ADSP-2105BP-80 - 16-Bit 20 MIPS DSP | Analog Devices
MPN： ADSP-2105BP-80 ✗ 停產ADSP-2105BP-80 概覽
A digital signal processor, or DSP, is a specialized microprocessor architecture designed to execute filtering, Fourier analysis, waveform generation, control, and other repetitive numeric operations efficiently. The ADSP-2105 belongs to the ADSP-2100 family of single-chip DSP microcomputers. Its architecture uses separate instruction and data paths, multiple data buses, dedicated computation units, data address generators, and a program sequencer to support sustained signal-processing workloads.
The ADSP-2105BP-80 operates from a 5 V supply and is rated for an ambient operating range of -40°C to 85°C. Its fixed-point arithmetic, 16-bit data bus, and 20 MIPS execution capability make it suitable for embedded audio, communications, industrial control, instrumentation, and measurement systems. The processor architecture also supports three-bus operation, allowing computational and memory-access activities to proceed in parallel.
The ADSP-2105 family is designed for algorithms requiring predictable real-time execution, including digital filters, signal modulation, spectrum analysis, and closed-loop control. Its common DSP core separates the computational engine, address generation, and program sequencing functions. This organization reduces the overhead associated with general-purpose processors when calculations repeatedly access coefficients and sample data.
Typical uses include industrial motor and process control, telemetry and communications signal processing, audio filtering, vibration analysis, and laboratory instrumentation. The processor's 20 MIPS rate and 16-bit fixed-point format provide a practical balance between throughput, data resolution, and implementation simplicity for legacy embedded systems that were designed around the ADSP-2100 family.
When designing a new circuit around the ADSP-2105BP-80, account for the processor's legacy architecture, external-memory interface, and 5 V supply requirements before assuming software portability to a modern DSP. Because the product family is obsolete, preserve existing board layouts, development tools, libraries, and application notes when maintaining or repairing a deployed system. Confirm every pin assignment against the manufacturer datasheet before PCB work.
This page combines the ADSP-2105BP-80 electrical and packaging details, practical application guidance, lifecycle information, and same-footprint family alternatives. It also highlights the architectural characteristics and maintenance constraints that should be considered when sourcing this obsolete processor for an existing 68-pin PLCC design.
直接替換替代品，適用於 ADSP-2105BP-80 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ADSP-2105KP-40
✅ 直接替換📋 參考替代品（不在目錄中）
ADSP-2105KP-80
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADSP-2105KP-100
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADSP-2105BP-40
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADSP-2105BP-100
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
ADSP-2105BP-80 規格
| Product Type | 16-bit fixed-point digital signal processor |
| Instruction Throughput | 20 MIPS |
| Clock Speed | 20 MHz |
| 資料匯流排寬度 | 16 bit |
| 供應電壓 | 5 V |
| Serial Port Count | 1 port |
| Package Type | 68-pin PLCC |
| Package Dimensions | 24.23 mm x 24.23 mm |
| 腳位數 | 68 pins |
| 安裝類型 | Surface mount |
| 工作溫度 | -40°C to 85°C |
| Architecture | Enhanced Harvard architecture with three-bus performance |
| Arithmetic Format | 16-bit fixed-point |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
ADSP-2105BP-80 24.23 mm x 24.23 mm 腳位配置指南
ADSP-2105BP-80（24.23 mm x 24.23 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ADSP-2105BP-80.
請參閱 資料表 以查看完整腳位配置。
典型應用
ADSP-2105BP-80 適用於 6 應用s: Industrial Process Control, Digital Audio Filtering, Communications Signal Processing, Vibration and Condition Monitoring, Industrial Motor Control, Test and Measurement Instrumentation.
Industrial Process Control
The ADSP-2105BP-80 fits legacy industrial process-control loops that require deterministic fixed-point calculations. According to the ADSP-2105 manufacturer datasheet, its 16-bit fixed-point architecture and 20 MIPS throughput support filter and control-algorithm execution, while the enhanced Harvard organization and three-bus performance help overlap computation with data movement. Use it in an existing 68-pin PLCC controller for sampled sensor conditioning, set-point calculation, and actuator-command generation. The primary benefit is continuity with established ADSP-2100 software and hardware. The design trade-off is the obsolete lifecycle status and the need to maintain legacy tooling, libraries, and 5 V power infrastructure.
推薦
Digital Audio Filtering
The ADSP-2105BP-80 can implement fixed-point filters, equalization, and waveform shaping in legacy digital audio equipment. Its 20 MIPS instruction throughput provides sufficient arithmetic capacity for modest 16-bit audio paths, while the three-bus DSP architecture improves overlap between coefficient access, sample movement, and computation. According to the ADSP-2105 manufacturer datasheet, the processor is designed for high-speed numeric signal processing rather than general-purpose control. Use the existing ADSP-2100 development environment for compatible audio algorithms and verify serial-port timing against the peripheral connected to the single serial port. The 5 V supply and obsolete product status make board reuse preferable to redesign.
推薦
Communications Signal Processing
The ADSP-2105BP-80 is suitable for fixed-point modem, modulation, filtering, and spectral-analysis functions in established communications equipment. Its 20 MIPS throughput and 16-bit arithmetic allow real-time execution of moderate-complexity algorithms, and the parallel bus architecture is useful for continuously moving samples and coefficients through memory. According to the ADSP-2105 manufacturer datasheet, the common ADSP-2100 core supports computation units, data address generators, and program sequencing. Use the processor when maintaining an installed communication node rather than starting a new high-volume platform. Verify serial-interface timing, external-memory sizing, and clock sources because the available family documentation must govern the final design.
推薦
Vibration and Condition Monitoring
The ADSP-2105BP-80 can perform fixed-point filtering and spectral analysis for legacy vibration-monitoring equipment. According to the ADSP-2105 manufacturer datasheet, its 20 MIPS throughput supports real-time numeric processing, while the enhanced Harvard architecture and three-bus performance help sustain sample processing and coefficient access. The device is appropriate for an existing 68-pin PLCC analyzer that must calculate filtered acceleration or vibration data in real time. Pair the processor with suitable analog front-end amplification and anti-alias filtering. Because the product family is obsolete, reproduce the original clock, memory, and serial interface exactly, and verify long-duration numerical behavior before deploying the processor in a monitoring product.
推薦
Industrial Motor Control
The ADSP-2105BP-80 can execute fixed-point control algorithms in legacy motor-drive and positioning systems. According to the ADSP-2105 manufacturer datasheet, its 20 MIPS throughput and parallel three-bus architecture support real-time sampling, control-law computation, and command generation. The processor is most useful when replacing an identical component in an existing 68-pin PLCC controller, particularly when retaining the validated ADSP-2100 software toolchain. Its 16-bit fixed-point format allows direct use of scaled gain and compensation coefficients. The engineering trade-off is that the obsolete lifecycle status makes qualification of any family alternative essential, and the original 5 V external-memory and peripheral interface must be preserved.
推薦
Test and Measurement Instrumentation
The ADSP-2105BP-80 fits legacy measurement instruments that perform waveform analysis, calibration, or real-time filtering. Its 16-bit fixed-point arithmetic and 20 MIPS throughput provide enough computational capability for moderate signal-processing tasks, and its parallel data paths support sustained sample movement. According to the ADSP-2105 manufacturer datasheet, the processor is intended for high-speed numeric applications rather than general-purpose user interfaces. Use it when preserving an existing analyzer platform, with separate circuitry for precision measurement, stimulus generation, and operator control. Since the family is obsolete, validate oscillator startup, memory compatibility, and numerical outputs against the original system. Keep a known-good ADSP-2105BP-80 for maintenance and fault diagnosis.
推薦
推薦產品摘要
工程參考資料，適用於 ADSP-2105BP-80 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADSP-2105KP-40 | ADSP-2105KP-80 | ADSP-2105KP-100 | ADSP-2105BP-40 | ADSP-2105BP-100 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 68-PLCC (24.23 mm x 24.23 mm) | 68-PLCC (24.23 mm x 24.23 mm) | 68-PLCC (24.23 mm x 24.23 mm) | 68-PLCC (24.23 mm x 24.23 mm) | 68-PLCC (24.23 mm x 24.23 mm) | 68-PLCC (24.23 mm x 24.23 mm) |
| Processor Type | 16-bit fixed-point DSP | ADSP-2105 family DSP | ADSP-2105 family DSP | ADSP-2105 family DSP | ADSP-2105 family DSP | ADSP-2105 family DSP |
| Architecture | Enhanced Harvard architecture with three-bus performance | ADSP-2100 family common DSP core | ADSP-2100 family common DSP core | ADSP-2100 family common DSP core | ADSP-2100 family common DSP core | ADSP-2100 family common DSP core |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
主要差異化特點
- Exact BP-80 ordering specification (對比ADSP-2105KP-40)
- Documented operating-temperature ceiling (對比ADSP-2105BP-40)
- Single-chip fixed-point DSP integration (對比ADSP-2105BP-100)
設計說明
Do not substitute an ADSP-2105 ordering code solely because it is described as a family equivalent. Confirm the 68-pin PLCC footprint, pin names, 5 V supply requirements, clock rating, temperature grade, memory organization, and serial-interface timing against the manufacturer data sheet. In particular, verify whether the BP and KP ordering codes indicate different package construction. A successful replacement should be tested with the original clock, memory devices, power rails, and peripheral circuitry before it is used in production.
The ADSP-2105BP-80 requires a 5 V supply, and an obsolete legacy board may contain components no longer supported by current power-supply families. Preserve the original regulator topology and decoupling arrangement when replacing the processor. Check the actual supply tolerance at the PLCC power pins under processor activity and verify that the external memory and serial interface do not exceed their voltage limits. A quiet 5 V rail is important because DSP performance depends on stable clock and logic levels.
Treat the 68-pin PLCC footprint as a complete land-pattern transfer, not a four-corner approximation. Before rework, compare the PCB pad dimensions and pin-1 orientation with the package drawing in the ADSP-2105 manufacturer data sheet. Preserve short clock routing, adequate decoupling at each supply pin, and the original memory-bus topology. If a substitute is assembled by hand, inspect all 68 joints because hidden solder bridges on a leaded PLCC package can create intermittent bus or clock failures.
The specified ambient range of -40°C to 85°C does not by itself establish safe operation inside an enclosed instrument. Use the manufacturer data sheet to determine processor dissipation, maximum junction temperature, and package thermal characteristics under the installed clock and memory activity. Provide unobstructed airflow where possible, keep nearby heat sources away from the PLCC, and inspect older boards for damaged thermal pathways, contamination, or degraded connectors. Reassess thermal margins after substituting any family member with different construction or electrical limits.
合規資訊
No explicit compliance declarations are identified for the ADSP-2105BP-80. The part is an obsolete industrial DSP rather than an automotive-qualified device, so AEC-Q100 is not applicable.