ADSP-21489BSWZ-4B - 400MHz SHARC DSP | Analog Devices
MPN: ADSP-21489BSWZ-4B ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $15.3928 | $15.39 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADSP-21489BSWZ-4B Overview
A digital signal processor, or DSP, is a semiconductor optimized to execute mathematical operations on sampled signals in real time. Its architecture can process audio samples, control loops, filters, transforms, and other numerical workloads more efficiently than a general-purpose processor when the algorithm is mapped to available DSP resources. Within the semiconductor hierarchy, the ADSP-21489 is a microprocessor-class SoC and belongs to the broader embedded processing and digital signal processing categories.
The supplied product data identifies the device as a 400 MHz floating-point processor with a 176-lead LQFP exposed-pad package. Analog Devices describes the ADSP-21489 family as offering increased performance, hardware-based filter accelerators, and audio applications support. The processor family is also described as assembly-level code compatible with several earlier SHARC generations, which can simplify migration of suitable software projects. Detailed clock, memory, I/O, voltage, thermal, and peripheral specifications remain unavailable in the supplied verification set and must be confirmed in the manufacturer datasheet.
Typical signal-processing uses include real-time audio processing, filtering, industrial control, communications infrastructure, instrumentation, and embedded systems with predictable numerical workloads. The exposed thermal pad supports heat transfer from the package when the board provides adequate copper and thermal vias, although exact junction-temperature limits and power figures were not supplied. Hardware acceleration is particularly relevant when the software must filter or transform data continuously without relying solely on general-purpose instruction throughput.
For a new design, engineers should confirm the required external memory, clock source, serial interface, voltage rails, boot mode, and pin multiplexing against the ADSP-21489 datasheet before layout begins. The large exposed-pad package also demands careful land-pattern reproduction, via placement, and thermal-plane design. Do not substitute a similarly named SHARC device unless its package, pinout, voltage, clock, memory interface, peripheral set, and software constraints are explicitly verified.
This page consolidates verified distributor and manufacturer information, distinguishes exact facts from missing parameters, and avoids presenting unverified pin assignments or electrical ratings as guaranteed specifications. It also records the availability of official documentation and distributor sourcing options for engineering review.
Drop-in alternatives for ADSP-21489BSWZ-4B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADSP-21489BSWZ-4A
✅ Drop-In📋 Reference alternative (not in catalog)
ADSP-21489BSWZ-3A
✅ Drop-In📋 Reference alternative (not in catalog)
ADSP-21489KSWZ-4A
✅ Drop-In📋 Reference alternative (not in catalog)
ADSP-21489BSWZ-4B Specifications
| Product Type | Floating-point digital signal processor (DSP) |
| Processor Family | SHARC Processor |
| Core Clock | 400 MHz |
| Data Width | 32-bit/40-bit |
| Package Type | 176-lead LQFP with exposed pad |
| Package Dimensions | 24 x 24 mm |
| Mounting Type | Surface mount |
| Generation | Fourth-generation SHARC Processor |
| Assembly-Level Code Compatibility | Compatible at assembly level with ADSP-2147x, ADSP-2146x, ADSP-2137x, ADSP-2136x, ADSP-2126x, ADSP-21160, ADSP-21161, and first-generation ADSP-2106x processors |
| Hardware Filter Accelerators | Supported |
| Audiocentric Peripherals | Supported in the ADSP-2148x family |
| Automotive Qualification | Qualified for automotive applications |
| RoHS | RoHS compliant |
| Pin Count | 176 pins |
| Supplier Packaging | Tray |
ADSP-21489BSWZ-4B 24 x 24 mm Pin Configuration Guide
Pin configuration for ADSP-21489BSWZ-4B (24 x 24 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADSP-21489BSWZ-4B.
Refer to the datasheet for full pin configuration.
Typical Applications
ADSP-21489BSWZ-4B is suitable for 6 applications: Real-Time Audio Processing, Industrial Control and Measurement, Communications Signal Conditioning, Audio Equipment and Audio-Centric Peripherals, Embedded Instrumentation, Industrial Audio and Acoustic Monitoring.
Real-Time Audio Processing
The ADSP-21489BSWZ-4B fits real-time audio systems requiring deterministic floating-point computation and dedicated filtering support. Its 400 MHz SHARC processing core and hardware-based filter accelerators can handle audio filtering, mixing, and signal transformation workloads, while the ADSP-2148x family’s audiocentric peripherals help organize audio-oriented designs. The processor is used as the central digital signal-processing engine rather than as a general-purpose host processor. Before implementation, verify the required audio serial interface, sample-rate support, memory resources, and exact peripheral configuration against the manufacturer datasheet.
Recommended
Industrial Control and Measurement
The ADSP-21489BSWZ-4B is suitable for industrial control and measurement systems that combine sensor acquisition with real-time numerical processing. A 400 MHz floating-point SHARC core can execute filtering, control calculations, signal conditioning, and data reduction without relying entirely on a host CPU. The processor family’s assembly-level compatibility with earlier SHARC generations can also help teams reuse qualified algorithms during platform upgrades. The exact control-loop latency, external memory interface, voltage rails, and industrial temperature requirements must be confirmed from the official datasheet before committing to a control board.
Recommended
Communications Signal Conditioning
The ADSP-21489BSWZ-4B can support communications signal-conditioning and demodulation functions where sampled data requires predictable filtering and numerical processing. The 400 MHz floating-point architecture is relevant to front-end compensation, channel equalization, modulation-related calculations, and other fixed or adaptive signal-processing tasks. Hardware-based filter accelerators can reduce software overhead for filtering-heavy paths, although the final algorithm partition depends on the available peripherals and memory bandwidth. Engineers should verify the required serial links, external memory, clocking, packet timing, and system-level synchronization in the datasheet.
Recommended
Audio Equipment and Audio-Centric Peripherals
The ADSP-21489BSWZ-4B is a natural fit for audio equipment requiring a dedicated audiocentric processing engine. Analog Devices specifically describes the ADSP-21489 family as offering increased performance, hardware-based filter accelerators, and audiocentric peripherals, making it suitable for multi-channel processing, audio routing, equalization, and other filter-centered functions. The processor can operate alongside codecs, memory, and interface circuitry, but those external devices are not identified in the supplied source data and therefore are not listed as confirmed companions. Validate codec timing, sample-rate conversion, clock sources, and latency before finalizing the audio architecture.
Recommended
Embedded Instrumentation
The ADSP-21489BSWZ-4B can serve as the processing core in embedded instrumentation that performs acquisition conditioning, filtering, calibration, and numerical analysis. Its floating-point DSP architecture is useful when algorithms require higher numerical flexibility than an integer-only embedded controller. The 176-lead LQFP exposed-pad package provides a substantial pin and power-connectivity budget for systems requiring multiple interfaces and a carefully designed thermal path. The supplied data does not specify instrumentation-specific ratings, so engineers should confirm clock accuracy, ADC/DAC integration, memory interface behavior, and operating-temperature limits in the manufacturer documentation.
Recommended
Industrial Audio and Acoustic Monitoring
The ADSP-21489BSWZ-4B can support acoustic monitoring systems that combine sensor conditioning with real-time digital filtering and analysis. Its 400 MHz floating-point SHARC core is suited to workloads such as spectral processing, noise reduction, feature extraction, and adaptive filtering when those functions are mapped carefully to the processor’s resources. The audiocentric peripherals and hardware filter accelerators are useful architectural reasons to evaluate this processor for audio-path designs. Deployment still requires verified analog front-end data, clocking, memory, interface, thermal, and environmental requirements; those values are not present in the supplied search data.
Recommended
Recommended Products Summary
Engineering reference data for ADSP-21489BSWZ-4B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADSP-21489BSWZ-4A | ADSP-21489BSWZ-3A | ADSP-21489KSWZ-4A |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 176-lead LQFP with exposed pad, 24 x 24 mm | 176-lead LQFP with exposed pad; verify exact dimensions | 176-lead LQFP with exposed pad; verify exact dimensions | 176-lead LQFP with exposed pad; verify exact dimensions |
| Processor Family | Fourth-generation SHARC | SHARC ADSP-21489 family | SHARC ADSP-21489 family | SHARC ADSP-21489 family |
| Software Compatibility | Assembly-level compatible with listed earlier SHARC generations | Same family; verify detailed compatibility | Same family; verify detailed compatibility | Same family; verify detailed compatibility |
Key Differentiators
- High-frequency floating-point SHARC processing (vs ADSP-21489BSWZ-4A)
- Dedicated filter acceleration for signal-processing designs (vs ADSP-21489BSWZ-3A)
- Fourth-generation SHARC software migration path (vs ADSP-21489KSWZ-4A)
Design Notes
Reproduce the official ADSP-21489BSWZ-4B land pattern exactly, including the 176-lead LQFP geometry and exposed-pad connection. The verified distributor data identifies a 24 x 24 mm package, but it does not provide pad dimensions, solder-mask details, or via recommendations. Use the Analog Devices package drawing as the controlling source, validate courtyard and paste geometry with PCB-library data, and do not substitute a generic 176-pin footprint without checking pin numbering and exposed-pad mapping.
The exposed thermal pad is part of the package thermal path, not an optional decorative feature. Provide a continuous thermal copper region where the manufacturer footprint permits, connect it through the recommended thermal-via pattern, and verify the resulting junction temperature with the actual clock, voltage, memory activity, and enclosure conditions. The supplied data does not provide thermal resistance or power ratings, so no numerical heat-sink or via calculation is asserted here; use the official datasheet and application guidance before release.
Separate clock, high-speed serial, memory, and sensitive analog-adjacent routing as appropriate for the complete system. Because the provided data does not specify the ADSP-21489 pin multiplexing, I/O standards, impedance requirements, or external-memory topology, route from the official pinout and interface specifications rather than generic LQFP rules. Keep power and ground connectivity short, preserve the exposed-pad thermal path, and review all external interfaces with the system’s signal-integrity and power-integrity requirements.
Do not treat assembly-level code compatibility as proof that any ADSP-21489 variant is drop-in compatible. The supplied cross-reference results identify ADSP-21489BSWZ-4A, ADSP-21489BSWZ-3A, and ADSP-21489KSWZ-4A as related parts, but they do not provide complete quantified comparisons. Before substitution, verify pinout, package dimensions, voltage, clock, memory, peripheral, boot, thermal, and qualification requirements. Also do not infer REACH, halogen-free, or conflict-minerals status from the verified RoHS statement.
Compliance Information
The verified product data states RoHS compliance and automotive qualification. AEC-Q100 status is recorded as qualified based on the supplied automotive-qualification statement; separate REACH, lead-free, halogen-free, and conflict-minerals declarations were not provided.
