IEEE Transactions on Circuits & Systems II Express Briefs · 2015 · 13 citations · 8 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsLow-power DesignMicroelectronicsCmos Circuit DesignDigital Integrated Circuit DesignDigital Integrated CircuitsDigital Signal ProcessingIntegrated Circuit DesignMixed-signal Integrated Circuit DesignCascaded Filter DesignEqualizationFilter DesignInfinite Impulse Response FiltersIntegrated FiltersMultiply-accumulate UnitsVery-large-scale IntegrationVery-large-scale Integration (Vlsi) Design
This brief proposes an efficient very-large-scale integration architecture for folded configurable infinite-impulse response (IIR) filter design, which is used in modern real-time digital signal processing applications such as loudspeaker equalization. The proposed configurable sixth-order IIR filter is designed with three cascaded second-order IIR filters, and the same is used to perform one sixth-order or three second-order or one fourth-order and one second-order IIR filter operations in parallel, where floating-point multiply-accumulate circuit (MAC) is used to design each second-order IIR filter. The proposed sixth-order IIR filter achieves a 58.4% reduction in energy per operation compared with conventional MAC-based architecture using 45-nm technology.
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