General Description
Fully configurable Nyquist decimation filter (down-sampler) with decimation factors from 2 to 2^N. The FIR filter is highly optimized for both speed and area and is ideal for a wide range of multi-rate DSP applications.
Key Design Features
– Decimation factors from 2 to 2^N
– Configurable coefficients
– Configurable data width
– Symmetric arithmetic rounding
– Output saturation – no wrap
– 80 dB stop-band attenuation or better
– Only 12 H/W multipliers per stage
– FPGA sample rates in excess of 300 MHz
– Matlab®, FDAtool and Simulink® compatible
Applications
– Decimation after digital down-conversion
– Decimation by a wide range of factors
– Reduction of input sample rate to make subsequent signal processing easier
