AD21488WBSWZ2A02

Overview

The AD21488WBSWZ2A02 is an automotive-grade SHARC digital signal processor from Analog Devices, designed for high-performance audio applications. 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 mask-programmable ROM containing Dolby and DTS audio decoders. Key peripherals include a Digital Applications Interface (DAI), S/PDIF transceiver, asynchronous sample rate converters, and eight serial ports. It is AEC-Q100 qualified and housed in a 176-lead LQFP_EP package.

Feature Summary

• SIMD Architecture: Dual processing elements (PEX, PEY) delivering up to 2.7 GFLOPS at 450 MHz; this model rated at 400 MHz.
• On-Chip Memory: 5 Mbits SRAM and 4 Mbits ROM pre-loaded with multichannel audio decoding algorithms.
• Audio Peripherals: Integrated S/PDIF transceiver, four precision clock generators, four ASRCs, and eight SPORTs.
• Automotive Qualification: AEC-Q100 Grade 1 certified for operation between -40°C and +125°C junction temperature.

Applications

• High-fidelity automotive audio amplifiers and head units
• Active noise cancellation systems
• Digital signal processing for surround sound environments

Procurement Notes

Verify the specific suffix '2A02' against the manufacturer's current ordering guide, as revisions may impact memory configuration or qualification status. Confirm availability through authorized distributors, as automotive-grade components often have restricted supply chains. Ensure compliance with RoHS and REACH regulations for the target market.

Selection Notes

Select this component when 5 Mbits of internal RAM is required alongside factory-programmed audio codecs. Compare with the ADSP-21489 if higher 450 MHz performance is needed, or the ADSP-21483 if 3 Mbits RAM suffices. Ensure the 176-lead LQFP_EP package fits the PCB footprint constraints, as smaller packages like LFCSP lack the external port interface.

Part Context

This part belongs to the ADSP-2148x family, which shares source code compatibility with previous SHARC generations like the ADSP-2136x and ADSP-2146x. The 'W' designation typically indicates automotive qualification, while 'BS' denotes the 176-lead LQFP_EP package type. The '2A02' suffix specifies the specific speed grade, memory configuration, and factory programming options defined in the datasheet ordering guide.

Replacement Considerations

Direct pin-compatible replacements within the same package are limited to other ADSP-2148x variants. The ADSP-21489 offers similar features but runs at 450 MHz. The ADSP-21483 has reduced RAM (3 Mbits). Cross-family migration to TigerSharc or Blackfin requires significant architectural redesign.