A 20Gb/s/pin Single-ended Transmitter with FEXT Compensation Technique
2021
A 20 Gb/s/pin single-ended transmitter with far end crosstalk (FEXT) compensation technique is proposed. The capacitive peaking driver (CPD) compensates the FEXT. Using the data before serializer in each transmitter, effect of FEXT is predicted. So, the difference of latency between data for compensation and transmission is eliminated. The delay of data for compensating FEXT adjusted, thereby it is possible to have optimal eye-opening for different flying-times between adjacent channels. The proposed architecture is designed with 65nm CMOS process. The designed transmitter has eye-opening of width with 39.3 ps and height with 43.2 mV at supply voltage of 1-V.
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