Title :
Design of a 15-MHz CMOS continuous-time filter with on-chip tuning
Author_Institution :
AT&T Bell Labs., Murray Hill, NJ, USA
fDate :
12/1/1991 12:00:00 AM
Abstract :
A fifth-order CMOS continuous-time Bessel filter with a tunable 6- to 15-MHz cutoff frequency is described. This fully balanced transconductance-capacitor (Gm-C) leapfrog filter achieves a dynamic range of 55 dB while dissipating 96 mW in a 5-V 0.9-μm CMOS process. The author reviews the disk drive application and filtering requirements, and explains why the G m-C continuous-time filtering approach was used. The on-chip master-slave tuning system uses a voltage-controlled oscillator (VCO). Experimental results are presented
Keywords :
CMOS integrated circuits; active filters; hard discs; linear integrated circuits; tuning; 0.9 micron; 5 V; 6 to 15 MHz; 96 mW; Bessel filter; CMOS; balanced transconductance capacitor filter; continuous-time filter; disk drive application; dynamic range; fifth order filter; filtering requirements; hard disk drive read channels; leapfrog filter; on-chip master-slave tuning system; on-chip tuning; tunable cut off frequency; voltage controlled filters; voltage-controlled oscillator; CMOS process; Cutoff frequency; Disk drives; Dynamic range; Filtering; Filters; Master-slave; System-on-a-chip; Tuning; Voltage-controlled oscillators;
Journal_Title :
Solid-State Circuits, IEEE Journal of
