ADSP-2105BPZ-80 20 MIPS 16-Bit DSP | Analog Devices
料号： ADSP-2105BPZ-80 ✗ 停产ADSP-2105BPZ-80 概述
A digital signal processor is a specialized microprocessor architecture optimized for high-volume numerical operations such as filtering, modulation, transform, and control calculations. The ADSP-2105 belongs to the ADSP-2100 family, whose enhanced Harvard architecture separates the instruction bus from two data buses. This organization supports parallel instruction execution and three-bus data transfer, helping reduce bottlenecks in real-time signal-processing loops.
Core device attributes include a 16-bit data bus, 20 MIPS throughput, a 5 V nominal supply, one serial port, and integrated program and data memory RAM. The listed operating-temperature range is -40°C to +85°C, making the device suitable for industrial temperature environments. The ADSP-2105 product family also includes the ADSP-2101 and ADSP-2115, which share a common DSP core while providing different serial-port and memory configurations.
The ADSP-2105BPZ-80 uses an enhanced Harvard architecture with an instruction bus, dual data buses, and independent computation sections. Its interval timer supports periodic timing functions, while the serial port provides a dedicated interface for data transfer or peripheral connection. On-chip program and data RAM reduces external bus traffic in compact systems, although external memory access remains part of the processor's interface requirements.
Typical uses include industrial control, audio and communications signal processing, modulation and demodulation, measurement instrumentation, and embedded numeric processing where a 16-bit fixed-point engine is preferred over a general-purpose microcontroller. The processor is also useful in legacy or long-lifecycle industrial equipment that requires deterministic arithmetic and established ADSP-2100-family software support.
When laying out a new board, place the processor and its memory interface close to associated logic and route sensitive clock and data signals away from switching nodes. Before starting a redesign, verify clock, memory, and serial-port requirements because the ADSP-2105 is an obsolete family member and long-lived programs may depend on its specific memory map and peripheral behavior.
This page combines the manufacturer product status, distributor specifications, family architecture details, drop-in package alternatives, and practical design guidance in one place. It is intended to accelerate sourcing decisions and board-level feasibility checks for engineers maintaining ADSP-2105-based systems.
直接替换替代料： ADSP-2105BPZ-80 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ADSP-2105BPZ-80 （相同外形与封装尺寸） ——差异在于 Architecture, Clock Speed, Mounting Type, On-Chip Memory, Package Type.
ADSP-2105BPZ-16
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADSP-2105BPZ-32
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADSP-2105BPZ-40
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADSP-2105BPZ-50
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ADSP-2105KP-80
✅ 直接替换📋 参考替代料（不在目录中）
ADSP-2105BPZ-80 规格参数
| Product Type | Fixed-Point Digital Signal Processor |
| 数据总线宽度 | 16 bit |
| Clock Speed | 20 MHz |
| Instruction Throughput | 20 MIPS |
| Architecture | Enhanced Harvard architecture with three-bus performance |
| Nominal Supply Voltage | 5 V |
| Minimum Supply Voltage | 4.5 V |
| Maximum Supply Voltage | 5.5 V |
| 工作温度 | -40°C to +85°C |
| Serial Ports | 1 |
| On-Chip Memory | Program and data memory RAM |
| Timer | 1 interval timer |
| Package Type | 68-pin PLCC |
| Package Dimensions | 24.23 mm x 24.23 mm |
| 引脚数量 | 68 pins |
| 安装类型 | Surface mount |
| External Memory | External memory interface supported |
ADSP-2105BPZ-80 24.23 mm x 24.23 mm 引脚配置指南
ADSP-2105BPZ-80（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-2105BPZ-80.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ADSP-2105BPZ-80 适用于 6 应用s: Industrial Control and Automation, Audio and Communications Filtering, Measurement and Instrumentation, Legacy Equipment Maintenance, Digital Filter and Equalizer Designs, Modulation and Demodulation.
Industrial Control and Automation
The ADSP-2105BPZ-80 fits legacy industrial control loops that require deterministic fixed-point multiplication and sustained numeric throughput. Its 20 MIPS processing rate supports filtering, loop calculations, and signal conditioning without the overhead of a general-purpose instruction set, while the 16-bit arithmetic matches many 12- to 16-bit transducer and industrial I/O chains. The -40°C to +85°C range suits typical industrial enclosures. In an existing installation, retain the original clock configuration and memory map because the processor is obsolete and the safest replacement is another ADSP-2105 package variant with verified pin compatibility.
推荐
Audio and Communications Filtering
The ADSP-2105BPZ-80 is appropriate for fixed-point audio filtering, modulation, and communications front-end processing where the 16-bit data bus and 20 MIPS throughput match classic DSP workloads. Its dual data buses and enhanced Harvard architecture support parallel transfers between the program sequencer, data address generators, and computation units, reducing idle time during recursive filters. The single serial port can serve a codec, converter, or communications peripheral. Because serial-port capabilities vary across the ADSP-2100 family, verify the required interface topology and interrupt behavior before substituting another member.
推荐
Measurement and Instrumentation
The ADSP-2105BPZ-80 can serve as the numeric core of measurement equipment that performs scaling, digital correction, curve fitting, or noise filtering on sampled sensor data. Its 20 MIPS throughput provides useful margin for fixed-point algorithms, and the 5 V supply simplifies integration with older analog front ends and external logic. Program and data RAM keep frequently accessed working data close to the computation engine, while external memory supports larger programs or buffers. For laboratory or industrial instrumentation, confirm the required memory organization and peripheral mapping against the exact ADSP-2105 revision.
推荐
Legacy Equipment Maintenance
The ADSP-2105BPZ-80 is best used to maintain installed equipment whose control software, memory map, and board layout depend on the ADSP-2100 family. Because the device is listed as obsolete, procurement risk is more important than headline performance during repair work. A same-family clock grade can preserve software compatibility and board construction, but the replacement must be checked for clock, memory, serial-port, and pin-level equivalence. This approach minimizes redesign risk in motor controllers, analyzers, and communications equipment that would otherwise require a complete control-platform migration.
推荐
Digital Filter and Equalizer Designs
The ADSP-2105BPZ-80 is suited to real-time digital filters and equalizers because its enhanced Harvard architecture uses an instruction bus and two data buses to support parallel numeric operations. At 20 MIPS, the processor can execute filtering and control routines while transferring data through its serial port. Its 16-bit fixed-point format aligns with common sampled-audio and control-data widths, allowing integer coefficients and bounded accumulator design. When replacing the processor with another BPZ speed grade, recalculate coefficient scaling and loop timing rather than assuming that identical software timing remains valid at a lower clock.
推荐
Modulation and Demodulation
The ADSP-2105BPZ-80 can implement fixed-point modulation, demodulation, and mixing algorithms in communications modules where predictable execution speed is more important than general-purpose flexibility. The 20 MIPS capability supports multiply-accumulate-heavy routines, while dual data buses help overlap data transfer with computation. Its one serial port provides a focused path for exchanging processed samples with an external converter or transceiver. A replacement should preserve the serial-port configuration, memory organization, and clock assumptions because peripheral differences between related ADSP-2100 members can affect software compatibility even when the board footprint is similar.
推荐
推荐产品汇总
工程参考数据： ADSP-2105BPZ-80 ——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-2105BPZ-16 | ADSP-2105BPZ-32 | ADSP-2105BPZ-40 | ADSP-2105BPZ-50 | ADSP-2105KP-80 |
|---|---|---|---|---|---|---|
| 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) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Device Type | 16-bit fixed-point DSP | ADSP-2105 fixed-point DSP | ADSP-2105 fixed-point DSP | ADSP-2105 fixed-point DSP | ADSP-2105 fixed-point DSP | ADSP-2105 fixed-point DSP |
| Data Bus Width | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit |
| Serial Ports | 1 | 1 | 1 | 1 | 1 | 1 |
| Nominal Supply Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
关键差异点
- Exact 20 MHz performance class （对比 ADSP-2105BPZ-16)
- Direct same-speed family alternative （对比 ADSP-2105KP-80)
- Industrial-temperature operation （对比 ADSP-2105BPZ-16)
- Single-port configuration for focused legacy interfaces （对比 ADSP-2105BPZ-32)
设计说明
Do not assume that every ADSP-2105 designation is electrically and software interchangeable without checking the package drawing, clock grade, memory organization, and serial-port configuration. The -80 part is a 20 MHz, 20 MIPS configuration in a 68-pin PLCC. When substituting another BPZ grade, re-evaluate loop timing, timer periods, serial-transfer rates, and any code that assumes a fixed instruction cycle. Record the substitution in the equipment maintenance records because processor speed grades can affect calibration results.
The 68-pin PLCC footprint is sensitive to assembly temperature, lead coplanarity, and the availability of suitable inspection and rework processes. Prototype boards should be checked for bridging and pin-1 orientation before applying power. Because this package is not a common modern alternative, a new layout should also include a documented footprint decision that accounts for assembly yield and long-term repair strategy rather than relying only on nominal dimensions.
Design the 5 V rail for the full 4.5 V to 5.5 V operating range and place local bypass capacitance close to the processor supply pins. Keep supply and ground planes continuous, and isolate the DSP from switching-node currents where the system combines analog input conditioning with digital processing. Verify startup sequencing and rail settling before the processor begins code execution, particularly in systems where external memory must initialize consistently with the clock.
Route clock, program-bus, and data-bus signals on controlled-impedance layers where practical, and keep the clock path away from serial-port and external-memory return currents. Provide a clean return path beneath high-speed routing and avoid unnecessary stubs in unused processor interface networks. Since the part belongs to a mature legacy architecture, preserving the original reference layout and termination strategy is preferable to improvising a new clock tree during repair work.
合规信息
Analog Devices identifies the ADSP-2105 as obsolete. Specific RoHS, REACH, halogen-free, and conflict-minerals declarations were not established for this legacy part.