Title :
Phase-frequency detecting time-to-digital converter
Author :
Oh, D.-H. ; Choo, K.-J. ; Jeong, Deog-Kyoon
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., Seoul
Abstract :
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.
Keywords :
CMOS integrated circuits; convertors; phase locked loops; CMOS process; all-digital phase-locked loops; charge-pump phase-locked loops; frequency 25 MHz; frequency difference; power 0.37 mW; time-to-digital converter; voltage 1.2 V;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20093410
