ADSP-2188NBSTZ-320

Digital Signal Processor Dsp Overview

The ADSP-2188NBSTZ-320 is a member of the Analog Devices ADSP-218xN series, a high-performance fixed-point digital signal processor. Fabricated using a 0.18 μm CMOS process, it delivers an 80 MIPS sustained performance with a 12.5 ns instruction cycle time at 1.8 V. The device integrates up to 48K words of program memory and 56K words of data memory on-chip. It features a three-bus architecture enabling dual operand fetches per cycle, independent ALU, MAC, and shifter units, and two double-buffered serial ports. The processor supports flexible I/O levels (1.8 V, 2.5 V, or 3.3 V) and includes low-power modes such as power-down with rapid recovery.

Digital Signal Processor Dsp Feature Summary

• 80 MIPS sustained performance with single-cycle instruction execution and context switching.
• Integrated memory configuration of 48K words program RAM and 56K words data RAM.
• Three-bus architecture allowing simultaneous fetch of instructions and two operands.
• Dual synchronous serial ports (SPORTs) with hardware companding and autobuffering.

Digital Signal Processor Dsp Applications

• High-performance fixed-point digital signal processing applications requiring code compatibility with the ADSP-2100 family.
• Battery-operated portable equipment utilizing low-power idle and power-down modes.
• Systems requiring glueless interface to off-chip RAM and I/O peripherals via programmable wait states.

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Ensure that any external components, such as crystals for the CLKIN and XTAL pins, meet the specified electrical characteristics. Confirm that the design accommodates the required voltage levels for the flexible I/O interfaces.

Digital Signal Processor Dsp Selection Notes

Select this model when the application requires 48K words of program memory and 56K words of data memory within the ADSP-218xN family. Consider the ADSP-2188N if zero-overhead looping and dual DAG address generators are necessary for efficient circular buffer processing. Evaluate the 1.8 V operating voltage against system power constraints compared to other family members.

Digital Signal Processor Dsp Part Context

The ADSP-2188NBSTZ-320 belongs to the ADSP-218xN series, which shares pin compatibility across all family members. Differentiation within the series is determined solely by the amount of on-chip SRAM. This series maintains code compatibility with the broader ADSP-2100 family, facilitating migration from older architectures while offering enhanced integration and lower power consumption through 0.18 μm CMOS technology.

Digital Signal Processor Dsp Replacement Considerations

Other members of the ADSP-218xN series, such as the ADSP-2187N or ADSP-2189N, are pin-compatible alternatives. Selection depends on whether the specific memory capacity of 48K words program and 56K words data RAM is required or if a different memory configuration better suits the application constraints.