IEEE Journal of Solid-State Circuits · 1991 · 151 citations · 18 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSystem-on-chip DesignAnalog FiltersCmos Circuit DesignMixed-signal Integrated Circuit DesignMixed-signal IntegrationRadio-frequency Integrated CircuitsCmos Analog Integrated CircuitsCmos OscillatorsContinuous-time Filter DesignCutoff FrequencyDynamic RangeFilter TuningFilteringVoltage-controlled Oscillators
A fifth-order CMOS continuous-time Bessel filter with a tunable 6- to 15-MHz cutoff frequency is described. This fully balanced transconductance-capacitor (G/sub m/-C) leapfrog filter achieves a dynamic range of 55 dB while dissipating 96 mW in a 5-V 0.9- mu m CMOS process. The author reviews the disk drive application and filtering requirements, and explains why the G/sub 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.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
18