Dual-loop 2-step ZQ calibration for dedicated power supply voltage in LPDDR4 SDRAM

Chang-Kyo Lee, Junha Lee, Kiho Kim, Jin-Seok Heo, Gil-Hoon Cha, Jin-Hyeok Baek, Daesik Moon, Yoon-Joo Eom, Tae Sung Kim, Hyunyoon Cho, Young Hoon Son, Seonghwan Kim, Jong-Wook Park, Sewon Eom, Si-Hyeong Cho, Young-Ryeol Choi, SeungSeob Lee, Kyoung-Soo Ha, Youngseok Kim, Bo-Tak Lim, Dae-Hee Jung, Eungsung Seo, Kyoung-Ho Kim, Yoon-Gyu Song, Youn-Sik Park, Tae-young Oh, Seung-Jun Bae, Indal Song, Seok-Hun Hyun, Joon Young Park, Hyuck-Joon Kwon, Young-Soo Sohn, Jung Hwan Choi, Kwang-Il Park, Seong-Jin Jang. Dual-loop 2-step ZQ calibration for dedicated power supply voltage in LPDDR4 SDRAM. In IEEE Asian Solid-State Circuits Conference, A-SSCC 2017, Seoul, Korea (South), November 6-8, 2017. pages 153-156, IEEE, 2017. [doi]

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