Integrated Circuit Chip HSP43124SC-45Z - Intersil Corporation - Serial I/O Filter



Detailed Product Description

Quick Detail:


Serial I/O Filter





The Serial I/O Filter is a high performance filter engine that is  ideal for off loading the burden of filter processing from a DSP  microprocessor. It supports a variety of multistage filter  configurations based on a user programmable filter and fixed  coefficient halfband filters. These configurations include a  programmable FIR filter of up to 256 taps, a cascade of from  one to five halfband filters, or a cascade of halfband filters followed by a programmable FIR. The half band filters each decimate by a factor of two, and the FIR filter decimates from one to eight. When all six filters are selected, a maximum decimation of 256 is provided.

For digital tuning applications, a separate multiplier is provided

which allows the incoming data stream to be multiplied, or mixed, by a user supplied mix factor. A two pin interface is provided for serially loading the mix factor from an external source or selecting the mix factor from an on-board ROM. The on-board ROM contains samples of a sinusoid capable of spectrally shifting the input data by one quarter of the sample rate, FS/4. This allows the chip to function as a digital down converter when the filter stages are configured as a low-pass filter.

The serial interface for 3- input and output data is compatible with the serial ports of common DSP microprocessors.

Coefficients and configuration data are loaded over a bidirectional eight bit interface.





• 45MHz Clock Rate

• 256 Tap Programmable FIR Filter

• 24-Bit Data, 32-Bit Coefficients

• Cascade of up to 5 Half Band Filters

• Decimation from 1 to 256

• Two Pin Interface for Down Conversion by FS/4

• Multiplier for Mixing or Scaling Input with an External Source

• Serial I/O Compatible with Most DSP Microprocessors

• Pb-Free Plus Anneal Available (RoHS Compliant)







Product Photos

28-SOIC, M28.3 PKG

Standard Package



Integrated Circuits (ICs)


Interface - Filters - Active





Filter Type

Serial I/O

Frequency - Cutoff or Center


Number of Filters


Filter Order


Voltage - Supply

4.75 V ~ 5.25 V

Mounting Type

Surface Mount

Package / Case

28-SOIC (0.295", 7.50mm Width)

Supplier Device Package




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(goods weight below 3Kg) ,during 20130901-20130930 .

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