TY - JOUR
T1 - A 32-Gb/s C2C-DAC-Based PAM-4 Wireline Transmitter with Two-Tap Feed-Forward Equalization and Level-Mismatch Correction in 28-nm CMOS
AU - Hu, Boyu
AU - Kim, Yanghyo
AU - Huang, Rulin
AU - Du, Yuan
AU - Chang, Mau Chung Frank
N1 - Publisher Copyright:
© 2001-2012 IEEE.
PY - 2018/11
Y1 - 2018/11
N2 - This letter presents a C2C-DAC-based PAM-4 wireline transmitter that utilizes capacitor-weighting within a predriver stage for multitap multilevel signal summation in charge domain at the transmitter front end. Such a unique approach isolates the signal summing node from the output to alleviate bandwidth limitation and also inherently provides passive voltage-scaling and level-shifting at the predriver output without sacrificing its speed. A level-mismatch-correction scheme is adopted to effectively enhance PAM-4 signaling quality. Implemented in a 28-nm CMOS, the designed transmitter prototype achieves a peak data rate of 32 Gb/s and an energy efficiency of 2.1 mW/Gb/s.
AB - This letter presents a C2C-DAC-based PAM-4 wireline transmitter that utilizes capacitor-weighting within a predriver stage for multitap multilevel signal summation in charge domain at the transmitter front end. Such a unique approach isolates the signal summing node from the output to alleviate bandwidth limitation and also inherently provides passive voltage-scaling and level-shifting at the predriver output without sacrificing its speed. A level-mismatch-correction scheme is adopted to effectively enhance PAM-4 signaling quality. Implemented in a 28-nm CMOS, the designed transmitter prototype achieves a peak data rate of 32 Gb/s and an energy efficiency of 2.1 mW/Gb/s.
KW - C2C-DAC
KW - PAM-4
KW - feed-forward equalization
KW - level-mismatch correction
KW - transmitter
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U2 - 10.1109/LMWC.2018.2870931
DO - 10.1109/LMWC.2018.2870931
M3 - Article
AN - SCOPUS:85054390439
SN - 1531-1309
VL - 28
SP - 1056
EP - 1058
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 11
M1 - 8476164
ER -