公开(公告)号：US11881969B2

公开(公告)日：2024-01-23

申请号：US17885001

申请日：2022-08-10

Applicant: Samsung Display Co., Ltd.

Inventor： Anup P Jose ,  Sam Ray ,  Ali Fazli Yeknami ,  Amir Amirkhany

IPC: H04L25/02 ,  H04L25/03 ,  H03M1/10 ,  H04L27/00

CPC classification number: H04L25/0292 ,  H03M1/1009 ,  H04L25/028 ,  H04L25/03878 ,  H04L27/0002

Abstract: A receiver for a serial data link, including an analog front end (AFE) including a continuous-time linear equalizer (CTLE) configured to receive an input signal from a transmitter, the CTLE including a first output node; a second output node; a plurality of programmable tail current sources configured to adjust a direct current (DC) offset between the first output node and the second output node; and a calibration circuit including: a slicer configured to output a difference between a first average output voltage corresponding to the first output node and a second average output, voltage corresponding to the second output node; and a calibration counter configured to increment or decrement an offset count based on the difference, wherein the plurality of programmable tail current sources are adjusted based on a value of the offset count.