ADSP-2181KS-115

Digital Signal Processor Dsp Overview

The ADSP-2181KS-115 is a single-chip microcomputer optimized for digital signal processing and high-speed numeric applications. Fabricated in a high-speed, double-metal, low-power CMOS process, it operates with a 25 ns instruction cycle time derived from a 20 MHz crystal at 5.0 volts. The processor delivers 40 MIPS sustained performance through single-cycle instruction execution and context switching. It features a three-bus architecture allowing dual operand fetches per cycle. Integration includes 80K bytes of on-chip RAM configured as 16K words of program memory and 16K words of data memory, alongside independent ALU, MAC, and shifter computational units.

Digital Signal Processor Dsp Feature Summary

• 40 MIPS sustained performance with 25 ns instruction cycle time
• 80K bytes on-chip RAM (16K words PM / 16K words DM)
• Three-bus architecture enabling dual operand fetches per cycle
• Two double-buffered serial ports with hardware companding

Digital Signal Processor Dsp Applications

• Digital signal processing systems
• High-speed numeric processing applications
• Battery-operated portable equipment requiring low power modes

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix KS-115 against official Analog Devices documentation to confirm package type and temperature range specifications. Ensure compatibility with the 128-lead TQFP or PQFP form factor required by the target design. Cross-reference the manufacturing date code to ensure availability of the CMOS process technology described in the datasheet.

Digital Signal Processor Dsp Selection Notes

Select this component when a fixed-point DSP requires extensive on-chip memory and glueless interface capabilities. The ADSP-2181 supports the ADSP-2100 family instruction set, facilitating code reuse. Consider its zero-overhead looping and single-cycle context switch features for real-time control applications. Verify that the 5.0V operating voltage aligns with the system power supply requirements.

Digital Signal Processor Dsp Part Context

The ADSP-2181 belongs to the ADSP-21xx family of digital signal processors. It builds upon the ADSP-2100 base architecture, adding instruction set extensions such as bit manipulation and new multiplication instructions. This lineage ensures software compatibility with earlier members of the family while providing enhanced integration and performance characteristics for modern embedded applications.

Digital Signal Processor Dsp Replacement Considerations

Consult the Analog Devices product selection guide for direct pin-compatible or functionally equivalent successors within the SHARC or Blackfin families. Verify architectural differences if migrating from the fixed-point ADSP-2181 to floating-point alternatives.