ADSP-2189NKST-320

Digital Signal Processor Dsp Overview

The ADSP-2189NKST-320 is a 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 32K words (24-bit) program memory and 48K words (16-bit) data memory. Key architectural components include an ALU, multiplier/accumulator, barrel shifter, two data address generators, and a program sequencer supporting zero-overhead looping.

Digital Signal Processor Dsp Feature Summary

• ADSP-2100 family code compatible with algebraic syntax and instruction set extensions
• Dual-purpose program memory allowing simultaneous instruction and data fetches
• Two double-buffered serial ports (SPORTs) with hardware companding support
• Flexible I/O supporting 1.8 V, 2.5 V, or 3.3 V operation with 3.6 V input tolerance

Digital Signal Processor Dsp Applications

• Digital signal processing applications requiring high-performance fixed-point computation
• Battery-operated portable equipment utilizing low-power modes
• Systems requiring glueless interface to off-chip RAM and I/O peripherals

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Ensure compatibility with existing ADSP-21xx software libraries due to family code compatibility. Check for any recent product change notices regarding pinout or electrical specifications before finalizing procurement.

Digital Signal Processor Dsp Selection Notes

Select this component when designing systems that require pin-compatible upgrades within the ADSP-218xN family. The choice is primarily driven by the required amount of on-chip memory; compare the 32K word program and 48K word data memory against other members like the ADSP-2187N or ADSP-2188N. Consider the 144-ball BGA package availability if space constraints are critical.

Digital Signal Processor Dsp Part Context

This part belongs to the ADSP-218xN series, which includes six single-chip microcomputers differentiated solely by on-chip SRAM capacity. All members share pin compatibility and the ADSP-2100 base architecture. The series is designed to provide flexibility in design decisions while maintaining code compatibility across the family.

Digital Signal Processor Dsp Replacement Considerations

Other members of the ADSP-218xN series, such as the ADSP-2187N or ADSP-2188N, are pin-compatible alternatives. Selection depends on whether the application requires less or more on-chip memory than the 32K/48K configuration provided by the ADSP-2189N.