Title :
A CMOS companding-based third order Chebyshev filter
Author :
Wang, Lige ; El-Gamal, Mourad N.
Author_Institution :
Microelectron. & Comput. Syst. Lab., McGill Univ., Montreal, Que., Canada
Abstract :
The method of designing CMOS pseudo log-domain filters using direct mapping from a linear signal flow graph is demonstrated. A third-order Chebyshev filter prototype is designed and fabricated in a standard 0.35 μm CMOS technology. The filter reaches a maximum operating frequency of 12 MHz - the highest to be reported to date for a CMOS companding-based filter. A dynamic range of 43 dB is achieved, which compares well to similar log-domain filters implemented in bipolar technologies.
Keywords :
CMOS analogue integrated circuits; Chebyshev filters; compandors; continuous time filters; signal flow graphs; 0.35 micron; 12 MHz; CMOS; companding-based third order Chebyshev filter; continuous time active filters; direct mapping; dynamic range; linear signal flow graph; operating frequency; pseudo log-domain filters; CMOS technology; Chebyshev approximation; Design methodology; Dynamic range; Flow graphs; Frequency; Nonlinear filters; Prototypes; Signal design; Signal mapping;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010504
