公开(公告)号：US09337789B2

公开(公告)日：2016-05-10

申请号：US14048750

申请日：2013-10-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Weicheng Zhang ,  Huanzhang Huang ,  Yanli Fan ,  Mark W. Morgan

IPC: H03F3/45

CPC classification number: H03F3/45219 ,  H03F3/45632 ,  H03F2203/45466 ,  H03F2203/45646 ,  H03F2203/45648

Abstract: A differential receiver with reduced common mode induced propagation delay variance. One implementation of a differential receiver includes a first differential amplifier, a second differential amplifier, and a first current source. The first differential amplifier includes a first transistor pair. The second differential amplifier includes a second transistor pair. The first current source is coupled to a drain node of a first transistor of the first transistor pair. The first current source is configured to generate a variable first current at the drain node as of function of a sum of a variable tail current of the first differential amplifier and a variable tail current of the second differential amplifier.

Abstract translation: 具有降低的共模感应传播延迟方差的差分接收机。 差分接收机的一个实施方式包括第一差分放大器，第二差分放大器和第一电流源。 第一差分放大器包括第一晶体管对。 第二差分放大器包括第二晶体管对。 第一电流源耦合到第一晶体管对的第一晶体管的漏极节点。 第一电流源被配置为根据第一差分放大器的可变尾电流和第二差分放大器的可变尾电流的和的函数，在漏极节点处产生可变的第一电流。