Title :
A Fractional-N PLL for SONET-Quality Clock-Syntlhesis Applicationis
Author :
Thomsen, A. ; Zhang, L. ; Frey, D. ; Yu, Q. ; Sun, L. ; Garlapati, A. ; Hulfachor, R. ; Pastorello, D. ; Juhn, R.
Author_Institution :
Silicon Labs., Austin, TX
Abstract :
A frequency-synthesis IC, targeted toward replacing high frequency XOs and VCXOs, is proposed. It is based on a fixed-frequency XO and a fractional-N PLL. A linearized phase detector, phase-error cancellation, and an integrated shielded LC-VCO are used. The measured jitter is 0.3psrms in the OC-192 band. The chip draws 70mA excluding the output driver.
Keywords :
SONET; integrated circuits; jitter; phase detectors; phase locked loops; voltage-controlled oscillators; 70 mA; SONET; clock synthesis; frequency synthesis integrated circuits; phase detector; phase locked loops; phase-error cancellation; voltage controlled oscillator; Capacitance; Clocks; Frequency conversion; Frequency synthesizers; Laboratories; Optical resonators; Phase locked loops; Surface acoustic waves; Transfer functions; Voltage-controlled oscillators;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373586
