AD21488WBSWZ402

Overview

The AD21488WBSWZ402 is an automotive-grade SHARC digital signal processor from Analog Devices, designed for high-performance audio processing. It features a 32-bit/40-bit floating-point SIMD computational architecture with two processing elements (PEx and PEy). The device operates at a maximum clock frequency of 400 MHz and includes 5 Mbits of on-chip RAM and 4 Mbits of on-chip ROM. It utilizes a Super Harvard Architecture to eliminate I/O bottlenecks and supports Variable Instruction Set Architecture (VISA) for code efficiency. The component is AEC-Q100 qualified and housed in a 176-lead LQFP_EP package.

Feature Summary

• SIMD Computational Engine: Two parallel processing elements (PEx, PEy) delivering up to 2.7 GFLOPS at 450 MHz; this specific model runs at 400 MHz.
• On-Chip Memory: 5 Mbits of internal SRAM and 4 Mbits of mask-programmable ROM containing Dolby and DTS audio decoding algorithms.
• Audio-Centric Peripherals: Includes Digital Applications Interface (DAI), Serial Ports, Precision Clock Generators, S/PDIF transceiver, and Asynchronous Sample Rate Converters.
• Automotive Qualification: AEC-Q100 certified for automotive applications with an operating temperature range of -40°C to +125°C.

Applications

• High-performance automotive audio processing systems
• Digital signal processing requiring SIMD acceleration
• Applications utilizing Dolby or DTS audio decoding

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current data sheet to confirm package type and speed grade. Confirm AEC-Q100 qualification status if required for automotive integration. Check for any recent product change notices regarding assembly relocation or material composition updates.

Selection Notes

Select this model for designs requiring 400 MHz performance with 5 Mbits of RAM. Note that the ADSP-21488 family has variants with different RAM sizes (e.g., 2 Mbits or 3 Mbits); ensure the 5 Mbit configuration matches the memory requirements. Verify package availability, as some speeds are limited to specific packages like the 176-lead LQFP_EP.

Part Context

This component belongs to the ADSP-2148x family of SHARC processors, which are source-code compatible with previous generations like the ADSP-2147x and ADSP-2136x. The family shares a common core architecture but varies in memory size, clock speed, and peripheral availability. The ADSP-21488 specifically targets audio applications with integrated decoder ROM.

Replacement Considerations

Direct substitutes within the same family include other ADSP-2148x models such as ADSP-21489 (450 MHz) or ADSP-21486 (400 MHz, 5 Mbit RAM). Ensure pin compatibility and memory size requirements are met when considering alternatives.