Title :
CMOS auto-ranging PLL for low-voltage wideband systems
Author :
Chang, Yi-Cheng ; Greeneich, Edwin W.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
Describes a low-voltage PLL circuit using auto-ranging technique designed for implementation in the MOSIS 1.5 μm CMOS technology. The PLL circuit is equipped with a self-sensed/adjusted capacity in response to a large, fast acquired-frequency switch, and also has good immunity to temperature, processing, and supply voltage variations. The experimental result confirms the functionality of the auto-ranging mechanism of the fabricated PLL IC over a frequency range of 55-400 MHz with a 2.5-volt power supply.
Keywords :
CMOS integrated circuits; low-power electronics; phase detectors; phase locked loops; voltage-controlled oscillators; 1.5 micron; 2.5 V; 55 to 400 MHz; CMOS; VCO; acquired-frequency switch; auto-ranging PLL; low-voltage wideband systems; processing variations; self-sensed/adjusted capacity; supply voltage variations; temperature variations; Circuit optimization; Control systems; Equations; Filters; Frequency locked loops; Oscillators; Phase locked loops; Process control; Tuning; Wideband;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010573
