Title :
Extended division range 2/3 chain frequency divider with dynamic control word
Author :
Ashour, Haytham ; Dessouky, Mohamed ; Sharaf, Khaled
Author_Institution :
Mentor Graphics, Cairo, Egypt
fDate :
May 30 2010-June 2 2010
Abstract :
This paper presents a 4-31 programmable frequency divider with dynamic control word built in 90 nm CMOS. The divider uses a chain of 2/3 dual modulus pre-scalar cells. This paper presents a modification to the conventional 2/3 dual modulus pre-scalar building cell. This modification allows changing the control word dynamically during the operation. The divider consists of a chain of four 2/3 dual modulus cells. The maximum operating frequency is 7.9 GHz consuming 24.5 mA at a low voltage supply of 1V.
Keywords :
frequency dividers; microwave frequency convertors; programmable circuits; 2/3 chain frequency divider; 2/3 dual modulus cells; CMOS process; dynamic control word; frequency 7.9 GHz; maximum operating frequency; programmable frequency divider; Buildings; Clocks; Frequency conversion; Graphics; Logic; Low voltage; Signal generators;
Conference_Titel :
Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on
Conference_Location :
Paris
Print_ISBN :
978-1-4244-5308-5
Electronic_ISBN :
978-1-4244-5309-2
DOI :
10.1109/ISCAS.2010.5537604
