IEEE Journal of Solid-State Circuits · 1991 · 46 citations · 6 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsVlsi DesignActive FiltersAnalog FiltersCmos Circuit DesignComplementary Metal-oxide-semiconductor TechnologyMixed-signal Integrated Circuit DesignRadio-frequency Integrated CircuitsBicmos TechnologyFiltersHarmonic DistortionPower ConsumptionSignal-to-noise RatioSwitched-capacitor FiltersTotal Harmonic DistortionVoltage Harmonic Distortion
The authors describe two low-voltage switched-capacitor (SC) filters: one can operate from a minimum supply of 1.5 V and the other from a minimum supply of 2 V (for typical parameter values). Both filters use a fully differential architecture and are fabricated in a standard BiCMOS technology. The lowest supply filter, operated from a 2-V supply, has an SNR (signal-to-noise ratio) of 92 dB and a THD (total harmonic distortion) of -70 dB for a 2.4-V/sub pp/ differential signal. Power consumption and area per pole are 60 mu W and 0.18 mm/sup 2/, respectively, with a clock frequency of 447 kHz. The realized filters can be used as building blocks to implement more complex functions, like the active synthesis of a given impedance in line-fed telecom systems.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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