公开(公告)号：US07215185B2

公开(公告)日：2007-05-08

申请号：US11138946

申请日：2005-05-26

Applicant: Donald Cook Richardson

Inventor： Donald Cook Richardson

IPC: G05F1/10

CPC classification number: G05F1/465 ,  G11C16/06 ,  H03K3/0231 ,  H03K4/502 ,  H03K17/302 ,  H03K2005/00123

Abstract: A system for providing a threshold voltage (VT) includes a VT extractor that extracts the VT for a MOS transistor relative to a first voltage rail. An inversion circuit inverts the extracted VT (e.g., VT+VIN) relative to a reference voltage that is intermediate the first voltage rail and a second voltage rail and provides an output corresponding to the VT (e.g., VT+VIN) relative to the second voltage rail. The relative voltages at the voltage rails generally will depend on whether the VT is being extracted for a p-channel MOS transistor or an n-channel MOS transistor. The VT can be employed to generate a ramp voltage across a capacitor formed of another MOS transistor.

Abstract translation: 用于提供阈值电压（V SUB T）的系统包括提取MOS晶体管相对于第一电压的V SUB T提取器的V SUB提取器 电压轨。 反相电路相对于在第一电压轨之间的参考电压使提取的V SUB（例如，V SUB T + V IN IN）反相 和第二电压轨，并且相对于第二电压轨提供对应于V SUB（例如，V IN T + V IN IN IN）的输出 。 电压轨上的相对电压通常取决于是否为p沟道MOS晶体管或n沟道MOS晶体管提取V SUB。 可以采用V SUB来产生由另一MOS晶体管形成的电容器两端的斜坡电压。

公开(公告)号：US07400128B2

公开(公告)日：2008-07-15

申请号：US11221164

申请日：2005-09-07

Applicant: Donald Cook Richardson

Inventor： Donald Cook Richardson

IPC: G05F3/26 ,  G05F3/24

CPC classification number: G05F3/30

Abstract: A circuit and method for reducing the variation of a reference voltage as a function of resistivity ρ in a current-mode bandgap reference circuit generating a reference current that is applied to an output resistor to generate the reference voltage. According to the invention, a substantially constant current is generated and added to the reference current.

Abstract translation: 一种用于减小作为电流模式带隙基准电路中的电阻率rho的函数的参考电压的变化的电路和方法，该电路产生施加到输出电阻器以产生参考电压的参考电流。 根据本发明，产生基本恒定的电流并将其加到参考电流上。