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Home > Products > Integrated Circuits (ICs) > Embedded > DSP (Digital Signal Processors)

Analog Devices Inc. ADSP-21369KSWZ-2A

Name: ADSP-21369KSWZ-2A
Brand: Analog Devices Inc.
SKU: ADSP-21369KSWZ-2A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADSP-21369KSWZ-2A

Manufacturer:: Analog Devices Inc.

Category:: DSP (Digital Signal Processors)

Package:: 208-LQFP Exposed Pad

Datasheet:: ADSP-21369KSWZ-2A.pdf

Description:: IC DSP 333MHZ 208LQFP

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Product details

Overview

ADSP-21369KSWZ-2A from Analog Devices is a 400 MHz, 32-bit/40-bit floating-point SHARC® DSP optimized for high-fidelity automotive and professional audio systems. It integrates 2 Mbits of on-chip SRAM, 6 Mbits of mask-programmable ROM, dual SIMD computational units (PEx/PEy), and audiocentric peripherals including S/PDIF transceiver, 4-channel asynchronous sample rate converter (ASRC), and 8 serial ports. It executes 2.4 GFLOPS and supports real-time FIR filtering at 1.25 ns/tap.

For engineers reviewing the ADSP-21369KSWZ-2A datasheet, ADSP-21369KSWZ-2A pinout, ADSP-21369KSWZ-2A application, or ADSP-21369KSWZ-2A equivalent, key selection criteria include core clock rate, on-chip memory configuration, ASRC channel count, S/PDIF compliance, and BGA_ED package compatibility with thermal and routing constraints in audio signal chain designs.

Technical Context

The ADSP-21369KSWZ-2A implements a dual-processing-element SIMD architecture with independent ALU/multiplier/shifter units per PE, enabling parallel execution of identical instructions on distinct data streams. Its enhanced Harvard bus structure sustains simultaneous 64-bit PM and DM transfers plus 32-bit IOD0/IOD1 peripheral DMA - critical for real-time audio buffering and multi-channel I/O.

Peripherals are partitioned into two clock domains: core domain (400 MHz) hosts PEx/PEy, DAGs, instruction cache, and on-chip memory; I/O processor domain (PCLK) manages DAI, DPI, S/PDIF, ASRC, PWM, and external port controllers - allowing deterministic latency control for time-sensitive audio paths like sample rate conversion and clock generation.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Frequency	400 MHz - enables 2.5 ns instruction cycle time and 2.4 GFLOPS peak performance for real-time audio algorithms.
On-Chip Memory	2 Mbits SRAM + 6 Mbits mask-ROM - supports full audio firmware boot, filter coefficient storage, and zero-wait-state execution without external memory fetch stalls.
SIMD Architecture	Dual PEx/PEy processing elements - delivers parallel arithmetic on stereo or multichannel audio data without software loop overhead.
S/PDIF Interface	Integrated transceiver compliant with IEC-60958 - eliminates external PHY, supports biphase decoding/encoding and jitter-tolerant digital audio I/O.
ASRC Channels	4 independent asynchronous sample rate converters - enables seamless mixing of audio streams at different sampling rates (e.g., 44.1 kHz + 48 kHz) with 128 dB SNR.
Serial Ports	8 SPORTs supporting up to 32 I2S channels - provides direct connection to multiple ADC/DACs (e.g., AD183x family) with TDM frame support and μ-law/A-law companding.
PWM Outputs	16 outputs grouped in 4 × 4 sets - configurable for center/edge-aligned waveforms with double-update mode to reduce harmonic distortion in Class-D amplifier drivers.

Pinout & Package

ADSP-21369KSWZ-2A is packaged in a 256-ball BGA_ED (ball pitch: 1.0 mm, body size: 17 mm × 17 mm) with exposed thermal pad. This RoHS-compliant package supports high-density PCB layouts and efficient heat dissipation in audio amplifier and head unit applications.

Pin/Terminal	Circuit Role	Design Meaning
DAI_P0–P23	Digital Applications Interface I/O	Configurable multiplexed pins routed via SRU to S/PDIF, ASRC, PCG, IDP, or SPORT signals - enables flexible hardware interconnect without fixed wiring.
SPORT0–7_TX/RX	Synchronous Serial Port Data	Dedicated high-speed (50 Mbps) bidirectional serial links for I2S/TDM audio data transfer with per-channel DMA and frame sync error detection.
SDRAM_A[0:12], DQ[0:31]	SDRAM Address/Data Bus	32-bit glueless interface to industry-standard SDRAM (up to 64M words/bank) - supports large audio buffer storage with burst-mode access.
ASRC_CLKIN0–3	ASRC Reference Clock Input	Independent clock inputs per ASRC channel - allows asynchronous domain bridging between disparate audio clocks (e.g., AES42, USB Audio, SPDIF).
JTAG_TCK/TMS/TDO/TDI	IEEE 1149.1 Test Access Port	Supports boundary scan, emulation, and secure debug only after valid 64-bit key authentication - prevents unauthorized code extraction during production programming.

Key Features

Feature	Design Value
ROM-Based Security	Prevents external boot and JTAG access unless authenticated with customer-specific 64-bit key - ensures firmware IP protection in mass-produced audio ECUs.
Dual DAG Hardware	Two independent data address generators with 32 circular buffer sets - enables zero-overhead delay lines and FFT buffers without CPU intervention.
Flexible Instruction Set	48-bit wide instruction word supporting conditional multiply-add-subtract + branch + 4-data fetch in one cycle - reduces instruction count in FIR/IIR filter kernels by >40%.
DAI Signal Routing Unit (SRU)	Software-configurable matrix connecting DAI peripherals to any DAI pin - eliminates need for external crosspoint switches in multi-source audio routing applications.
16-Bit Floating-Point Format	On-the-fly conversion between 32-bit and 16-bit FP formats in single instruction - doubles effective on-chip data storage for coefficient tables without precision loss in audio processing.

Applications

Automotive Infotainment Head Unit	Professional Digital Mixing Console
Use Scenario: Real-time audio processing in vehicle head units with multiple input sources (Bluetooth, USB, tuner, CAN-linked mic), multi-zone output, and active noise cancellation. IC Role / Device Role / Timing Role: Primary audio DSP executing FIR-based acoustic echo cancellation, parametric EQ, dynamic range compression, and ASRC for mixed-sample-rate inputs. Use Value: On-chip 2 Mbit SRAM stores all filter coefficients and state variables; 4 ASRC channels synchronize Bluetooth (44.1 kHz), tuner (48 kHz), and mic (16 kHz) streams without external clock domain crossing logic.	Use Scenario: High-channel-count digital mixer handling 64+ inputs with real-time effects (reverb, pitch shift), monitor mixing, and Dante/AES67 network streaming. IC Role / Device Role / Timing Role: Core processing engine managing low-latency I/O via 8 SPORTs and S/PDIF, running parallel DSP threads across PEx/PEy for concurrent effect chains. Use Value: Dual 400 MHz PEs deliver deterministic sub-100 μs latency for 1024-point FFT-based spectrum analysis and 128-channel FIR filtering - meeting broadcast-grade timing requirements.
High-End Home Theater AV Receiver	Studio-Grade Audio Interface
Use Scenario: 11.2-channel surround sound processing with object-based audio (Dolby Atmos, DTS:X), room correction, and multi-room streaming. IC Role / Device Role / Timing Role: Main DSP handling Dirac Live or Audyssey MultEQ calibration, upmixing, bass management, and HDMI ARC passthrough with lip-sync compensation. Use Value: Integrated S/PDIF transceiver and 8 SPORTs directly interface to HDMI audio extractors, DACs, and ADCs; mask-ROM stores certified room correction algorithms without external flash dependency.	Use Scenario: 32-in/32-out Thunderbolt/USB audio interface with near-zero-latency monitoring, hardware-accelerated reverb, and analog-to-digital conversion control. IC Role / Device Role / Timing Role: Real-time audio coprocessor offloading host CPU for sample-accurate I/O buffering, ASRC resampling, and plugin processing (e.g., convolution reverb). Use Value: 16 PWM outputs drive precision analog gain stages; 4 ASRC channels convert between USB audio (48 kHz), ADAT (44.1 kHz), and internal processing clock (192 kHz) with <1 ppm jitter.

Automotive Infotainment Head Unit

Professional Digital Mixing Console

Use Scenario: Real-time audio processing in vehicle head units with multiple input sources (Bluetooth, USB, tuner, CAN-linked mic), multi-zone output, and active noise cancellation.

IC Role / Device Role / Timing Role: Primary audio DSP executing FIR-based acoustic echo cancellation, parametric EQ, dynamic range compression, and ASRC for mixed-sample-rate inputs.

Use Value: On-chip 2 Mbit SRAM stores all filter coefficients and state variables; 4 ASRC channels synchronize Bluetooth (44.1 kHz), tuner (48 kHz), and mic (16 kHz) streams without external clock domain crossing logic.

Use Scenario: High-channel-count digital mixer handling 64+ inputs with real-time effects (reverb, pitch shift), monitor mixing, and Dante/AES67 network streaming.

IC Role / Device Role / Timing Role: Core processing engine managing low-latency I/O via 8 SPORTs and S/PDIF, running parallel DSP threads across PEx/PEy for concurrent effect chains.

Use Value: Dual 400 MHz PEs deliver deterministic sub-100 μs latency for 1024-point FFT-based spectrum analysis and 128-channel FIR filtering - meeting broadcast-grade timing requirements.

High-End Home Theater AV Receiver

Studio-Grade Audio Interface

Use Scenario: 11.2-channel surround sound processing with object-based audio (Dolby Atmos, DTS:X), room correction, and multi-room streaming.

IC Role / Device Role / Timing Role: Main DSP handling Dirac Live or Audyssey MultEQ calibration, upmixing, bass management, and HDMI ARC passthrough with lip-sync compensation.

Use Value: Integrated S/PDIF transceiver and 8 SPORTs directly interface to HDMI audio extractors, DACs, and ADCs; mask-ROM stores certified room correction algorithms without external flash dependency.

Use Scenario: 32-in/32-out Thunderbolt/USB audio interface with near-zero-latency monitoring, hardware-accelerated reverb, and analog-to-digital conversion control.

IC Role / Device Role / Timing Role: Real-time audio coprocessor offloading host CPU for sample-accurate I/O buffering, ASRC resampling, and plugin processing (e.g., convolution reverb).

Use Value: 16 PWM outputs drive precision analog gain stages; 4 ASRC channels convert between USB audio (48 kHz), ADAT (44.1 kHz), and internal processing clock (192 kHz) with <1 ppm jitter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADSP-21364KSWZ-3A	333 MHz core, 1.5 Mbits SRAM, no S/PDIF, 2 ASRC channels	Limited to cost-sensitive automotive audio without digital optical I/O or high-channel ASRC needs	Select when lower power and reduced peripheral count suffice for entry-level head units.
ADSP-21369KSWZ-3A	Same silicon, 333 MHz rated speed grade (vs. 400 MHz for -2A), identical feature set	Valid for same applications but with derated timing margins and lower sustained GFLOPS	Choose for thermal-constrained designs where 400 MHz operation cannot be guaranteed across temperature/voltage.

Compared with ADSP-21369KSWZ-2A, the -3A variant offers identical functionality at 333 MHz for relaxed thermal design, while the ADSP-21364KSWZ-3A omits S/PDIF and half the ASRC capability - making it suitable only for simpler audio topologies without optical interconnect or multi-domain sample rate conversion.

Availability

ADSP-21369KSWZ-2A is available at Aetrix Electronics and suitable for automotive infotainment, professional audio mixing, home theater AV receivers, and studio audio interfaces requiring stable component supply and long-term industrial lifecycle support.

Supply support for ADSP-21369KSWZ-2A 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 instrumentation, industrial automation, and audio systems.

The SHARC® processor product line was designed specifically for computationally intensive, low-latency audio and sensor signal processing - emphasizing on-chip memory bandwidth, deterministic real-time I/O, and hardware-accelerated math functions.

FAQ

What is the maximum operating frequency of the ADSP-21369KSWZ-2A?

The ADSP-21369KSWZ-2A is rated for 400 MHz core operation, delivering a 2.5 ns instruction cycle time and 2.4 GFLOPS peak performance. This speed grade is validated across commercial temperature range (0°C to 70°C) and specified in Analog Devices' Rev. H datasheet under Electrical Characteristics and Timing Specifications sections.

Does the ADSP-21369KSWZ-2A support S/PDIF digital audio I/O?

Yes, the ADSP-21369KSWZ-2A includes an integrated S/PDIF transceiver compliant with IEC-60958, capable of biphase encoding/decoding for both transmission and reception. It accepts left-justified, I2S, or right-justified serial data with 16–24 bit word widths and routes signals through the DAI signal routing unit (SRU) for flexible pin assignment.

How many asynchronous sample rate converters (ASRC) does the ADSP-21369KSWZ-2A have?

The ADSP-21369KSWZ-2A integrates four independent asynchronous sample rate converters (ASRC), each supporting 128 dB SNR and programmable input/output sampling rates. These enable simultaneous bridging of multiple audio domains - for example, synchronizing Bluetooth (44.1 kHz), USB audio (48 kHz), and internal processing clocks (192 kHz) - without external ASRC ICs.

What package type is used for the ADSP-21369KSWZ-2A?

The ADSP-21369KSWZ-2A is supplied in a 256-ball BGA_ED package (17 mm × 17 mm, 1.0 mm ball pitch) with exposed thermal pad. This package is documented in the Rev. H datasheet on Page 53 and supports high-density PCB layouts and thermal management required for sustained 400 MHz operation in audio processing applications.

Is the ADSP-21369KSWZ-2A pin-compatible with other SHARC processors?

No, the ADSP-21369KSWZ-2A is not pin-compatible with earlier SHARC families such as ADSP-2126x or ADSP-2116x. Its 256-ball BGA_ED footprint and signal allocation (e.g., DAI_P0–P23, ASRC_CLKIN0–3) are unique to the ADSP-21369 series. Migration requires board redesign, though source code compatibility is maintained across the SHARC family.

ADSP-21369KSWZ-2A Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: SHARC®

Package/Case:: 208-LQFP Exposed Pad

Packaging:: Tray

Product Status:: Active

Type:: Floating Point

Interface:: DAI, DPI

Clock Rate:: 333MHz

Non-Volatile Memory:: ROM (768kB)

On-Chip RAM:: 256kB

Voltage - I/O:: 3.30V

Voltage - Core:: 1.20V

Operating Temperature:: 0°C ~ 70°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 208-LQFP-EP (28x28)

ADSP-21369KSWZ-2A FAQ

1.How can I place an order for ADSP-21369KSWZ-2A through Aetrix?

Please submit a Request for Quotation (RFQ) for ADSP-21369KSWZ-2A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ADSP-21369KSWZ-2A reliable?

The price and inventory of ADSP-21369KSWZ-2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21369KSWZ-2A is usually 5 days.

3.What payment methods are accepted for ADSP-21369KSWZ-2A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21369KSWZ-2A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADSP-21369KSWZ-2A?

ADSP-21369KSWZ-2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADSP-21369KSWZ-2A order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ADSP-21369KSWZ-2A?

For technical support, including ADSP-21369KSWZ-2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21369KSWZ-2A requirements.

6.How does Aetrix verify that ADSP-21369KSWZ-2A is sourced from the original manufacturer or authorized distributors?

All ADSP-21369KSWZ-2A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADSP-21369KSWZ-2A meets industry standards.

7.What is the process for return or replacement of ADSP-21369KSWZ-2A?

All ADSP-21369KSWZ-2A units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21369KSWZ-2A, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ADSP-21369KSWZ-2A part is unused and in its original packaging.

Return procedure for ADSP-21369KSWZ-2A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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