ADSP-2185NKCA-320

Digital Signal Processor Dsp Overview

The ADSP-2185NKCA-320 is a fixed-point digital signal processor from the Analog Devices ADSP-218xN series, fabricated in a 0.18 μm CMOS process. It features a 12.5 ns instruction cycle time at 1.8 V, delivering 80 MIPS sustained performance with single-cycle execution. The device integrates up to 256K bytes of on-chip SRAM, configured as 16K words (24-bit) of program memory and 16K words (16-bit) of data memory. Key architectural components include an ALU, multiplier/accumulator, barrel shifter, two data address generators, and a program sequencer. System interfaces comprise two serial ports, a 16-bit internal DMA port, a byte DMA port, and programmable I/O.

Digital Signal Processor Dsp Feature Summary

• High-performance 80 MIPS processing with 12.5 ns instruction cycle time
• Integrated 16K words program RAM and 16K words data RAM
• Dual-purpose program memory for simultaneous instruction and data fetches
• Zero-overhead looping via powerful program sequencer and loop stacks

Digital Signal Processor Dsp Applications

• Battery-operated portable equipment requiring low power dissipation
• Digital signal processing applications utilizing ADSP-2100 family code compatibility
• Systems requiring flexible I/O with 1.8 V, 2.5 V, or 3.3 V operation

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type, temperature range, and lead-free status. Ensure that any assumed functional differences based on suffix variations are explicitly supported by the official datasheet revision history or ordering guide.

Digital Signal Processor Dsp Selection Notes

Select this model within the ADSP-218xN family based on the required 16K word program and data memory configuration. Consider the 144-ball BGA package for space-constrained designs. Evaluate power requirements, noting the 1.8 V core voltage and low-power modes including power-down and idle states suitable for battery applications.

Digital Signal Processor Dsp Part Context

This component belongs to the ADSP-218xN series, which includes members like the ADSP-2184N, ADSP-2186N, ADSP-2187N, ADSP-2188N, and ADSP-2189N. All series members share pin compatibility and the ADSP-2100 base architecture, differing primarily in the amount of on-chip SRAM available.

Digital Signal Processor Dsp Replacement Considerations

Other members of the ADSP-218xN series (e.g., ADSP-2184N, ADSP-2186N) are pin-compatible alternatives with different memory sizes. Verify that the memory capacity of the substitute part meets the application requirements before replacement.