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ISCAS
2008
IEEE

A 5.2mW all-digital fast-lock self-calibrated multiphase delay-locked loop

14 years 6 months ago
A 5.2mW all-digital fast-lock self-calibrated multiphase delay-locked loop
—A 333MHz-1GHz all-digital multiphase delay-locked loop with precise multi-phase output has been designed with TSMC 130nm CMOS technology model. A modified binary search algorithm is proposed to match up a linear approximate delay element (LADE). The LADE property of linearity and insensitive to PVT variations is good for digitally-controlled delay element. The lock-in time could be reduced down to 14 reference clock cycles, and enhance the operation range based on LADE/binary search algorithm co-operate effort. The timing error caused by process mismatch is further reduced by proposed rapid self-calibration (RSC) algorithm. A calibration unit is designed based on RSC algorithm, which reduces the maximum timing error to less than 9ps when DLL is operating at 500MHz. The entire calibration unit could be turned off after calibration procedure is complete to reduce power consumption. The total power dissipation of the all-digital self-calibrated
Li-Pu Chuang, Ming-Hung Chang, Po-Tsang Huang, Chi
Added 31 May 2010
Updated 31 May 2010
Type Conference
Year 2008
Where ISCAS
Authors Li-Pu Chuang, Ming-Hung Chang, Po-Tsang Huang, Chih-Hao Kan, Wei Hwang
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