Digital Filter

The HSP43881/883 is a video speed Digital Filter (DF) designed to efficiently implement vector operations such as FIR digital filters. It is comprised of eight filter cells cascaded internally and a shift and add output stage, all in a single integrated circuit. Each filter cell contains a 8 x 8-bit multiplier, three decimation registers and a 26-bit accumulator. The output stage contains an additional 26-bit accumulator which can add the contents of any filter cell accumulator to the output stage accumulator shifted right by 8-bits. The HSP43881/883 has a maximum sample rate of 25.6MHz. The effective multiply accumulate (mac) rate is 204MHz.

特性 Features

? This Circuit is Processed in Accordance to MIL-STD-883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1.

? 0MHz to 25.6MHz Sample Rate

? Eight Filter Cells

? 8-Bit Coefficients and Signal Data

? Low Power CMOS Operation

? ICCSB 500μA Maximum

? ICCOP 160mA Maximum at 20MHz

? 26-Bit Accumulator Per Stage

? Filter Lengths Up to 1032 Taps

? Expandable Coefficient Size, Data Size and Filter Length

? Decimation by 2, 3 or 4

Applications

? 1-D and 2-D FIR Filters

? Radar/Sonar

? Adaptive Filters

? Echo Cancellation

? Complex Multiply-Add

? Sample Rate Converters