Switched-capacitor filters for FPGA implementation: tools and designs

Traditionally, the accuracy requirements demanded by high quality integrated filters could only be satisfied by full-custom fabrication. Recent developments in analogue FPGA facilities present opportunities to a wider community of designers for commercial realisation of integrated circuit filters suited to a reasonable range of applications. Software to support filter design within the overall facility enables easy access to standard filtering functions. It is hoped to provide advanced features for more sophisticated design as the facility develops