公开(公告)号：US20140300984A1

公开(公告)日：2014-10-09

申请号：US13859617

申请日：2013-04-09

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Rajarshi Mukhopadhyay ,  Matthew D. Rowley

IPC: G11B5/09

CPC classification number: G11B5/09 ,  G11B5/022

Abstract: Method and circuits for cancelling reflected waves from a load are disclosed. An embodiment of the method includes transmitting a signal to the bad from a current source, wherein a transistor is connected in parallel with the current source at a node. The transistor is biased so that a reflected wave at the node will cause the drain to source voltage of the transistor to increase. The drain current of the first transistor increases by way of channel length modulation when the drain to source voltage increases, the increased drain current cancels the reflected wave.

Abstract translation: 公开了用于抵消来自负载的反射波的方法和电路。 该方法的一个实施例包括从电流源向坏的发送信号，其中晶体管与节点处的电流源并联连接。 晶体管被偏置，使得节点处的反射波将导致晶体管的漏极源电压增加。 当漏极到源极电压增加时，第一晶体管的漏极电流增加通过沟道长度调制，增加的漏极电流消除反射波。