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Phase-frequency detecting time-to-digital converter

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3 Author(s)
Oh, D.-H. ; Sch. of Electr. Eng., Seoul Nat. Univ., Seoul ; Choo, K.-J. ; Jeong, D.-K.

A simple time-to-digital converter (TDC), capable of detecting not only phase difference but also frequency difference, is presented. The proposed TDC guarantees pull-in even for PLLs with the lowest loop gain. The TDC is fabricated in a 65 nm CMOS process and dissipates 0.37 mW from a 1.2 V supply at 25 MHz clock frequency.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 4 )