Accurate sample latch offset compensation scheme

• Main Authors: ARCUDIA KENNETH LUIS, CHEN MINHAN
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; INFORMATION STORAGE; PHYSICS; STATIC STORES

A receiver according to one aspect comprises a latch configured to sample a data signal according to a sampling clock signal, and a plurality of offset-compensation segments, wherein each of the segments is coupled to an internal node of the latch. Each of the segments comprises a compensation transistor, and a step-adjustment transistor coupled in series with the compensation transistor. The receiver further comprises an offset controller configured to selectively turn on one or more of the compensations transistors to reduce an offset voltage of the latch, and a bias circuit configured to apply a bias voltage to a gate of each of one or more of the step-adjustment transistors. 根据个方面的种接收机包括：锁存器，其被配置成根据采样时钟信号来对数据信号进行采样；以及多个偏移补偿段，其中这些段中的每者被耦合到该锁存器的内部节点。这些段中的每者包括：补偿晶体管；以及与该补偿晶体管串联耦合的步进调节晶体管。该接收机进步包括：偏移控制器，其被配置成选择性地导通这些补偿晶体管中的者或多者以减小该锁存器的偏移电压；以及偏置电路，其被配置成向个或多个该步进调节晶体管中的每者的栅极施加偏置电压。