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A 0.18 µm CMOS 3.125-Gb/s Digitally Controlled Adaptive Line Equalizer with Feed-Forward Swing Control for Backplane Serial Link
Ki-Hyuk LEE Jae-Wook LEE Woo-Young CHOI
IEICE TRANSACTIONS on Electronics
Publication Date: 2006/10/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Electronic Circuits
adaptive equalizer, backplane transceiver,
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A new compact line equalizer is proposed for backplane serial link applications. The equalizer has two control blocks. The feed-forward swing control block determines the optimal low frequency level and the feedback control block detects signal shapes and decides the high-frequency boosting level of the equalizer. Successful equalization is demonstrated over a 1.5 m long PCB trace at 3.125-Gb/s by the circuit realized with 0.18 µm CMOS process. The circuit occupies only 0.16 mm2 and consumes 20 mW with 1.8 V supply.