A current-controlled oscillator coarse-steering acquisition-aid for high frequency SOI CMOS PLL circuits

Author

Chang, Yi-Cheng ; Greeneich, Edwin W.

Author_Institution

Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA

Volume

2

fYear

1999

fDate

36342

Firstpage

561

Abstract

A self-adjusting frequency control circuit for a high-speed phase-locked loop (PLL) system is designed for implementation in a 0.25 μm SOI CMOS technology. This coarse-steering circuit uses a current sensor to indirectly detect the running frequency of the VCO/ICO and combine the result generated from a simple frequency comparator to determine an active frequency control range for the PLL. The entire circuit has been simulated with a wide frequency range of 850 MHz and a power supply voltage of 1.8 volts on HSPICE

Keywords

CMOS integrated circuits; UHF integrated circuits; automatic frequency control; mixed analogue-digital integrated circuits; phase locked loops; silicon-on-insulator; 0.25 micron; 1.8 V; 850 MHz; HSPICE simulation; SOI CMOS PLL circuits; SOI CMOS technology; VCO/ICO; active frequency control range; coarse-steering acquisition-aid; current sensor; current-controlled oscillator; frequency comparator; high frequency PLL circuits; high-speed PLL system; phase-locked loop; running frequency detection; self-adjusting frequency control circuit; Circuits; Flip-flops; Frequency control; Frequency conversion; Phase frequency detector; Phase locked loops; Registers; Signal generators; Voltage; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.780814

Filename

780814