ADI Obsolete Components In Stock | DSP, ADC & RF ICs
Analog Devices has discontinued many legacy DSP, data-conversion and RF components that are still required for industrial equipment, automotive audio systems, communications hardware and maintenance projects.
DataStorageIC supports sourcing for selected obsolete ADI and former Hittite components. Available inventory may include discontinued SHARC processors, 16-bit DSPs, precision ADC microcontrollers and RF gain blocks.
Popular ADI Obsolete Components
| Part Number | Product Type | Key Specification | Status |
| ADSP-21065L | SHARC DSP | 32-bit floating-point processor | Obsolete |
| ADSP-2185L | Fixed-point DSP | 52 MIPS, 80KB RAM | Obsolete |
| ADSP-2187L | Fixed-point DSP | 52 MIPS, 160KB RAM | Obsolete |
| ADSP-21362 | Automotive audio DSP | 333MHz SHARC processor | Obsolete |
| ADSP-21368 | Professional audio DSP | 400MHz, 2.4 GFLOPS | Obsolete |
| ADUC844 | ADC microcontroller | 24-bit ADC, 8052 MCU, 62KB Flash | Obsolete |
| ADL5610 | RF gain block | 30MHz to 6GHz, 18.4dB gain | Obsolete |
| HMC921LP4E | RF power amplifier | 0.4GHz to 2.7GHz, 2W | Obsolete |
Obsolete ADI DSPs
Commonly requested models include:
ADSP-21065LCSZ-240: floating-point SHARC DSP for industrial, communications and audio systems.
ADSP-2185LBSTZ-210: 52 MIPS processor with 80KB of on-chip RAM.
ADSP-2187LBSTZ-210: pin-compatible ADSP-218x option with 160KB of on-chip RAM.
ADSP-21362: SHARC processor developed for automotive and professional audio processing.
ADSP-21368: 400MHz SHARC DSP with external memory support and integrated audio interfaces.
Obsolete ADC and Data-Acquisition Components
The ADUC844 combines an 8052-compatible microcontroller with a precision 24-bit ADC, an auxiliary 16-bit ADC, a 12-bit DAC and 62KB of Flash memory.
It is commonly required for legacy:
Industrial measurement equipment
Sensor interfaces
Process-control systems
Weighing instruments
Precision data loggers
ADI identifies the ADuC834 as a suggested replacement, but it should not be treated as an automatic drop-in substitute. Pinout, firmware, ADC performance and package compatibility must be reviewed.
Obsolete ADI and Hittite RF ICs
ADL5610 RF Gain Block
The ADL5610 is a 30MHz to 6GHz RF/IF gain block with approximately 18.4dB fixed gain, internal 50Ω matching and a 5V supply. Its SOT-89 package makes it suitable for legacy wireless, test and communication equipment.
HMC921LP4E RF Power Amplifier
The HMC921LP4E is a GaAs HBT MMIC amplifier covering approximately 0.4GHz to 2.7GHz. It provides up to 2W output power and is supplied in a compact 4mm × 4mm QFN package.
The part is used in cellular infrastructure, fixed wireless equipment, CATV systems and RF test instruments.
What to Include in Your RFQ
For faster stock confirmation, provide:
Complete manufacturer part number
Required quantity
Acceptable date-code range
Package or carrier requirement
New and unused condition requirement
Required inspection or traceability documents
Delivery destination
Pricing depends on the exact suffix, quantity, production lot and market availability.
Replacement and Compatibility Check
An active ADI component with similar specifications may not be pin-compatible with an obsolete device. Before approving a replacement, compare:
Pin configuration and package dimensions
Supply and I/O voltage
Processing architecture and software compatibility
Memory capacity and boot method
Peripheral interfaces
RF frequency, gain and output power
Temperature grade
For repair or maintenance projects, sourcing the original part number is often more practical than redesigning and requalifying the complete system.
FAQ
Are these ADI components officially obsolete?
Yes. Analog Devices currently marks the listed ADSP, ADuC, ADL and HMC product families as obsolete on its official product pages.
Do you have obsolete ADI components in stock?
Selected models may be available. Inventory, quantity, date code and price must be confirmed through an RFQ.
Why is the complete ADI part number important?
Suffixes can indicate the package, speed grade, temperature rating and shipping format. Parts from the same family may not be interchangeable.
Are datasheets available for discontinued ADI parts?
Yes. ADI normally retains product pages and obsolete datasheets for legacy components. Datasheets should be checked before purchase or replacement approval.
Can you provide an active replacement?
We can help identify possible alternatives, but the customer must verify electrical, mechanical and software compatibility before use.
Request an ADI Obsolete Components Quote
Looking for an obsolete Analog Devices DSP, ADC, microcontroller or RF IC? Send DataStorageIC the complete part number, required quantity and date-code requirements to receive stock confirmation, pricing and delivery information.
