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LF43891 Datasheet 9 X 9-bit Digital Filter

Manufacturer: LOGIC Devices Incorporated

Overview: LF43891 DEVICES INCORPORATED 9 x 9-bit Digital Filter LF43891 DEVICES INCORPORATED 9 x 9-bit Digital.

General Description

The LF43891 is a video-speed digital filter that contains eight filter cells (taps) cascaded internally and a shiftand-add output stage.

A 9 x 9 multiplier, three decimation registers, and a 26-bit accumulator are contained in each filter cell.

The output stage of the LF43891 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 30 MHz Maximum Sampling Rate 320 MHz Multiply-Accumulate Rate 8 Filter Cells 8-bit Unsigned or 9-bit Two’s Complement Data/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 HSP43891 u 84-pin PLCC, J-Lead LF43891 BLOCK.

LF43891 Distributor