參數(shù)資料
型號(hào)： HSP43881
廠商： Intersil Corporation
英文描述： Digital Filter
中文描述： 數(shù)字濾波
文件頁(yè)數(shù)： 1/21頁(yè)
文件大?。?/td> 148K
代理商： HSP43881
1
File Number
2758.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright Intersil Corporation 1999
HSP43881
Digital Filter
The HSP43881 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 has
a maximum sample rate of 30MHz. The effective multiply
accumulate (mac) rate is 240MHz.
The HSP43881 DF can be configured to process expanded
coefficient and word sizes. Multiple DFs can be cascaded for
larger filter lengths without degrading the sample rate or a
single DF can process larger filter lengths at less than
30MHz with multiple passes. The architecture permits
processing filter lengths of over 1000 taps with the
guarantee of no overflows. In practice, most filter coefficients
are less than 1.0, making even larger filter lengths possible.
The DF provides for 8-bit unsigned or two’s complement
arithmetic, independently selectable for coefficients and
signal data.
Each DF filter cell contains three resampling or decimation
registers which permit output sample rate reduction at rates
of
1
/
2
,
1
/
3
or
1
/
4
the input sample rate. These registers also
provide the capability to perform 2-D operations such as
matrix multiplication and N x N spatial
correlations/convolutions for image processing applications.
Features
Eight Filter Cells
0MHz to 30MHz Sample Rate
8-Bit Coefficients and Signal Data
26-Bit Accumulator Per Stage
Filter Lengths Over 1000 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
Block Diagram
Ordering Information
PART
NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
PKG. NO.
HSP43881JC-20
0 to 70
84 Ld PLCC
N84.1.15
HSP43881JC-25
0 to 70
84 Ld PLCC
N84.1.15
HSP43881JC-30
0 to 70
84 Ld PLCC
N84.1.15
HSP43881GC-20
0 to 70
85 Ld PGA
G85.A
HSP43881GC-25
0 to 70
85 Ld PGA
G85.A
HSP43881GC-30
0 to 70
85 Ld PGA
G85.A
TCCI
CIN0 - 7
DF
FILTER
CELL 7
ERASE
DCMO - 1
DIENB
CIENB
COENB
MUX
CLK
ADR0 - 2
RESET
26
ADR0, ADR1, ADR2
2
CLK
RESET
SHADD
SENBL
SENBH
OUTPUT
STAGE
8
V
CC
V
SS
DIN0 - DIN7 TCS
3
DF
FILTER
CELL 6
26
8
8
DF
FILTER
CELL 5
26
8
8
DF
FILTER
CELL 4
26
8
8
DF
FILTER
CELL 3
26
8
8
DF
FILTER
CELL 2
26
8
8
DF
FILTER
CELL 1
26
8
8
DF
FILTER
CELL 0
26
8
8
8
5
5
2
26
8
5
TCCO
COUT0 - 7
SUM0 - 25
8
26
Data Sheet
May 1999
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