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A 0.1-to-1.5GHz 4.2mW All-Digital DLL with Dual Duty-Cycle Correction Circuit and Update Gear Circuit for DRAM in 66nm CMOS Technology

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22 Author(s)

We design a DLL that has a slew-rate controlled duty-cycle-correction (DCC) with a fully digital controlled duty-cycle-error detector and has the update gear circuit to shift update mode for low power consumption. The DLL is composed of a dual loop and two types of digital DCC, at the input and output, which have a higher DCC capability when combined. We also design a clock receiver that generates a robust clock from a poor clock source.

Published in:

Solid-State Circuits Conference, 2008. ISSCC 2008. Digest of Technical Papers. IEEE International

Date of Conference:

3-7 Feb. 2008