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LF43891 - 9 x 9-bit Digital Filter

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.

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.

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Datasheet Details

Part number LF43891
Manufacturer LOGIC Devices Incorporated
File Size 79.75 KB
Description 9 x 9-bit Digital Filter
Datasheet download datasheet LF43891 Datasheet

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Other Datasheets by LOGIC Devices Incorporated

Part Number Description
LF43881 8 x 8-bit Digital Filter
LF43168 Dual 8-Tap FIR Filter
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LF43891 DEVICES INCORPORATED 9 x 9-bit Digital Filter LF43891 DEVICES INCORPORATED 9 x 9-bit Digital Filter 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. 8-bit unsigned or 9-bit two’s complement format for data and coefficients can be independently selected. Expanded coefficients and word sizes can be processed by cascading multiple LF43891s to implement larger filter lengths without affecting the sample rate.
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