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Analog Devices Inc. ADSP-2185LKCA-210
- Part No.:
- ADSP-2185LKCA-210
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2185LKCA-210.pdf
- Description:
- DSP MICROCOMPUTER, 16 BIT
- Quantity:
- Payment:
- Shipping:
Inventory:770
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Product details
Overview
ADSP-2185LKCA-210 from Analog Devices is a 16-bit fixed-point DSP microcomputer optimized for real-time signal processing in embedded systems. It delivers 52 MIPS sustained performance at 19 ns instruction cycle time, integrates 16K words (24-bit) program RAM and 16K words (16-bit) data RAM, and features dual serial ports with hardware companding for voice/data communications.
For engineers reviewing the ADSP-2185LKCA-210 datasheet, ADSP-2185LKCA-210 pinout, ADSP-2185LKCA-210 application, or ADSP-2185LKCA-210 equivalent, key selection criteria include on-chip memory configuration, 100-lead LQFP package compatibility, power-down recovery timing, SPORT framing flexibility, and IDMA/BDMA interface mode support.
Technical Context
The ADSP-2185LKCA-210 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 nested loops. Its 3-bus architecture enables simultaneous dual operand fetches per instruction cycle.
It supports full memory mode and host mode via Mode A–C pins, provides 6 external interrupts (including IRQ0–IRQ2, IRQL0/IRQL1, IRQE), and integrates programmable 16-bit interval timer with prescaler. Serial ports SPORT0 and SPORT1 operate with independent framing, 3–16-bit word lengths, and CCITT G.711 A-law/μ-law companding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 19 ns - enables 52 MIPS sustained throughput for real-time FIR/IIR filtering and FFT execution. |
| Program Memory | 16K words × 24-bit SRAM - stores both instructions and data, enabling dual-operand fetch per cycle. |
| Data Memory | 16K words × 16-bit SRAM - supports circular buffering and fast coefficient/data access for DSP kernels. |
| Serial Ports | 2 × bidirectional SPORTs - each with double-buffered TX/RX, hardware companding, and frame sync flexibility. |
| Power-Down Recovery | 400 CLKIN cycles - allows rapid wake-up from ultra-low-power state without external reset sequencing. |
| Package | 100-lead LQFP (14 mm × 14 mm) - surface-mount compatible with standard PCB assembly processes. |
| Operating Voltage | 3.3 V ± 0.3 V - single-supply operation compatible with modern low-voltage logic interfaces. |
| External Memory Interface | 4 MB byte-addressable space via BDMA port - supports EPROM boot and off-chip program overlays. |
Pinout & Package
ADSP-2185LKCA-210 is housed in a 100-lead LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per Analog Devices Rev. C datasheet, Pages 44–45.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Master clock input | Accepts 40 MHz TTL-compatible signal or crystal; drives internal 52.63 MHz instruction clock (19 ns cycle). |
| PWD | Power-down control | Active-low hardware entry to low-power dormant state; supports software-triggered or external wake-up. |
| SPORT0 (DT0, DR0, TFS0, RFS0, SCLK0) | Synchronous serial interface | Full-duplex 3–16-bit data transfer with programmable frame sync polarity and pulse width. |
| SPORT1 (DT1, DR1, TFS1, RFS1, SCLK1) | Secondary serial interface | Configurable as serial port or alternate flag I/O (FI/FO) and external interrupts (IRQ0/IRQ1). |
| IDMA[15:0], IAD[15:0] | Internal DMA port | 16-bit multiplexed address/data bus for high-speed transparent access to on-chip RAM in Host Mode. |
| PF0–PF7 | Programmable flag I/O | 13 total flags (8 bidirectional + 3 output-only); used for system signaling, interrupt generation, or peripheral handshaking. |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle instruction execution | Enables deterministic real-time response for audio echo cancellation and motor control loops. |
| Dual-operand fetch per cycle | Supports simultaneous coefficient load and sample fetch in FIR filter implementations. |
| Hardware companding (A-law/μ-law) | Eliminates need for external codec in telephony and VoIP endpoint designs. |
| Zero-overhead looping | Removes branch penalty in FFT butterfly and convolution routines, improving MIPS efficiency. |
| 400-cycle power-down recovery | Permits burst-mode operation in battery-powered speech recorders with sub-100 μs wake latency. |
| ICE-Port emulator interface | Enables non-intrusive debugging and real-time trace in deployed systems without JTAG overhead. |
Applications
| Voice Communications Terminal | Industrial Motor Control |
|---|---|
Use Scenario: Embedded VoIP gateway handling concurrent G.711-encoded voice streams with echo cancellation. IC Role / Device Role / Timing Role: Primary DSP executing adaptive filtering, packetization, and hardware-accelerated companding. Use Value: On-chip 16K×24-bit program RAM stores dual-channel echo canceller firmware; SPORT0/1 handle TDM backplane and analog front-end interfaces. | Use Scenario: Closed-loop servo drive controlling PMSM motors with field-oriented control (FOC) algorithm. IC Role / Device Role / Timing Role: Real-time computation engine performing Park/Clarke transforms, PI regulation, and PWM modulation timing. Use Value: 52 MIPS throughput executes 20 kHz FOC loop within 50 μs; dual DAGs manage current sensor buffers and PWM lookup tables simultaneously. |
| Portable Medical Ultrasound | Digital Audio Effects Processor |
Use Scenario: Handheld ultrasound device performing beamforming and B-mode image reconstruction. IC Role / Device Role / Timing Role: Signal processor executing FIR-based delay-and-sum beamforming and log-compression on RF data. Use Value: 16K×16-bit data RAM holds 128-channel echo samples; 19 ns cycle time ensures sub-100 μs latency for real-time scan-line processing. | Use Scenario: Multi-effects pedal applying reverb, chorus, and distortion to guitar signals in real time. IC Role / Device Role / Timing Role: Audio DSP running multiple parallel IIR/FIR filters and nonlinear distortion models. Use Value: Dual SPORTs interface to stereo ADC/DAC; on-chip memory eliminates external SRAM, reducing BOM cost and board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DSP microcomputer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2185LSTZ-210 | Same core, identical memory (16K×24-bit PM/16K×16-bit DM), but in 144-ball BGA package. | Requires different PCB layout and reflow profile; better thermal performance but no pin compatibility. | Select when higher I/O density or improved thermal dissipation is required over LQFP constraints. |
| TMS320VC5402PGE | 16-bit C54x DSP with 32K×16-bit RAM, 100-MIPS peak, but lacks integrated companding and ICE-Port. | Needs external codec for telephony; supports larger code size but requires more external memory for equivalent functionality. | Choose for higher MIPS budget and legacy C54x toolchain compatibility, accepting added peripheral complexity. |
Compared with ADSP-2185LKCA-210, the ADSP-2185LSTZ-210 offers identical processing capability in a space-constrained BGA form factor, while the TMS320VC5402PGE trades integrated peripherals for raw speed and memory scale-making the ADSP-2185LKCA-210 optimal where compact LQFP packaging and hardware companding reduce system-level design effort.
Availability
ADSP-2185LKCA-210 is available at Aetrix Electronics and suitable for voice communications terminals, industrial motor controllers, portable medical imaging devices, and digital audio effects processors requiring stable component supply across extended production lifecycles.
Supply support for ADSP-2185LKCA-210 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.
The ADSP-2185LKCA-210 belongs to the ADSP-218xL series of single-chip DSP microcomputers designed for cost-sensitive, low-power embedded signal processing applications requiring integrated memory and serial connectivity.
FAQ
What is the maximum operating frequency and instruction throughput of the ADSP-2185LKCA-210?
The ADSP-2185LKCA-210 operates with a 19 ns instruction cycle time, delivering 52 MIPS sustained performance. This is achieved using a 40 MHz external clock input (or crystal), which drives an internal 52.63 MHz instruction clock. Every instruction-including ALU, MAC, and shifter operations-executes in a single cycle, enabling deterministic real-time processing for audio, motor control, and medical imaging algorithms.
Does the ADSP-2185LKCA-210 support hardware-based audio companding, and if so, which standards?
Yes, the ADSP-2185LKCA-210 supports hardware companding compliant with CCITT Recommendation G.711, including both A-law and μ-law encoding/decoding. This capability is implemented directly in the SPORT peripherals and eliminates the need for external codecs in telephony, VoIP, and voice recording applications-reducing system cost and latency while maintaining signal fidelity.
How does the ADSP-2185LKCA-210 manage low-power operation, and what is its power-down recovery time?
The ADSP-2185LKCA-210 supports three low-power modes: Power-Down, Idle, and Slow Idle. In Power-Down mode, it achieves ultra-low standby power dissipation and recovers in exactly 400 CLKIN cycles (≤10 μs at 40 MHz). Recovery is deterministic and does not require external reset assertion-enabling rapid wake-up for burst-mode signal acquisition in battery-powered equipment.
What memory configuration does the ADSP-2185LKCA-210 provide, and how is it utilized in typical applications?
The ADSP-2185LKCA-210 integrates 16K words of 24-bit program RAM and 16K words of 16-bit data RAM. Program memory stores both instructions and constants, enabling dual-operand fetches; data memory supports circular buffering for real-time streaming. This configuration is sufficient to run complete voice codecs, motor control algorithms, or ultrasound beamformers without external memory-reducing latency and system complexity.
Is the ADSP-2185LKCA-210 pin-compatible with other members of the ADSP-218xL family, and what distinguishes it from the ADSP-2185LSTZ-210?
Yes, all ADSP-218xL series devices-including ADSP-2185LKCA-210-are pin-compatible within the same package type. The ADSP-2185LKCA-210 uses a 100-lead LQFP package, while the ADSP-2185LSTZ-210 uses a 144-ball BGA. Both share identical core architecture, memory map, and instruction set-but differ in thermal performance, board-level routing, and assembly requirements due to package geometry.
ADSP-2185LKCA-210 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 52.5MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 80kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2185LKCA-210 FAQ
1.How can I place an order for ADSP-2185LKCA-210 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2185LKCA-210 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-2185LKCA-210 reliable?
The price and inventory of ADSP-2185LKCA-210 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2185LKCA-210 is usually 5 days.
3.What payment methods are accepted for ADSP-2185LKCA-210?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2185LKCA-210 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2185LKCA-210?
ADSP-2185LKCA-210 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2185LKCA-210 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-2185LKCA-210?
For technical support, including ADSP-2185LKCA-210 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2185LKCA-210 requirements.
6.How does Aetrix verify that ADSP-2185LKCA-210 is sourced from the original manufacturer or authorized distributors?
All ADSP-2185LKCA-210 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-2185LKCA-210 meets industry standards.
7.What is the process for return or replacement of ADSP-2185LKCA-210?
All ADSP-2185LKCA-210 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2185LKCA-210, 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-2185LKCA-210 part is unused and in its original packaging.
Return procedure for ADSP-2185LKCA-210:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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