Process Variation Tolerant All-Digital 90° Phase Shift DLL for DDR3 Interface

Heechai Kang, Kyungho Ryu, Dong-Hoon Jung, Donghwan Lee, Won Lee, SuHo Kim, JongRyun Choi, Seong-Ook Jung. Process Variation Tolerant All-Digital 90° Phase Shift DLL for DDR3 Interface. IEEE Trans. on Circuits and Systems, 59-I(10):2186-2196, 2012. [doi]

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