Frequency detector for fast frequency lock of digital PLLs

V. Kratyuk, P. K. Hanumolu, U. K. Moon, K. Mayaram

Research output: Contribution to journalArticlepeer-review


A new frequency detector, which allows for a fast frequency lock of phase-locked loops (PLLs), is presented. It uses the feedback divider that already exists in a PLL to determine the frequency difference. The proposed frequency detector provides frequency difference information at each reference cycle, and thus guarantees fast frequency acquisition.

Original languageEnglish (US)
Pages (from-to)13-15
Number of pages3
JournalElectronics Letters
Issue number1
StatePublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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