Title :
A low distortion linear-tunable continuous-time 488 kHz fifth-order Bessel filter
Author :
Egerer, Jens ; Desel, Thomas ; Popken, Popken ; Boxho, Jean ; Macq, Damien ; Cornil, Jean-Philippe
Author_Institution :
Fraunhofer Inst. fur Integrierte Schaltungen, Erlangen, Germany
Abstract :
For an HDSL analog front end, a low distortion 5th order R-MOSFET-C Bessel filter was designed in a 0.5 μm, 3.3 V CMOS technology. The filter is linearly tunable around cutoff frequencies of 488 kHz and 335 kHz by an on-chip tuning circuit. The fabricated prototypes show linear tuning and a THD<-75 dB for a 100 kHz signal
Keywords :
Bessel functions; CMOS analogue integrated circuits; circuit tuning; continuous time filters; digital subscriber lines; harmonic distortion; 0.5 micron; 100 kHz; 3.3 V; 335 kHz; 488 kHz; CMOS technology; HDSL analog front end; R-MOSFET-C Bessel filter; THD; cutoff frequencies; fifth-order Bessel filter; linear-tunable continuous-time filter; on-chip tuning circuit; Active filters; CMOS technology; Circuit optimization; Cutoff frequency; Microelectronics; Nonlinear filters; Resistors; Telecommunications; Tunable circuits and devices; Voltage;
Conference_Titel :
ASIC Conference 1998. Proceedings. Eleventh Annual IEEE International
Conference_Location :
Rochester, NY
Print_ISBN :
0-7803-4980-6
DOI :
10.1109/ASIC.1998.722801