Analog Devices Inc. AD21478WYSWZ2A02

Overview

AD21478WYSWZ2A02 from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 300 MHz with 3 Mbits of on-chip SRAM and 4 Mbits of factory-programmed ROM containing Dolby/DTS audio decoders. It integrates dual SIMD computational units (PEx/PEy), eight serial ports (SPORTs), S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), and digital applications interface (DAI) with precision clock generators.

For engineers reviewing the AD21478WYSWZ2A02 datasheet, AD21478WYSWZ2A02 pinout, AD21478WYSWZ2A02 application, or AD21478WYSWZ2A02 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade AEC-Q100 qualification, real-world audio system integration examples, and two rigorously cross-checked alternative SHARC processors - all grounded in Analog Devices' Rev. E documentation and official package assignments.

Technical Context

The AD21478WYSWZ2A02 implements a dual-processing-element SIMD core with independent ALU/multiplier/shifter units per PE, enabling 1.8 GFLOPS at 300 MHz. Its memory architecture supports simultaneous 64-bit PM/DM bus transfers and includes four configurable SRAM blocks (Block 0–3) totaling 3 Mbits, plus 4 Mbits of ROM mapped across reserved address ranges (e.g., 0x0004_0000–0x0004_7FFF).

Peripherally, it features a dedicated I/O processor domain with DAI routing, S/PDIF Tx/Rx, PCG-controlled audio clocks, and ASRCs supporting –128 dB SNR. The 88-lead LFCSP_VQ package excludes external port pins (SDRAM/AMI), disabling those interfaces - a constraint explicitly documented for this variant in Table 2 and Pin Function Descriptions.

Key Specifications

Pinout & Package

AD21478WYSWZ2A02 uses the 88-lead LFCSP_VQ package (7 mm × 7 mm, 0.5 mm pitch), as specified in Analog Devices Rev. E documentation (Page 66). This variant omits external port (SDRAM/AMI) pins - a deliberate exclusion confirmed in Table 2 footnote 1 and Pin Function Descriptions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SHARC DSP applications.

Compared with AD21477WYSWZ2A02 and AD21479WYSWZ2A02, the AD21478WYSWZ2A02 uniquely balances 300 MHz performance, 3 Mbits SRAM, and 4 Mbits licensed audio ROM in the compact 88-LFCSP_VQ package - making it optimal for space-constrained automotive and pro-audio modules requiring certified decoders without external memory expansion.

Availability

AD21478WYSWZ2A02 is available at Aetrix Electronics and suitable for professional audio mixers, automotive infotainment head units, studio audio interfaces, and high-end home theater receivers requiring stable component supply across extended product lifecycles.

Supply support for AD21478WYSWZ2A02 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and DSP technologies for precision signal processing applications.

The AD21478WYSWZ2A02 belongs to the SHARC® family - engineered specifically for computationally intensive, low-latency audio signal processing in automotive, professional, and consumer systems demanding deterministic real-time behavior.

FAQ

What is the maximum operating frequency of the AD21478WYSWZ2A02?

The AD21478WYSWZ2A02 operates at up to 300 MHz, enabling benchmark performance of 30.59 μs for a 1024-point complex FFT and 1.66 ns per FIR filter tap. This frequency is validated across the full industrial temperature range and is supported by the on-chip PLL with CLKIN input.

Does the AD21478WYSWZ2A02 include factory-programmed audio decoders?

Yes, the AD21478WYSWZ2A02 contains 4 Mbits of factory-programmed ROM with licensed Dolby and DTS audio decoders. This eliminates the need for external boot ROM and accelerates time-to-market for products requiring certified audio codec support.

Which package does the AD21478WYSWZ2A02 use, and does it support external memory interfaces?

The AD21478WYSWZ2A02 uses the 88-lead LFCSP_VQ package. As confirmed in Analog Devices Rev. E documentation, this variant does not include SDRAM or AMI pins - external memory interfaces are disabled, and all processing relies on the 3 Mbits of on-chip SRAM and 4 Mbits of ROM.

Is the AD21478WYSWZ2A02 qualified for automotive applications?

Yes, the AD21478WYSWZ2A02 is AEC-Q100 qualified for Grade 2 (–40°C to +105°C) operation. It is designed for automotive infotainment, ADAS audio preprocessing, and cabin sensing systems, with integrated thermal diode and enhanced ESD robustness.

What audio-specific peripherals are integrated into the AD21478WYSWZ2A02?

The AD21478WYSWZ2A02 integrates an S/PDIF transceiver, four asynchronous sample rate converters (ASRCs) with –128 dB SNR, eight serial ports (SPORTs), digital applications interface (DAI) with 20-pin signal routing, and four precision clock generators (PCGs) - all optimized for professional and automotive audio timing integrity.