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

Analog Devices Inc. ADSP-21266SKSTZ-1D

Name: ADSP-21266SKSTZ-1D
Brand: Analog Devices Inc.
SKU: ADSP-21266SKSTZ-1D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADSP-21266SKSTZ-1D

Manufacturer:: Analog Devices Inc.

Category:: DSP (Digital Signal Processors)

Package:: 144-LQFP

Datasheet:: ADSP-21266SKSTZ-1D.pdf

Description:: IC DSP 32BIT 150MHZ 144-LQFP

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Product details

Overview

ADSP-21266SKSTZ-1D from Analog Devices is a 32-bit/40-bit floating-point SHARC DSP optimized for multichannel audio decoding and real-time signal processing, featuring 200 MHz core instruction rate, 2 Mbit dual-ported SRAM, 4 Mbit mask-programmable ROM with preloaded Dolby Digital, DTS, and WMA-PRO decoders, and six full-duplex serial ports for high-bandwidth audio I/O in home theater AV receivers.

For engineers reviewing the ADSP-21266SKSTZ-1D datasheet, ADSP-21266SKSTZ-1D pinout, ADSP-21266SKSTZ-1D application, or ADSP-21266SKSTZ-1D equivalent, key selection criteria include SIMD computational throughput (1200 MFLOPS), ROM-based decoder availability (e.g., DTS-ES Matrix 6.1, Dolby Pro Logic IIx), dual-ported memory architecture, JTAG-emulatable 136-ball BGA package, and digital audio interface (DAI) with two precision clock generators and flexible signal routing unit (SRU).

Technical Context

The ADSP-21266SKSTZ-1D implements a dual-processing-element SIMD architecture (PEX and PEY), each with independent ALU, multiplier, shifter, and 32-register file, enabling parallel execution of identical instructions on distinct data streams-critical for FIR/IIR filtering and FFT acceleration in audio postprocessing pipelines. Its enhanced Harvard architecture supports simultaneous fetch of one 48-bit instruction and four 32-bit operands per cycle via separate PM/DM buses and instruction cache.

It integrates a digital application interface (DAI) with two programmable precision clock generators (PCGs), eight-channel input data port (IDP), six flag I/Os, three timers, and software-configurable signal routing unit (SRU), allowing dynamic interconnection of serial ports, PCGs, and IDP without hardware redesign-enabling flexible TDM, I2S, or left-justified audio routing in multichannel systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Instruction Rate	200 MHz - enables 1200 MFLOPS SIMD performance for real-time 96 kHz PCM and Dolby Digital Surround EX decoding
On-Chip Memory	2 Mbit dual-ported SRAM + 4 Mbit mask-programmable ROM - supports concurrent core and I/O processor access; ROM contains certified audio decoders including WMA-PRO V7.1 and DTS Neo:6
Serial Ports	6 full-duplex SPORTs - deliver up to 24 audio channels (TDM mode) or 6 stereo I2S links at ≤50 Mbps per port, with per-channel μ-law/A-law companding
Digital Audio Interface	DAI with 2 PCGs, IDP, SRU, and 6 flag I/Os - allows runtime reconfiguration of clock/data routing between peripherals without PCB changes
Power Supply	VDDINT = 1.2 V, VDDEXT = 3.3 V, AVDD = 1.2 V - AVDD powers PLL; requires dedicated analog filter (e.g., Murata BLM18AG102SN1D) for low-jitter clock generation
Package	136-ball BGA (12 mm × 12 mm, 0.8 mm pitch) - matches ADSP-21262/21266 footprint; RoHS-compliant, lead-free, thermally enhanced for sustained 200 MHz operation
JTAG Support	IEEE 1149.1 compliant - enables full-speed emulation, register/memory inspection, and secure boot key programming via 64-bit JTAG scan

Pinout & Package

ADSP-21266SKSTZ-1D is housed in a 136-ball fine-pitch BGA (12 mm × 12 mm, 0.8 mm ball pitch), thermally optimized for high-density audio processing modules. The package supports standard reflow profiles and includes dedicated AVDD/AVSS pins requiring local analog filtering per Analog Devices' recommended circuit (Murata BLM18AG102SN1D + 1nF/10nF/100nF decoupling).

Pin/Terminal	Circuit Role	Design Meaning
CLKIN	External reference clock input	Accepts 12.288–50 MHz crystal or oscillator; feeds on-chip PLL to generate 200 MHz core clock (16:1, 8:1, or 3:1 ratio selectable at boot)
VDDEXT, VDDINT, AVDD	Power supply inputs	VDDEXT (3.3 V) powers I/O; VDDINT (1.2 V) powers core logic; AVDD (1.2 V) powers PLL-must be filtered independently to minimize jitter
SPORT0–SPORT5	Synchronous serial port I/O	Each provides Tx/Rx pair, clock, and frame sync; supports I2S, TDM, left-justified, and custom protocols; DMA-mapped for zero-overhead audio streaming
DAI_P0–DAI_P20	Digital application interface pins	Configurable as IDP inputs, PCG outputs, flag I/Os, or timer signals via SRU; enable dynamic routing of audio clocks/data without fixed hardware paths
TCK/TMS/TDO/TDI/TRST	JTAG test access port	Supports IEEE 1149.1 boundary scan, full-speed emulation, and secure 64-bit key authentication for ROM-locked boot mode

Key Features

Feature	Design Value
ROM-based audio decoder suite	Preprogrammed DTS-ES Discrete 6.1, Dolby Pro Logic IIx, WMA-PRO V7.1, and MPEG2 AAC LC eliminate external codec ICs and reduce BOM cost in AV receivers
Dual-ported memory architecture	2 Mbit SRAM + 4 Mbit ROM with independent PM/DM bus access enables simultaneous core computation and DMA-driven I/O-no memory contention during real-time audio buffering
Signal Routing Unit (SRU)	Software-configurable matrix connects DAI peripherals (PCGs, IDP, timers, flags); replaces fixed interconnects with runtime-reconfigurable signal paths for multi-standard audio support
SIMD computational engine	PEX + PEY execute identical instructions on separate data-doubles FIR filter throughput and accelerates 1024-point FFT to 61.3 µs at 200 MHz
Secure boot with JTAG key lock	64-bit customer-specific key required to enable emulation or external boot; prevents unauthorized firmware extraction from ROM-secured applications

Applications

Home Theater AV Receiver	Professional Audio Mixer
Use Scenario: Real-time decoding of Dolby Digital, DTS, and WMA-PRO bitstreams while applying room correction and speaker management algorithms. IC Role / Device Role / Timing Role: Primary audio processor executing ROM-resident decoders and user-loaded DSP kernels; synchronizes all audio paths via dual PCGs and SRU-routed clocks. Use Value: Eliminates need for discrete decoder ICs and external RAM, reducing system latency to <50 µs and enabling 96 kHz/24-bit multichannel playback with sub-10 ppm clock accuracy.	Use Scenario: Low-latency mixing of 32+ analog input channels with real-time effects (reverb, EQ, dynamics) and AES/EBU output formatting. IC Role / Device Role / Timing Role: Central signal processor handling sample-rate conversion, channel routing, and effect computation; uses six SPORTs for simultaneous I/O with independent DMA channels. Use Value: Achieves <128-sample processing latency at 48 kHz using SIMD-optimized FIR filters and dual-ported memory-critical for live monitoring with zero audible delay.
Automotive Infotainment Head Unit	Digital Soundbar Processor
Use Scenario: Concurrent decoding of Bluetooth A2DP, USB audio, and AM/FM tuner streams with 3D virtual surround synthesis and voice assistant integration. IC Role / Device Role / Timing Role: Multistream audio hub managing time-aligned playback, ASRC, and acoustic echo cancellation; leverages IDP for parallel acquisition of microphone arrays. Use Value: Supports 6+ independent audio sources with seamless crossfading and <2 ms inter-channel skew-ensuring synchronized lip-sync and spatial audio rendering.	Use Scenario: Compact form-factor soundbar performing upmixing (stereo-to-5.1), bass management, and adaptive room compensation without external memory. IC Role / Device Role / Timing Role: Standalone audio SoC running from internal ROM/SRAM; uses DAI's PCGs to drive multiple DACs with phase-coherent clocks. Use Value: Enables full 5.1 decoding and rendering in <50 mm depth enclosure by integrating decoders, DSP, and clock generation-no external timing ICs required.

Home Theater AV Receiver

Professional Audio Mixer

Use Scenario: Real-time decoding of Dolby Digital, DTS, and WMA-PRO bitstreams while applying room correction and speaker management algorithms.

IC Role / Device Role / Timing Role: Primary audio processor executing ROM-resident decoders and user-loaded DSP kernels; synchronizes all audio paths via dual PCGs and SRU-routed clocks.

Use Value: Eliminates need for discrete decoder ICs and external RAM, reducing system latency to <50 µs and enabling 96 kHz/24-bit multichannel playback with sub-10 ppm clock accuracy.

Use Scenario: Low-latency mixing of 32+ analog input channels with real-time effects (reverb, EQ, dynamics) and AES/EBU output formatting.

IC Role / Device Role / Timing Role: Central signal processor handling sample-rate conversion, channel routing, and effect computation; uses six SPORTs for simultaneous I/O with independent DMA channels.

Use Value: Achieves <128-sample processing latency at 48 kHz using SIMD-optimized FIR filters and dual-ported memory-critical for live monitoring with zero audible delay.

Automotive Infotainment Head Unit

Digital Soundbar Processor

Use Scenario: Concurrent decoding of Bluetooth A2DP, USB audio, and AM/FM tuner streams with 3D virtual surround synthesis and voice assistant integration.

IC Role / Device Role / Timing Role: Multistream audio hub managing time-aligned playback, ASRC, and acoustic echo cancellation; leverages IDP for parallel acquisition of microphone arrays.

Use Value: Supports 6+ independent audio sources with seamless crossfading and <2 ms inter-channel skew-ensuring synchronized lip-sync and spatial audio rendering.

Use Scenario: Compact form-factor soundbar performing upmixing (stereo-to-5.1), bass management, and adaptive room compensation without external memory.

IC Role / Device Role / Timing Role: Standalone audio SoC running from internal ROM/SRAM; uses DAI's PCGs to drive multiple DACs with phase-coherent clocks.

Use Value: Enables full 5.1 decoding and rendering in <50 mm depth enclosure by integrating decoders, DSP, and clock generation-no external timing ICs required.

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-21262SKSTZ-1D	Same 136-ball BGA package and 200 MHz speed, but contains only 3 Mbit ROM (no WMA-PRO V7.1 or DTS-ES Matrix 6.1 decoders); 1 Mbit less SRAM than ADSP-21266	Limited to basic Dolby Digital and DTS 5.1 decoding; insufficient for premium-tier soundbars requiring WMA-PRO or Neo:6 support	Select when cost-sensitive designs omit advanced audio codecs and require identical pinout and thermal profile
ADSP-21369BBCZ-2A	Successor SHARC with 450 MHz core, 2.5 MB L1 SRAM, and expanded DAI (12 PCGs, 16 IDP channels); incompatible BGA (196-ball) and non-pin-compatible	Enables AI-accelerated audio features (voice recognition, noise suppression) and higher channel counts (>16 in/out), but requires PCB redesign	Choose for next-generation platforms needing >2× computational headroom and future-proofing beyond legacy decoder requirements

Compared with ADSP-21262SKSTZ-1D, the ADSP-21266SKSTZ-1D delivers full premium decoder support in the same footprint; versus ADSP-21369BBCZ-2A, it offers proven, lower-risk deployment for established audio architectures without layout changes.

Availability

ADSP-21266SKSTZ-1D is available at Aetrix Electronics and suitable for home theater AV receivers, professional audio mixers, automotive infotainment head units, and digital soundbar processors requiring stable component supply, long-term lifecycle assurance, and qualified industrial temperature-grade availability.

Supply support for ADSP-21266SKSTZ-1D 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and over 50 years of signal chain innovation.

The ADSP-21266SKSTZ-1D belongs to Analog Devices' SHARC® family of SIMD-capable floating-point DSPs, engineered specifically for deterministic, low-latency audio processing in consumer and professional audio equipment where computational density and ROM-based algorithm certification are critical.

FAQ

What audio decoder algorithms are factory-programmed into the ROM of the ADSP-21266SKSTZ-1D?

The ADSP-21266SKSTZ-1D includes factory-masked ROM containing Dolby Digital, Dolby Digital Surround EX, DTS-ES Discrete 6.1, DTS-ES Matrix 6.1, DTS 96/24 5.1, MPEG2 AAC LC, MPEG2 BC 2ch, WMA-PRO V7.1, Dolby Pro Logic II, Dolby Pro Logic IIx, and DTS Neo:6 decoders. These are verified, production-certified implementations that execute directly from ROM without external code loading.

Does the ADSP-21266SKSTZ-1D support secure boot and firmware protection?

Yes, the ADSP-21266SKSTZ-1D implements ROM-based security: when enabled, it boots exclusively from internal memory and disables external code loading and unrestricted JTAG access. A unique 64-bit key must be scanned via JTAG before emulation or debug features become available-preventing unauthorized firmware extraction or modification.

What is the maximum data rate supported by each serial port (SPORT) on the ADSP-21266SKSTZ-1D?

Each of the six full-duplex serial ports on the ADSP-21266SKSTZ-1D operates at up to one-quarter of the core clock rate. At the rated 200 MHz core frequency, this delivers a maximum data rate of 50 Mbps per SPORT, supporting high-channel-count TDM frames (e.g., 128-channel frames) or multiple stereo I2S links simultaneously.

Can the ADSP-21266SKSTZ-1D operate without external memory, relying solely on on-chip resources?

Yes, the ADSP-21266SKSTZ-1D can run entirely from its 2 Mbit dual-ported SRAM and 4 Mbit mask-programmable ROM. Its ROM contains certified audio decoders, and SRAM accommodates user code and data buffers-enabling fully self-contained operation in space-constrained applications like soundbars or portable AV devices.

How does the Signal Routing Unit (SRU) enhance system flexibility in designs using the ADSP-21266SKSTZ-1D?

The SRU in the ADSP-21266SKSTZ-1D is a software-configurable matrix that dynamically routes signals between DAI peripherals-including precision clock generators (PCGs), input data port (IDP), timers, and flag I/Os. This eliminates fixed hardware interconnects, allowing runtime reconfiguration of audio clock/data paths for multi-standard support (e.g., switching between I2S and TDM) without PCB changes.

ADSP-21266SKSTZ-1D Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: SHARC®

Package/Case:: 144-LQFP

Packaging:: Tray

Product Status:: Obsolete

Type:: Floating Point

Interface:: DAI, SPI

Clock Rate:: 150MHz

Non-Volatile Memory:: ROM (512kB)

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:: 144-LQFP (20x20)

ADSP-21266SKSTZ-1D FAQ

1.How can I place an order for ADSP-21266SKSTZ-1D through Aetrix?

Please submit a Request for Quotation (RFQ) for ADSP-21266SKSTZ-1D 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-21266SKSTZ-1D reliable?

The price and inventory of ADSP-21266SKSTZ-1D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21266SKSTZ-1D is usually 5 days.

3.What payment methods are accepted for ADSP-21266SKSTZ-1D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21266SKSTZ-1D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADSP-21266SKSTZ-1D?

ADSP-21266SKSTZ-1D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADSP-21266SKSTZ-1D 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-21266SKSTZ-1D?

For technical support, including ADSP-21266SKSTZ-1D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21266SKSTZ-1D requirements.

6.How does Aetrix verify that ADSP-21266SKSTZ-1D is sourced from the original manufacturer or authorized distributors?

All ADSP-21266SKSTZ-1D 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-21266SKSTZ-1D meets industry standards.

7.What is the process for return or replacement of ADSP-21266SKSTZ-1D?

All ADSP-21266SKSTZ-1D units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21266SKSTZ-1D, 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-21266SKSTZ-1D part is unused and in its original packaging.

Return procedure for ADSP-21266SKSTZ-1D:

1.Submit a request within 90 days.

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

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