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LF43881 Datasheet 8 X 8-bit Digital Filter

Manufacturer: LOGIC Devices Incorporated

Overview: LF43881 DEVICES INCORPORATED 8 x 8-bit Digital Filter LF43881 DEVICES INCORPORATED 8 x 8-bit Digital.

General Description

The LF43881 is a video-speed digital filter that contains eight filter cells (taps) cascaded internally and a shiftand-add output stage.

An 8 x 8 multiplier, three decimation registers, and a 26-bit accumulator are contained in each filter cell.

The output stage of the LF43881 contains a 26-bit accumulator which can add the contents of any filter stage to the output stage accumulator shifted right by 8 bits.

Key Features

  • u u u u 25 MHz Maximum Sampling Rate 320 MHz Multiply-Accumulate Rate 8 Filter Cells 8-bit Unsigned or Two’s Complement Data u 8-bit Unsigned or Two’s Complement Coefficients u 26-bit Data Outputs u Shift-and-Add Output Stage for Combining Filter Outputs u Expandable Data Size, Coefficient Size, and Filter Length u User-Selectable 2:1, 3:1, or 4:1 Decimation u Replaces Harris HSP43881 u 84-pin PLCC, J-Lead LF43881 BLOCK.

LF43881 Distributor