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Low-Pass IIR Filter :: Overview

Details

Name: lp_iir_filter
Created: Feb 1, 2010
Updated: Feb 2, 2010
SVN Updated: Feb 2, 2010
SVN: Browse
Latest version: download (might take a bit to start...)
Statistics: View
Bugs: reported / solved

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Other project properties

Category: DSP core
Language: VHDL
Development status: Stable
Additional info: none
WishBone compliant: No
WishBone version: n/a
License: LGPL

Description

Low-Pass IIR Filter IP core is a unit to perform the Infinite Impulse Responce (IIR) low pass filter which pass frequency is tuned dynamically

Main Features:

  • Dynamically tuned passband cutoff frequency in the range of 0.1 to 0.4 of the sampling frequency. The frequency is set by the 12-bit code with the linear scale.
  • using 8-staged wave digital filter scheme of the 33-d order provides both sharp frequency responce – up to 100 db/ octave - and high stopband ripple – up to 80 db. Besides the passband ripple not succedes -2,5%, or –0,23db in the whole frequency range.
  • IIR wave digital filters provide both possibility to tune the cutoff frequency and excellent stability.
  • Fully pipelined structure provide both high clock frequency – up to 120 MHz, high sampling frequency – up to 15 MHz – and low hardware volume – 960 CLB slices and 3 DSP48 units in Xilinx Virtex2P FPGA device.

Please, contact us if you wish to have this IP core modified or adjusted to meet your requirements.

This core is provided by Unicore Systems http://unicore.co.ua. To view our product list of commercial IP cores, please, follow this link

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