ADUC844 Obsolete 24-Bit ADC Microcontroller In Stock | ADI RFQ
The ADUC844 is a precision analog microcontroller from Analog Devices. It integrates a 24-bit sigma-delta ADC, auxiliary 16-bit ADC, 12-bit DAC, Flash memory and a single-cycle 8052-compatible processor.
Analog Devices lists the ADUC844 as obsolete. Remaining inventory is mainly required for industrial equipment repair, legacy production and replacement of failed components.
ADUC844 Specifications
| Parameter | Specification |
| Manufacturer | Analog Devices |
| Lifecycle | Obsolete |
| MCU core | Single-cycle 8052-compatible core |
| Primary ADC | 24-bit sigma-delta ADC |
| Auxiliary ADC | 16-bit sigma-delta ADC |
| DAC | 12-bit voltage-output DAC |
| Program Flash | Up to 62KB |
| Data Flash / RAM | 4KB / 2,304 bytes |
| Interfaces | UART, SPI and I簡C-compatible |
| Voltage options | 3V and 5V versions |
| Packages | 52-lead PQFP/MQFP or 56-lead CSP |
Common ADUC844 Part Numbers
| Part number | Program Flash | Voltage version | Package |
| ADUC844BS62-3 | 62 KB | 3 V | 52-lead PQFP/MQFP |
| ADUC844BS62-5 | 62 KB | 5 V | 52-lead PQFP/MQFP |
| ADUC844BCP62-3 | 62 KB | 3 V | 56-lead CSP |
| ADUC844BCP62-5 | 62 KB | 5 V | 56-lead CSP |
| ADUC844BCP32-3 | 32 KB | 3 V | 56-lead CSP |
| ADUC844BCP32-5 | 32 KB | 5 V | 56-lead CSP |
| ADUC844BCP8-3 | 8 KB | 3 V | 56-lead CSP |
| ADUC844BCP8-5 | 8 KB | 5 V | 56-lead CSP |
ADUC844 Replacement: Can ADUC834 Be Used?
Analog Devices identifies the ADUC834 as the suggested replacement. However, it should not be treated as an automatic drop-in replacement for every ADUC844 application.
| Comparison | ADUC844 | ADUC834 |
| Lifecycle | Obsolete | Production |
| MCU architecture | Single-cycle 8052-compatible core | Conventional 8051-compatible core |
| Primary ADC | 24-bit sigma-delta | 24-bit sigma-delta |
| Auxiliary ADC | 16-bit sigma-delta | 16-bit sigma-delta |
| Program Flash | Up to 62 KB | 62 KB |
| Data Flash | 4 KB | 4 KB |
| Package families | 52-lead PQFP/MQFP and 56-lead CSP | 52-lead MQFP and 56-lead LFCSP |
| Migration status | Original device | ADI suggested replacement; validation required |
ADUC844 Stock and Price
ADUC844 availability depends on the exact part number, quantity, package and date-code requirements. Please provide:
Complete part number
Required quantity
Destination country
Date-code requirements
Testing or traceability requirements
Stock, price, date code and lead time will be confirmed with each RFQ.
FAQ
Is ADUC844 obsolete?
Yes. Analog Devices officially classifies the ADUC844 product family as obsolete.
What is the difference between ADUC844BS and ADUC844BCP?
ADUC844BS uses a 52-lead flat package, while ADUC844BCP uses a 56-lead CSP package.
What do the -3 and -5 suffixes mean?
The -3 suffix indicates the 3V version, while -5 indicates the 5V version.
Can ADUC834 directly replace ADUC844?
Not in every application. ADUC834 is the ADI-suggested replacement, but processor timing, firmware, package and pin compatibility must be verified.
How can I request an ADUC844 quotation?
Send the complete ADUC844 part number, required quantity and delivery country to DataStorageIC.
Request an ADUC844 Quote
Looking for ADUC844BS62-3, ADUC844BS62-5, ADUC844BCP62-3 or ADUC844BCP62-5?
Contact DataStorageIC for current stock, price, date-code information and delivery options.
