← 返回 JSSC 论文列表JSSC 2021第4期RF & Wireless65nmPAM-4
A 064-pJBit 28-GbsPin High-Linearity Single- Ended PAM-4 Transmitter With an Imp
一款高线性度单端PAM-4发射器，通过阻抗匹配和三端ZQ校准实现28Gbps/pin传输
65nm CMOS, 0.0333mm², 0.64pJ/bit, 28Gb/s/pin
PAM-4发射器阻抗匹配ZQ校准电压模式驱动器前馈均衡
▸阻抗匹配PAM-4驱动器结合三端ZQ校准方案
▸电压模式驱动器省去电阻电感减小面积
▸两抽头非对称前馈均衡分配六种系数补偿非线性
Abstract
A single-ended four-level pulse-amplitude modula-
tion (PAM-4) transmitter (TX) for memory interfaces achieves
high signal integrity by combining an impedance-matched
PAM-4 driver with a three-point ZQ calibration scheme. This
improves PAM-4 linearity by allowing the driver to compen-
sate for its impedance variation caused by the change in the
drain–source voltage ( V
DS) to suit the four output levels consid-
ering both the TX and the receiver (RX). Resistors and inductors
are eliminated from