A digitally controlled PLL for digital SOCs
Publikation/Tidskrift/Serie: Proceedings - IEEE International Symposium on Circuits and Systems
Förlag: Institute of Electrical and Electronics Engineers Inc.
A fully integrated digitally controlled PLL used as a clock multiplying circuit is designed and fabricated. The PLL has no off-chip components and it is made from standard cells found in most digital standard cell libraries. It is therefore portable between processes as an IP-block. Using a 0.35 μm standard CMOS process and a 3.0 V supply, the PLL has a frequency range of 152 MHz to 366 MHz and occupies an on-chip area of about 0.07 mm2. In addition, the next version of this all-digital PLL is described in synthesizable VHDL-code, which simplifies digital system simulation and change of process. A new time-to-digital converter with simulated resolution of 250 ps is made for the next PLL.
- Electrical Engineering, Electronic Engineering, Information Engineering
- Digital systems
Proceedings of the 2003 IEEE International Symposium on Circuits and Systems
- ISSN: 0271-4310
- CODEN: PICSDI