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A 1.62/2.7-Gb/s Adaptive Transmitter With Two-Tap Preemphasis Using a Propagation-Time Detector

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2 Author(s)
Shih-Yuan Kao ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Shen-Iuan Liu

A 1.62/2.7-Gb/s adaptive transmitter with two-tap preemphasis is presented. The tap coefficients are adjusted by detecting the propagation time through the channel with different lengths. This adaptive transmitter is fabricated in 0.13-??m CMOS technology, and the core area occupies 0.25 ?? 0.15 mm2. The maximum power consumption from a 1.2-V supply is 32.4 mW at 2.7 Gb/s. For a 40-in FR4 PCB trace with a 12.3-dB loss, the measured RMS and peak-to-peak jitters of the recovered data are 30 and 231 ps, respectively, for a 1.62-Gb/s pseudorandom binary sequence (PRBS) of 231 - 1. For a 20-in FR4 PCB trace with a 10.6-dB loss, the RMS and peak-to-peak jitters are 21 and 144 ps, respectively, for a 2.7-Gb/s PRBS of 231 - 1. For both cases, the measured bit error rates are less than 10-12.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:57 ,  Issue: 3 )