ADSP-2101BP-50 - 16-Bit 12.5 MHz DSP | Analog Devices
料号： ADSP-2101BP-50 ✗ 停产ADSP-2101BP-50 概述
A digital signal processor, or DSP, is a semiconductor architecture designed to execute arithmetic-intensive operations efficiently. Unlike a general-purpose microprocessor, a DSP combines computation units, data address generators, and a program sequencer around operations such as multiplication, accumulation, and fast memory access. The ADSP-2101 places these functions together with program RAM, data RAM, a programmable timer, and serial communication resources for standalone signal-processing designs.
The ADSP-2101BP-50 combines a 16-bit fixed-point arithmetic format with a 12.5 MHz operating clock. Its fixed-point architecture uses integer representations for real-valued calculations, allowing efficient implementation of filters, control loops, waveform generation, and spectral analysis. The processor includes 3 kB of RAM for data and program storage, two serial ports for peripheral or processor-to-processor communication, and a programmable timer for periodic and timing-related functions.
Analog Devices describes the ADSP-21xx processors as members of a common-core family. This common core combines computation units, data address generators, and the program sequencer, while individual family members vary in memory capacity, clock speed, serial-port count, and package configuration. The ADSP-2101 is positioned as a single-chip solution for applications requiring deterministic numeric processing without a separate external microprocessor.
Typical uses include audio signal processing, industrial measurement, communications filtering, vibration analysis, control systems, and embedded instrumentation. The two serial ports can support synchronous or asynchronous peripheral links, while the timer supports event scheduling and sampling functions. For designs that use the processor as the system controller, the on-chip RAM and timer reduce the amount of external logic required for basic acquisition and processing tasks.
The 68-pin PLCC package makes ADSP-2101BP-50 suitable for legacy systems designed around surface-mount leaded-chip carriers. PCB layout should preserve the manufacturer's pin assignments and provide suitable bypass capacitance at the power-supply pins. Because the device is obsolete, new production designs should verify availability and long-term sourcing before committing to it, while repairs and industrial equipment can use it as a functional replacement for an installed original part.
This product page combines the manufacturer's family architecture, package information, operating limits, and exact-ordering details with practical replacement guidance. It also distinguishes verified 12.5 MHz ADSP-2101BP-50 parameters from higher-speed family variants so engineers can assess clock, memory, package, and lifecycle differences before changing a production PCB.
直接替换替代料： ADSP-2101BP-50 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
ADSP-2101BP-100
✅ 直接替换📋 参考替代料（不在目录中）
ADSP-2101BPZ-100
✅ 直接替换📋 参考替代料（不在目录中）
ADSP-2101BP-50 规格参数
| Processor Type | 16-bit fixed-point digital signal processor |
| Architecture | Single-chip DSP microcomputer |
| Maximum Clock Speed | 12.5 MHz |
| Core Architecture | ADSP-21xx common core |
| On-Chip RAM | 3 kB |
| Serial Port Count | 2 ports |
| Programmable Timer | 1 timer |
| 电源电压 | 5 V |
| I/O Voltage | 5 V |
| 封装 | 68-pin PLCC |
| Package Dimensions | 24.23 mm x 24.23 mm |
| 安装类型 | Surface mount |
| 工作温度 | -40 °C to +85 °C |
| Data Arithmetic | Fixed point |
| 生命周期状态 | Obsolete |
| RoHS 状态 | unknown |
| REACH Status | unknown |
ADSP-2101BP-50 24.23 mm x 24.23 mm 引脚配置指南
ADSP-2101BP-50（24.23 mm x 24.23 mm 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ADSP-2101BP-50.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADSP-2101BP-50 适用于 6 应用s: Digital Audio Filtering, Industrial Vibration Monitoring, Communications Signal Conditioning, Precision Measurement and Instrumentation, Motor Control and Automation, Legacy Equipment Repair.
Digital Audio Filtering
The ADSP-2101BP-50 is suitable for legacy audio-processing circuits that perform fixed-point filtering, equalization, or signal conditioning. Its 16-bit architecture and 12.5 MHz clock provide deterministic arithmetic, while 3 kB of on-chip RAM can hold short filter programs and working data. The two serial ports allow connection to audio converters or external signal sources. A replacement design must preserve the original 12.5 MHz timing because faster ADSP-2101 grades can change interrupt latency and timer-derived sampling periods.
推荐
Industrial Vibration Monitoring
The ADSP-2101BP-50 can serve as the real-time processor in legacy vibration-monitoring equipment, where acceleration signals are sampled and processed by fixed-point algorithms. Its 12.5 MHz clock supports deterministic filtering, and its two serial ports can connect to sensors and a supervisory controller. The -40 °C to +85 °C operating range covers many industrial environments. For new installations, verify obsolete-part availability and validate sampling timing before relying on the processor for safety- or maintenance-critical monitoring.
推荐
Communications Signal Conditioning
The ADSP-2101BP-50 is applicable to compact communications subsystems that require real-time filtering, signal extraction, or error correction in fixed-point arithmetic. Its two serial ports support connections between the DSP, a transceiver, and a host controller, while the programmable timer provides a basis for frame timing or periodic processing. The processor is best suited to equipment already designed around the ADSP-2101 family. Faster 25 MHz family variants can improve processing margin but require revalidation of all clock-dependent software behavior.
推荐
Precision Measurement and Instrumentation
The ADSP-2101BP-50 can process measurements in legacy test and measurement instruments, including scaling, filtering, calibration, and compensation of sampled sensor data. Its fixed-point architecture supports compact numerical routines, and the 3 kB RAM is useful for coefficients, buffers, and program storage. The two serial ports allow a sensor front end and host interface to share the processor. Designers should account for the 12.5 MHz clock, 5 V operation, and legacy PLCC footprint when preserving an existing circuit.
推荐
Motor Control and Automation
The ADSP-2101BP-50 fits legacy embedded motor-control and automation subsystems that combine deterministic sampling with serial coordination. Fixed-point control calculations can be executed by the common ADSP-21xx core, while the programmable timer and two serial ports support periodic control updates and sensor or actuator links. Its -40 °C to +85 °C range is suitable for many industrial installations. Because lifecycle status is obsolete, use it primarily for equipment repair or a previously qualified design, not an unqualified new safety-critical project.
推荐
Legacy Equipment Repair
The ADSP-2101BP-50 is most practical as a replacement for a failed processor in an existing 68-pin PLCC circuit. Matching the package, 12.5 MHz clock grade, 5 V supply, and ADSP-2100 software environment helps preserve prior board qualification. Before ordering, remove the old device carefully, inspect the PLCC footprint for solder damage, and verify all supply rails. If a higher-clock ADSP-2101 variant is considered, check timer constants, serial timing, execution duration, and any firmware assumptions tied to 12.5 MHz operation.
推荐
推荐产品汇总
工程参考数据： ADSP-2101BP-50 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ADSP-2101BP-100 | ADSP-2101BPZ-100 |
|---|---|---|---|
| Manufacturer | Analog Devices | Analog Devices | Analog Devices |
| Package | 68-pin PLCC | 68-pin PLCC | 68-pin PLCC |
| Processor Architecture | 16-bit fixed-point DSP | 16-bit fixed-point DSP | 16-bit fixed-point DSP |
| Clock Speed | 12.5 MHz | 25 MHz | 25 MHz |
| Serial Port Count | 2 ports | 2 ports | 2 ports |
| Supply Voltage | 5 V | 5 V | 5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete |
| Pin Compatibility | 68-pin PLCC reference design | Same package; verify software timing | Same package; verify software timing |
关键差异点
- Original 12.5 MHz speed grade （对比 ADSP-2101BP-100)
- Established 68-pin PLCC footprint （对比 ADSP-2101BPZ-100)
- Common ADSP-2100 software architecture （对比 ADSP-2101BP-100)
设计说明
Do not treat a same-package ADSP-2101 variant as automatically interchangeable. The ADSP-2101BP-50 is rated at 12.5 MHz, while the documented ADSP-2101BP-100 and ADSP-2101BPZ-100 options are rated at 25 MHz. Review interrupt latency, timer intervals, serial-port timing, loop counts, and any firmware calibrated to processor execution speed before substituting a faster grade.
Use a stable 5 V supply and place suitable decoupling close to the power pins according to the pin-description and application information in the ADSP-2101 datasheet. Keep analog and digital return paths controlled, and avoid routing high-current switching-node returns beneath the 68-pin PLCC footprint. Because the exact core-current limit is not stated in the product listing, select the supply and thermal path using the manufacturer datasheet rather than an inferred current value.
Preserve the original 68-pin PLCC land pattern and verify pin 1 orientation against the package drawing before installation. Inspect removed devices and pads for cracks, lifted lands, and solder bridges because repeated servicing can damage this fine-pitch footprint. Follow the manufacturer's signal descriptions when assigning PCB tracks, and do not substitute pin functions based only on the shared ADSP-2101 family name.
Keep serial-port traces away from noisy power converters and analog input routing, especially when the processor interfaces with external converters or sensors. Confirm the electrical standard and signal direction for each serial connection in the datasheet. If a faster 25 MHz replacement is tested in a working system, monitor communication errors and timing-dependent behavior rather than assuming that successful boot-up proves full functional equivalence.
合规信息
The ADSP-2101 product family is obsolete. No specific RoHS, REACH, lead-free, halogen-free, or conflict-minerals declaration for ADSP-2101BP-50 appears in the referenced technical information.