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Pat. 9871527 United States, Int. Cl.22 H03L 7/093, H02M 3/07, H03F 3/45, H03L 7/099. Phase locked loop with sense amplifier circuitry : Appl. N 15/419587 : Filed 30.01.2017 : Pub. 16.01.2018 : / David M. Friend, Grant P. Kesselring, Michael A. Sperling, James D. Strom ; Assignee International Business Machines Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9871527/en?oq=US9871527.html (дата обращения: ДД.ММ.ГГГГ).