

申请日：2001-10-12

Applicant: Edmond Patrick Coady

Inventor： Edmond Patrick Coady

IPC: G05F110

CPC classification number: G05F3/265

Abstract: Proportional to absolute temperature references having reduced input sensitivity. The references utilize four bipolar transistors, at least one of which is of a different size, coupled to a resistor in a loop, whereby the difference in the VBEs of the transistors appears as a voltage across the resistor. The addition of a further resistor of a selected size in the base circuit of one of the four transistors provides an input variation of an opposite sign to that caused by the finite base currents of the transistors, thereby substantially reducing the input voltage (current) dependence of the proportional to absolute temperature references. Various embodiments are disclosed.

Abstract translation: 与绝对温度基准的比例降低了输入灵敏度。 该参考文献使用四个双极晶体管，其至少一个具有不同的尺寸，耦合到环路中的电阻器，由此晶体管的VBE的差异表现为电阻器两端的电压。 在四个晶体管之一的基极电路中添加一个选定尺寸的另一个电阻器，提供与由晶体管的有限基极电流引起的相反符号的输入变化，从而大大降低输入电压（电流）依赖性 的绝对温度参考比例。 公开了各种实施例。