The ADSP-21483KSWZ-4B belongs to Analog Devices' fourth-generation SHARC processor family.

It uses a SIMD SHARC architecture supporting both 32-bit fixed-point and 32-/40-bit floating-point arithmetic, making it particularly suitable for demanding digital audio and signal-processing workloads.

At 400MHz, the ADSP-21483 can deliver up to 2400 MFLOPS and integrates dedicated FIR, IIR and FFT hardware accelerators to reduce the processing load on the main DSP core.

Key Specifications

Typical Applications

The ADSP-21483 was designed primarily for high-performance digital audio and signal-processing systems, including:

• Professional audio equipment

• Digital mixing consoles

• Audio effects processors

• AV receivers

• Surround-sound systems

• Automotive audio systems

• Industrial signal processing

• Legacy SHARC-based embedded systems

Its floating-point architecture and integrated audio interfaces made it particularly useful for systems running multiple audio processing algorithms simultaneously.

ADSP-21483KSWZ-4B Replacement

There is no universal drop-in replacement that should automatically be substituted for the ADSP-21483KSWZ-4B.

For new designs, newer SHARC+® processor families, including ADSP-SC58x and ADSP-2158x generations, may provide a migration path with higher processing capability.

Analog Devices has published specific technical guidance comparing ADSP-214xx peripherals with ADSP-SC58x / ADSP-2158x processors, indicating that migration requires peripheral and system-level evaluation rather than simple component substitution.

Important migration considerations include:

• Existing SHARC software

• Required processing performance

• SPORT configuration

• SDRAM interface

• Audio peripherals

• Package and pinout

• Power supply architecture

• Development environment

For legacy equipment where redesign is undesirable, sourcing the original ADSP-21483KSWZ-4B may remain the preferred solution.

FAQ

Is ADSP-21483KSWZ-4B obsolete?

Yes. Analog Devices currently lists the ADSP-21483 product family as Obsolete.

What is the clock speed of ADSP-21483KSWZ-4B?

The ADSP-21483KSWZ-4B operates at up to 400MHz.

How much RAM does ADSP-21483KSWZ-4B have?

The device integrates 3Mbit of on-chip RAM.

What package does ADSP-21483KSWZ-4B use?

It uses a 176-lead LQFP with exposed pad, package option SW-176-2.

Does ADSP-21483 support floating-point processing?

Yes. The SHARC architecture supports 32-bit and 40-bit floating-point arithmetic, in addition to 32-bit fixed-point processing.

Is there a direct replacement for ADSP-21483KSWZ-4B?

There is no simple drop-in replacement recommended for every design. Newer SHARC+ processors may be suitable for redesigns, but hardware, peripherals and software compatibility should be evaluated.

Where can I request ADSP-21483KSWZ-4B stock?

DataStorageIC supports RFQs for ADSP-21483KSWZ-4B and other obsolete Analog Devices SHARC DSPs. Submit the full part number and required quantity for availability and pricing.