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Analog Devices Inc. ADSP-2187NBSTZ-320
- Part No.:
- ADSP-2187NBSTZ-320
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2187NBSTZ-320.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2187NBSTZ-320 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time signal processing in embedded audio, telecom, and industrial control systems. It delivers 80 MIPS sustained performance at 12.5 ns instruction cycle time (1.8 V core), features 32K words of on-chip program RAM and 32K words of data RAM, and integrates dual serial ports with hardware companding per CCITT G.711.
For engineers reviewing the ADSP-2187NBSTZ-320 datasheet, ADSP-2187NBSTZ-320 pinout, ADSP-2187NBSTZ-320 application, or ADSP-2187NBSTZ-320 equivalent, key selection criteria include on-chip memory configuration (32K/32K), LQFP-100 package compatibility, 16-bit internal DMA port support, power-down recovery within 200 CLKIN cycles, and SPORT0 multichannel TDM capability for voice channel aggregation.
Technical Context
The ADSP-2187NBSTZ-320 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, shifter), two dedicated data address generators (DAG1/DAG2), and a zero-overhead program sequencer supporting conditional jumps and subroutine calls in one cycle. Its 3-bus Harvard architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - in every instruction cycle.
It supports flexible system interfacing via 16-bit internal DMA port (IDMA), byte-wide DMA (BDMA) for 4 MB external memory access, programmable wait states, and glueless I/O memory space with separate strobe control. Boot modes include BDMA auto-load from byte memory or IDMA host-initiated loading, both requiring hold-off until completion before execution begins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 12.5 ns @ 1.8 V core - enables 80 MIPS sustained throughput without pipeline stalls |
| On-Chip Program Memory | 32K words × 24-bit - stores full application code and constants without external fetch latency |
| On-Chip Data Memory | 32K words × 16-bit - supports large coefficient buffers and real-time sample arrays |
| Serial Ports | Two double-buffered SPORTs - each supports frame-synced, 3–16 bit word lengths and A-law/μ-law companding |
| Power-Down Recovery | 200 CLKIN cycles - allows rapid wake-up for burst-mode signal acquisition |
| Package | 100-lead LQFP (BSTZ) - surface-mount compatible with standard PCB reflow profiles |
| Supply Voltage | 1.8 V core / 3.3 V I/O - enables low-power operation while interfacing to legacy 3.3 V peripherals |
Pinout & Package
ADSP-2187NBSTZ-320 is housed in a 100-lead Low-Profile Quad Flat Package (LQFP) with 0.5 mm pitch, thermally enhanced for sustained DSP workloads. Pin functions are defined across five functional groups: memory interface (PMA/PMD/DMA/DMD buses), serial I/O (SPORT0/SPORT1 signals), programmable flags (PF0–PF7), system control (RESET, PWD, PWDACK, CLKIN, XTAL), and DMA ports (IDMA/BDMA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Master clock input | Accepts 40 MHz TTL-compatible signal or crystal oscillator reference; drives internal 80 MHz instruction clock |
| PWD | Power-down control | Active-low hardware trigger to enter ultra-low-power dormant state with 200-cycle wake-up guarantee |
| PWDACK | Power-down status indicator | Asserted low when processor enters power-down - used for system-level power sequencing coordination |
| SPORT0_TFS | Transmit frame sync output | Generates active-high frame synchronization pulse for TDM slot alignment in voice/data multiplexing |
| SPORT1_DR | Receive data input | Double-buffered serial input supporting μ-law decompression and automatic buffer wrap for continuous streaming |
| IDMA_D0–D15 | Internal DMA data bus | 16-bit bidirectional bus enabling transparent, high-speed access to on-chip RAM without CPU intervention |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle instruction execution | Every instruction completes in one 12.5 ns cycle - eliminates pipeline bubbles for deterministic real-time response |
| Dual serial ports with hardware companding | SPORT0/SPORT1 implement CCITT G.711 A-law/μ-law in silicon - offloads CPU from software-based compression/decompression |
| Zero-overhead looping | Hardware loop counters and stack eliminate branch instructions in inner loops - critical for FIR/IIR filter kernels |
| Programmable interval timer | 16-bit TCOUNT with 8-bit TSCALE prescaler - generates precise periodic interrupts for sample rate timing or watchdog events |
| Flexible boot modes | BDMA auto-load or IDMA host-initiated loading - enables field-upgradable firmware without external ROM dependency |
Applications
| Voice Communications Gateway | Digital Audio Processing |
|---|---|
Use Scenario: Aggregating 24-channel TDM voice streams from PSTN interfaces into VoIP packetized payloads. IC Role / Device Role / Timing Role: Primary DSP executing echo cancellation, DTMF detection, and G.711 codec in real time using SPORT0 multichannel mode. Use Value: On-chip 32K/32K RAM eliminates external memory bottlenecks; hardware companding reduces CPU load by >40% versus software-only implementation. | Use Scenario: Real-time equalization, dynamic range compression, and speaker protection in professional audio amplifiers. IC Role / Device Role / Timing Role: Fixed-point signal processor performing 256-tap FIR filtering at 48 kHz with sub-microsecond latency. Use Value: 80 MIPS throughput ensures headroom for multi-band processing; dual SPORTs enable simultaneous analog-to-digital and digital-to-analog streaming. |
| Industrial Motor Control | Medical Signal Acquisition |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase BLDC motors with current/voltage sensing and PWM generation. IC Role / Device Role / Timing Role: Real-time controller executing Clarke/Park transforms, PI regulators, and space-vector modulation at 20 kHz switching frequency. Use Value: Dedicated ALU/MAC/shifter units allow concurrent math operations; programmable timer synchronizes ADC sampling with PWM edges. | Use Scenario: Portable ECG monitor acquiring and preprocessing biopotential signals with noise rejection and QRS detection. IC Role / Device Role / Timing Role: Low-power DSP handling adaptive filtering, baseline wander correction, and R-peak identification in battery-operated devices. Use Value: Power-down mode draws <100 µA standby current; 200-cycle wake-up supports event-driven acquisition without continuous polling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2188NBSTZ-320 | 48K words program RAM / 56K words data RAM - +50% memory capacity vs. ADSP-2187NBSTZ-320 | Supports larger algorithm footprints (e.g., wideband acoustic echo cancellation, multi-channel audio effects) | Select when application requires >32K words of program or data storage without external memory expansion |
| TMS320VC5402PGE100 | 100 MHz CPU, 16K × 16-bit RAM, 32K × 16-bit ROM - different architecture (TI C54x), no hardware companding | Lacks integrated G.711 support; requires external codec or software implementation for voice applications | Choose for TI toolchain ecosystems or where ROM-based boot and lower cost outweigh companding requirement |
Compared with ADSP-2187NBSTZ-320, ADSP-2188NBSTZ-320 offers greater on-chip memory for complex algorithms but shares identical pinout and instruction set; TMS320VC5402PGE100 provides higher clock speed but lacks hardware voice codec acceleration and requires additional components for telephony-grade signal processing.
Availability
ADSP-2187NBSTZ-320 is available at Aetrix Electronics and suitable for voice communications gateways, digital audio processors, and industrial motor controllers requiring stable component supply across long-lifecycle production programs.
Supply support for ADSP-2187NBSTZ-320 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.
The ADSP-218xN series was designed as a low-power, code-compatible evolution of the ADSP-2100 family, targeting embedded real-time signal processing in battery-powered and thermally constrained environments.
FAQ
What is the maximum operating frequency and instruction throughput of the ADSP-2187NBSTZ-320?
The ADSP-2187NBSTZ-320 operates with a 12.5 ns instruction cycle time, delivering 80 million instructions per second (MIPS) sustained performance. This is achieved at 1.8 V core voltage with an external 40 MHz clock applied to CLKIN, which the internal circuitry doubles to generate the 80 MHz instruction clock. All instructions execute in a single cycle, including arithmetic, memory access, and branching operations, ensuring deterministic real-time behavior critical for audio and control applications.
Does the ADSP-2187NBSTZ-320 support hardware-based audio compression standards?
Yes, the ADSP-2187NBSTZ-320 includes dedicated hardware companding logic in both serial ports (SPORT0 and SPORT1) compliant with CCITT Recommendation G.711 for A-law and μ-law encoding/decoding. This offloads the CPU from performing computationally intensive logarithmic compression in software, reducing processing overhead by over 40% in voice codec implementations and enabling simultaneous multi-channel operation without compromising real-time deadlines.
How does the ADSP-2187NBSTZ-320 manage power consumption in portable applications?
The ADSP-2187NBSTZ-320 supports three low-power modes: Power-Down (sub-100 µA standby), Idle (clock-gated, interrupt-wakeup), and Slow Idle (programmable clock divisor of 16/32/64/128). Power-Down mode guarantees recovery in exactly 200 CLKIN cycles, making it ideal for event-driven acquisition in battery-powered ECG monitors or voice-activated devices. The 1.8 V core supply further minimizes dynamic power dissipation during active computation.
What memory configurations are available on the ADSP-2187NBSTZ-320?
The ADSP-2187NBSTZ-320 integrates 32K words of on-chip program RAM (24-bit wide) and 32K words of on-chip data RAM (16-bit wide), fully configurable for instruction and data storage. Unlike earlier ADSP-218xN variants, this specific part does not include mask-ROM or flash; all program memory is SRAM-based and volatile, requiring boot from external byte memory (e.g., EPROM) or host-loaded via the 16-bit internal DMA port during initialization.
Is the ADSP-2187NBSTZ-320 pin-compatible with other members of the ADSP-218xN family?
Yes, all ADSP-218xN series devices - including ADSP-2184N, ADSP-2185N, ADSP-2186N, ADSP-2187N, ADSP-2188N, and ADSP-2189N - are fully pin-compatible in both 100-lead LQFP and 144-ball BGA packages. The ADSP-2187NBSTZ-320 uses the LQFP-100 variant (BSTZ suffix) and shares identical pin assignments, electrical characteristics, and timing specifications with other family members, enabling drop-in memory-scaling upgrades without PCB redesign.
ADSP-2187NBSTZ-320 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 80MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 160kB
- Voltage - I/O:
- 1.8V, 2.5V, 3.3V
- Voltage - Core:
- 1.90V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2187NBSTZ-320 FAQ
1.How can I place an order for ADSP-2187NBSTZ-320 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2187NBSTZ-320 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-2187NBSTZ-320 reliable?
The price and inventory of ADSP-2187NBSTZ-320 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2187NBSTZ-320 is usually 5 days.
3.What payment methods are accepted for ADSP-2187NBSTZ-320?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2187NBSTZ-320 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2187NBSTZ-320?
ADSP-2187NBSTZ-320 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2187NBSTZ-320 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-2187NBSTZ-320?
For technical support, including ADSP-2187NBSTZ-320 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2187NBSTZ-320 requirements.
6.How does Aetrix verify that ADSP-2187NBSTZ-320 is sourced from the original manufacturer or authorized distributors?
All ADSP-2187NBSTZ-320 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-2187NBSTZ-320 meets industry standards.
7.What is the process for return or replacement of ADSP-2187NBSTZ-320?
All ADSP-2187NBSTZ-320 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2187NBSTZ-320, 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-2187NBSTZ-320 part is unused and in its original packaging.
Return procedure for ADSP-2187NBSTZ-320:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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