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Details, datasheet, quote on part number:HSP43481/883
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Datasheet text preview:
TM
August 1999
NO
IG DES NEW R D FO NDE P43881 E O M M ee H S S REC T
HSP43481/883
NS
Digital Filter
Features
· This Circuit is Processed in A ccordance to M IL-STD883 and is Fully Conformant Under the Provisions of Paragraph 1.2.1. · 0MHz to 25.6MHz Sample Rate · Four Filter Cells · 8-Bit Coefficients and Signal Data · Low Pow er CM OS Operation - ICCSB = 500µA Maximum - ICCOP = 110µA Maximum at 20MH z · 26-Bit Accumulator Per Stage · Filter Lengths Up To 1032 Taps · Expandable Coefficient Size, Data Size and Filter Length · Decimation by 2, 3 or 4
Description
The HSP43481/883 is a video-speed Digital Filter (DF) designed to efficiently implement vector operations such as FIR digital filters. It is comprised of four filter cells cascaded internally and a shift-and- add output stage, all in a single integrated circuit. Each filter cell contains an 8 x 8 multiplier, three decimation registers and a 26-bit accumulator which can add the contents of any filter cell accumulator to the output stage accum ulator shifted right by eight-bits. The HSP43481/883 has a maximum sample rate of 25.6M Hz. The effective multiply-accum ulate (MAC) rate is 102MHz. The HSP43481/883 can be configured to process expanded coefficient and word sizes. Multiple devices can be cascaded for larger filter lengths without degrading the sample rate or a single device can process larger filter lengths at less than 25.6MH z 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, m aking even larger filter lengths possible. The HSP43481/883 provides for unsigned or two's complement arithm etic, 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 N x N spatial correlations/convolutions for image processing applications.
PACKAGE 68 Lead P GA 68 Lead P GA
Applications
· 1-D and 2-D FIR Filters · Radar/Sonar · Adaptive Filters · Echo Cancellation · Complex Multiply-Add · Sample Rate Converters
Ordering Information
PART NUMBER HSP43481GM-20/883 HSP43481GM-25/883 TEMPERATURE RANGE -55 C to +125 C -55oC to +125oC
o o
Block Diagram
VCC DIENB CIENB DCM0 - DCM1 ERASE T CCI CIN0 - C IN7 RESET CLK ADR0 - 1 8 4 VSS DIN0 - D IN7 T CS 8 5 8 FILTER CE L L 0 4 2 M UX RESET CL K SHADD SENB L SENBH 2 ADR0 , ADR1 2 26 OUTPUT STAGE 26 26 8 8 FILTER CELL 1 26 8 8 FILTER CELL 2 26 8 8 FILTER CELL 3 26 T CCO 8 COUT0 - COUT 7 COENB
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File Number
2450.4
DB302
HSP43481/883
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