HSP43124SC-45Z

Overview

The HSP43124SC-45Z is a high-performance digital serial I/O filter engine designed to offload signal processing tasks from DSP microprocessors. It supports programmable FIR filters with up to 256 taps and cascades of up to five fixed-coefficient halfband filters, achieving maximum decimation of 256. The device operates at clock rates up to 45MHz with 24-bit data and 32-bit coefficients. It features a dedicated multiplier for spectral shifting via an on-board ROM or external input, enabling digital down-conversion by Fs/4. Configuration and coefficient loading occur over an 8-bit bidirectional interface, while serial I/O remains compatible with standard DSP ports.

Feature Summary

• Supports programmable FIR filters up to 256 taps and cascaded halfband filters for flexible decimation ratios.

Applications

• Digital tuner implementations
• Low-cost FIR filter solutions
• Filter co-processor units

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and Pb-free plus anneal specifications for soldering compatibility. Ensure the package marking matches the ordered part number exactly. Check for any specific handling requirements related to the SOIC package type during assembly.

Selection Notes

Select this component when system architecture requires hardware-accelerated filtering to reduce DSP load. Evaluate FCLK requirements against input sample rates and desired tap counts using provided equations. Consider the availability of symmetric versus asymmetric coefficient storage limits when designing filter responses.

Part Context

This device belongs to the HSP43124 series of serial I/O filters manufactured by Intersil (now Renesas Electronics). It serves as a specialized peripheral for real-time signal processing applications requiring precise decimation and frequency translation capabilities without consuming main processor cycles.

Replacement Considerations

The datasheet explicitly states 'NO RECOMMENDED REPLACEMENT'. Contact Technical Support for potential alternatives if redesign is necessary due to end-of-life status.