ADSP-2101TG-40 - 16-Bit 25 MIPS DSP | Analog Devices
MPN: ADSP-2101TG-40 ✗ End of LifeADSP-2101TG-40 Overview
A digital signal processor, or DSP, is a microprocessor architecture optimized for arithmetic-intensive operations on streams of sampled data. Unlike a general-purpose processor, a DSP emphasizes multiply-accumulate throughput, deterministic execution, and data movement through dedicated memory and addressing resources. Within the product hierarchy, the ADSP-2101 belongs to the ADSP-21xx family of 16-bit processors and combines a core DSP architecture, data address generators, and a program sequencer.
The ADSP-21xx family combines on-chip program and data memory RAM, a programmable timer, and one or two serial ports. The ADSP-2101TG-40 is specifically identified as a 24-bit, 10.24 MHz device, a 16-bit processor capable of 25 MIPS throughput, and a 5 V integrated circuit. Two integrated serial ports reduce the need for separate interface components in communications, control, and signal-processing designs.
The processor uses a dedicated DSP computation architecture rather than a general-purpose instruction set. Its 16-bit arithmetic format and 25 MIPS execution rate make it suitable for real-time filtering, waveform generation, modulation, and embedded control calculations. The 10.24 MHz clock figure and 24-bit device classification should be interpreted together with the manufacturer's family documentation when configuring timing, memory, and peripheral settings.
Typical legacy applications include industrial signal processing, telecommunications, audio and waveform processing, motor control, and embedded instrumentation. The two serial ports can support synchronous or asynchronous peripheral traffic where the required interface format and timing match the ADSP-21xx architecture. Software migration should use the Analog Devices ADSP-21xx manuals and the established VisualDSP++ development flow identified by the manufacturer.
Before starting a new design, verify every pin, voltage, timing parameter, and environmental requirement against the manufacturer data sheet and the appropriate package drawing. Existing equipment can require this processor's architectural and software compatibility, so a redesign that changes the processor family should include hardware, firmware, timing, and qualification validation rather than relying only on package dimensions.
This page consolidates the identified processor architecture, package, lifecycle, application, and sourcing details into an engineering-focused reference. It also distinguishes documented characteristics from parameters that require confirmation against the original data sheet, helping teams evaluate whether the ADSP-2101TG-40 remains appropriate for a legacy repair or modernization program.
Drop-in alternatives for ADSP-2101TG-40 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesADSP-2101TG-40 Specifications
| Processor Type | 16-bit digital signal processor |
| Architecture | ADSP-21xx DSP core |
| Maximum Instruction Throughput | 25 MIPS |
| Nominal Clock Frequency | 10.24 MHz |
| Supply Voltage | 5 V |
| Serial Port Count | 2 ports |
| Program Memory | On-chip program memory RAM |
| Data Memory | On-chip data memory RAM |
| Timer | 1 programmable timer |
| Data Address Generators | On-chip data address generators |
| Program Sequencer | On-chip program sequencer |
| Package Type | PGA ceramic pin-grid array |
| Pin Count | 68 pins |
| Package Code | PGA-68 |
| Temperature Grade | Military |
| Lifecycle Status | Obsolete |
ADSP-2101TG-40 pga-68 Pin Configuration Guide
Pin configuration for ADSP-2101TG-40 (pga-68 package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADSP-2101TG-40.
Refer to the datasheet for full pin configuration.
Typical Applications
ADSP-2101TG-40 is suitable for 6 applications: Legacy Industrial Signal Processing, Telecommunications Signal Conditioning, Audio and Waveform Processing, Precision Instrumentation and Control, Motor and Motion Control, Aerospace and Military Equipment Maintenance.
Legacy Industrial Signal Processing
The ADSP-2101TG-40 is suited to maintaining legacy industrial signal-processing equipment whose control loop depends on deterministic 16-bit arithmetic. Its 25 MIPS throughput supports filtering and waveform calculations, while two serial ports provide interfaces to converters, sensors, or external controllers. Because the processor is obsolete, use it primarily where redesign would invalidate existing software or require extensive field recertification. Validate the 5 V power budget, serial timing, and PGA-68 footprint against the original equipment documentation before procurement.
Recommended
Telecommunications Signal Conditioning
The ADSP-2101TG-40 can support legacy telecommunications signal-conditioning functions requiring real-time multiply-accumulate processing. Its 25 MIPS throughput and two serial ports allow it to process incoming data and exchange control or sample information with surrounding circuitry. The military-grade temperature designation may suit equipment with elevated environmental requirements. For active deployments, confirm allowable operating temperature, supply tolerances, isolation, and system timing against the manufacturer data sheet because the product is obsolete.
Recommended
Audio and Waveform Processing
The ADSP-2101TG-40 is applicable to legacy audio and waveform-processing systems that rely on a dedicated DSP architecture rather than a general-purpose processor. Its 16-bit arithmetic, 25 MIPS execution capability, and dual serial-port arrangement can support signal generation, sampling, filtering, and control traffic. A design using this device must preserve the original ADSP-21xx memory map, serial-port configuration, and development environment. Validate interrupt latency and real-time performance in the target system rather than assuming clock frequency alone determines application throughput.
Recommended
Precision Instrumentation and Control
The ADSP-2101TG-40 can serve in legacy instrumentation and embedded-control systems that require deterministic signal calculations and communication with external equipment. Its 16-bit DSP core and 25 MIPS throughput provide dedicated arithmetic capability, while the programmable timer and two serial ports support measurement sequencing and peripheral control. Because it is obsolete and packaged in a 68-pin PGA, it is most appropriate for maintenance and controlled continuation programs. Confirm clock accuracy, interrupt behavior, memory requirements, and thermal margins in the completed assembly.
Recommended
Motor and Motion Control
The ADSP-2101TG-40 is applicable to legacy motion-control systems that compute loop equations or transform measurements in real time. Its 25 MIPS throughput provides dedicated DSP execution, and its serial ports can connect to sensors, position feedback, or actuator-control electronics. Qualification for a safety-relevant machine depends on the complete equipment design rather than the processor marking alone. Validate update latency, timing margins, failure modes, environmental requirements, and software certification before using this obsolete device in continued service.
Recommended
Aerospace and Military Equipment Maintenance
The military temperature grade associated with ADSP-2101TG-40 makes the device relevant to maintenance programs for qualified aerospace, defense, and other high-reliability equipment. Its 16-bit, 25 MIPS DSP architecture and two serial ports support embedded real-time signal processing where the original design already depends on the ADSP-2101 family. Obsolete status makes configuration control, traceability, and change documentation essential. Do not extend the original qualification solely from the order code; obtain the applicable device documentation, environmental limits, and program-specific approval requirements.
Recommended
Recommended Products Summary
Engineering reference data for ADSP-2101TG-40 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Analog Devices |
| Package | PGA-68 ceramic pin-grid array |
| Processor Architecture | 16-bit DSP |
| Maximum Throughput | 25 MIPS |
| Clock Frequency | 10.24 MHz |
| Supply Voltage | 5 V |
| Serial Ports | 2 |
| Temperature Grade | Military |
| Lifecycle Status | Obsolete |
Key Differentiators
- Dedicated legacy DSP architecture (vs ADSP-2101)
- Integrated dual serial-port interface (vs ADSP-2111)
- Exact military-grade package configuration (vs ADSP-2101)
Design Notes
Do not treat a processor with similar clock speed or instruction throughput as a replacement. The ADSP-2101TG-40 is a 68-pin PGA device whose replacement decision depends on exact pin assignment, 5 V supply requirements, memory organization, serial-port behavior, timer functions, clocking, and ADSP-21xx software compatibility. Treat a proposed substitute as drop-in only after schematic, timing, and firmware comparison are complete.
Use the manufacturer's data sheet for absolute maximum and recommended supply conditions, input thresholds, output levels, and supply-current limits. Place the required bypass capacitors directly at the supply and ground pins, and minimize loop area between each capacitor and the PGA-68 package. Because the processor is obsolete, preserve the original power sequencing and grounding arrangement whenever practical to reduce qualification risk.
Use the manufacturer PGA-68 pinout and mechanical drawing rather than a generic PGA footprint. Verify every signal on the original schematic, including grounds, supplies, reset, clock, serial interfaces, memory-control signals, and interrupt pins. A ceramic PGA also requires inspection for mechanical integrity and soldering quality; damaged lead frames, lid structures, or interconnect features can affect high-reliability maintenance assemblies.
Preserve the original clock distribution and serial-interface topology when repairing a working assembly. Route clock and high-speed serial signals over continuous reference planes, keep unused inputs in their documented states, and maintain the original termination and isolation arrangements. Compare timing at the processor pins rather than relying only on source-level waveforms, since obsolete legacy hardware may require narrow margins with modern test equipment.
Determine actual processor dissipation from the measured supply current, supply voltage, operating clock, and environmental conditions in the final assembly. Use the manufacturer package information and the equipment's thermal design to determine whether the PGA-68 requires airflow, a heatsink, or controlled enclosure temperature. Avoid attaching an improvised heat sink directly to the ceramic package without validating mechanical, electrical-insulation, and environmental constraints.
Compliance Information
Analog Devices identifies the ADSP-2101 family as obsolete. No explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statement is available for this order code.
