Title :
Comparison of magnitude and delay sensitivity in IFLF and cascade g m-C filters
Author :
Chiang, David H. ; Schaumann, Rolf
Author_Institution :
Texas Instrum. Storage Products Group, Silicon Syst. Inc., Tustin, CA, USA
Abstract :
The magnitude and delay performance of integrated continuous-time inverse-follow-the-leader feedback (IFLF) and cascade lowpass filters are compared. The analysis is based on tenth-order filters with equiripple group delay, implemented in CMOS fully-differential form. Experimental and simulation results show that magnitude sensitivity in the passband of the cascade filter is larger than that of the IFLF filter. This result is as expected. The stopband and group delay performances, on the other hand, are worse in the IFLF filter than in the cascade filter
Keywords :
CMOS analogue integrated circuits; cascade networks; circuit feedback; continuous time filters; delay estimation; linear network analysis; linear network synthesis; low-pass filters; sensitivity analysis; 2 micron; CMOS fully-differential form; active filters; cascade filters; cascade lowpass filters; delay sensitivity; design methodology; equiripple group delay; gm-C filters; group delay peformance; integrated continuous-time filters; inverse-follow-the-leader feedback; magnitude sensitivity; stopband peformance; tenth-order filters; Band pass filters; Capacitors; Delay; Feedback; Filtering theory; Instruments; Integrated circuit synthesis; Silicon; Topology; Transfer functions;
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
DOI :
10.1109/ISCAS.1999.780849
