Analog Devices Inc. AD21477WYSWZ1A02

Overview

AD21477WYSWZ1A02 from Analog Devices is a 32-bit/40-bit floating-point SHARC® DSP optimized for high-performance audio processing, operating at up to 200 MHz with 2 Mbits of on-chip SRAM and no ROM, in a 100-lead LQFP package. It features eight serial ports (SPORTs), one S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), and digital applications interface (DAI) routing for real-time audio I/O management in automotive infotainment systems.

For engineers reviewing the AD21477WYSWZ1A02 datasheet, AD21477WYSWZ1A02 pinout, AD21477WYSWZ1A02 application, or AD21477WYSWZ1A02 equivalent, this page delivers verified technical context, validated pin functions, confirmed audio-peripheral integration, and precise AEC-Q100 qualification status for automotive-grade signal processing design.

Technical Context

The AD21477WYSWZ1A02 implements a dual-processing-element SIMD core (PEx/PEy) with IEEE 32-bit single-precision and 40-bit extended-precision floating-point support, enabling 1.2 GFLOPS at 200 MHz. Its memory architecture includes four independent SRAM blocks (Block 0–3), each accessible via PM/DM buses for single-cycle instruction+data fetches.

Peripheral integration centers on the Digital Applications Interface (DAI), providing 20 DAI pins and 14 DPI pins for flexible routing of S/PDIF, ASRC, IDP/PDAP, and PCG signals - all synchronized to dedicated precision clock generators. The device lacks external port (SDRAM/AMI) support and watchdog timer/RTC functionality, consistent with its 100-lead LQFP package constraints.

Key Specifications

Pinout & Package

AD21477WYSWZ1A02 is housed in a 100-lead LQFP_EP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Analog Devices Rev. E datasheet Sections 11–12 and 100-LQFP_EP Lead Assignment (Page 68). All pins support 3.3 V I/O with 2 mA drive strength and ±2 kV HBM ESD rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance audio DSP applications.

Compared with AD21477WYSWZ1A02, the AD21478WYSWZ2A02 offers higher clock speed and memory within identical packaging, while the AD21479WYSWZ3A02 introduces system-level peripherals at the cost of package migration and layout revision.

Availability

AD21477WYSWZ1A02 is available at Aetrix Electronics and suitable for automotive infotainment, professional audio equipment, home theater receivers, and medical ultrasound beamformers requiring stable component supply and AEC-Q100-compliant signal processing.

Supply support for AD21477WYSWZ1A02 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 digital signal processing technologies for precision signal chain applications.

The AD21477WYSWZ1A02 belongs to the SHARC® DSP product line, engineered specifically for deterministic, low-latency audio and sensor signal processing in safety-critical and resource-constrained embedded systems.

FAQ

What is the maximum operating frequency of the AD21477WYSWZ1A02?

The AD21477WYSWZ1A02 operates at a maximum frequency of 200 MHz, delivering 1.2 GFLOPS peak performance. This speed is validated across the full commercial temperature range (0°C to +70°C) and supports real-time execution of 1024-point FFTs in 45.885 μs. The AD21477WYSWZ1A02 does not support frequencies above 200 MHz - higher-speed variants (e.g., AD21478WYSWZ2A02) require different silicon revisions and are not drop-in replacements.

Does the AD21477WYSWZ1A02 include on-chip ROM?

No, the AD21477WYSWZ1A02 contains no factory-programmed ROM. It relies entirely on external boot sources such as SPI flash, parallel memory, or UART. This configuration aligns with Table 2 of the ADSP-2147x datasheet Rev. E, which explicitly lists ROM as "N/A" for the ADSP-21477 variant. The AD21477WYSWZ1A02 uses its 2 Mbits of SRAM exclusively for code and data storage after boot.

Which package type is used for the AD21477WYSWZ1A02?

The AD21477WYSWZ1A02 is packaged in a 100-lead LQFP_EP (lead-free, exposed pad) measuring 14 mm × 14 mm with 0.5 mm pitch. This package is confirmed in Table 2 and the "100-LQFP_EP Lead Assignment" section (Page 68) of the ADSP-2147x datasheet Rev. E. It does not support external port (SDRAM/AMI) functionality - those features are exclusive to the 196-ball CSP_BGA variant.

Is the AD21477WYSWZ1A02 qualified for automotive applications?

Yes, the AD21477WYSWZ1A02 is AEC-Q100 Grade 3 qualified, certified for operation from –40°C to +85°C case temperature. This qualification covers thermal cycling, mechanical shock, and humidity testing per automotive reliability standards. The "A02" suffix in the part number denotes the automotive-grade version, distinct from industrial variants that lack this certification.

What audio-specific peripherals are integrated into the AD21477WYSWZ1A02?

The AD21477WYSWZ1A02 integrates eight serial ports (SPORTs), one S/PDIF transceiver, four asynchronous sample rate converters (ASRCs), an input data port (IDP/PDAP), and four precision clock generators (PCGs), all interconnected via the Digital Applications Interface (DAI). These peripherals are fully documented in Table 2 and Figure 1 of the ADSP-2147x datasheet Rev. E and enable end-to-end digital audio path management without external glue logic.