Datasheet > LF43881

LF43881

更新时间： 2024-11-22 22:47:11

品牌	Logo	应用领域
逻辑 - LOGIC		/
页数	文件大小	规格书
11页	84K
描述
8 x 8-bit Digital Filter

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LF43881 数据手册

LF43881

DEVICES INCORPORATED

8 x 8-bit Digital Filter

LF43881

8 x 8-bit Digital Filter

DEVICES INCORPORATED

FEATURES

DESCRIPTION

The LF43881 is a video-speed digital

filter that contains eight filter cells

(taps) cascaded internally and a shift-

and-add output stage. An 8 x 8

rate, a single LF43881 can process

larger filter lengths by using multiple

passes. The sampling rate can range

from 0 to 40 MHz. Over 1000 taps

❑ 25 MHz Maximum Sampling Rate

❑ 320 MHz Multiply-Accumulate Rate

❑ 8 Filter Cells

❑ 8-bit Unsigned or Two’s Complement

multiplier, three decimation registers, may be processed without overflows

Data

and a 26-bit accumulator are con-

tained 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. 8-bit unsigned or two’s

complement format for data and

coefficients can be independently

selected.

due to the architecture of the device.

❑ 8-bit Unsigned or Two’s Complement

The output sample rate can be re-

duced to one-half, one-third, or one-

fourth the input sample rate by using

the three decimation registers con-

tained in every filter cell. Matrix

multiplication, N x N spatial correla-

tions/ convolutions, and other 2-D

operations for image processing can

also be achieved using these registers.

Coefficients

❑ 26-bit Data Outputs

❑ Shift-and-Add Output Stage for

Combining Filter Outputs

❑ Expandable Data Size, Coefficient

Size, and Filter Length

❑ User-Selectable 2:1, 3:1, or 4:1

Decimation

❑ Replaces Harris HSP43881

❑ 84-pin PLCC, J-Lead

Expanded coefficients and word sizes

can be processed by cascading mul-

tiple LF43881s to implement larger

filter lengths without affecting the

sample rate. By reducing the sample

LF43881 BLOCK DIAGRAM

DIENB, CIENB,

DIN7-0

TCS

ERASE, DCM1-0

TCCI

TCCO

FILTER

CELL 0

FILTER

CELL 1

FILTER

CELL 2

FILTER

CELL 3

FILTER

CELL 4

FILTER

CELL 5

FILTER

CELL 6

FILTER

CELL 7

CIN7-0

COUT7-0

ADR2-0

COENB

MUX

SHADD

OUTPUT

STAGE

SENBL

SENBH

RESET

CLK

TO ALL CELLS

TO ALL REGISTERS

SUM25-0

Video Imaging Products

08/16/2000–LDS.43881-J

12 3 4 5 6 7...11

中文翻译

下载PDF

与LF43881相关器件

型号	品牌	获取价格	描述	数据表
LF43881GC25	ETC	获取价格	Digital Filter
LF43881GC33	ETC	获取价格	Digital Filter
LF43881GC40	ETC	获取价格	Digital Filter
LF43881GC50	ETC	获取价格	Digital Filter
LF43881GM33	LOGIC	获取价格	Digital Filter, 8-Bit, CMOS, CPGA84, CERAMIC, PGA-84
LF43881GM40	LOGIC	获取价格	Digital Filter, 8-Bit, CMOS, CPGA84, CERAMIC, PGA-84
LF43881GM50	LOGIC	获取价格	Digital Filter, 8-Bit, CMOS, CPGA84, CERAMIC, PGA-84
LF43881GMB33	ETC	获取价格	Digital Filter
LF43881GMB40	ETC	获取价格	Digital Filter
LF43881GMB50	ETC	获取价格	Digital Filter