公开(公告)号：US20140247035A1

公开(公告)日：2014-09-04

申请号：US13784681

申请日：2013-03-04

Applicant: STMicroelectronics International N.V.

Inventor： Nitin GUPTA ,  Abhirup LAHIRI

IPC: G05F3/02

CPC classification number: G05F3/262 ,  G05F3/02

Abstract: A current mirror circuit provides a current to drive a load. A noise cancelling circuit is provided to keep the load current constant in spite of variations in the supply voltage. The noise cancelling circuit includes an auxiliary current path which branches from the load current path. The length-to-width ratios of transistors of the circuit are selected to provide the desired noise cancellation while maintaining device stability.

Abstract translation: 电流镜电路提供电流来驱动负载。 提供噪声消除电路以保持负载电流恒定，尽管电源电压的变化。 噪声消除电路包括从负载电流路径分支的辅助电流路径。 选择电路的晶体管的长宽比来提供期望的噪声消除，同时保持器件的稳定性。

公开(公告)号：US20150370281A1

公开(公告)日：2015-12-24

申请号：US14839693

申请日：2015-08-28

Applicant: STMicroelectronics International N.V.

Inventor： Nitin GUPTA ,  Abhirup LAHIRI

IPC: G05F3/26

CPC classification number: G05F3/262 ,  G05F3/02

Abstract: A current mirror circuit provides a current to drive a load. A noise cancelling circuit is provided to keep the load current constant in spite of variations in the supply voltage. The noise cancelling circuit includes an auxiliary current path which branches from the load current path. The length-to-width ratios of transistors of the circuit are selected to provide the desired noise cancellation while maintaining device stability.

Abstract translation: 电流镜电路提供电流来驱动负载。 提供噪声消除电路以保持负载电流恒定，尽管电源电压的变化。 噪声消除电路包括从负载电流路径分支的辅助电流路径。 选择电路的晶体管的长宽比来提供期望的噪声消除，同时保持器件的稳定性。