AD8842ANZ Equivalent & Substitute Parts

Part Overview

The AD8842ANZ is an 8-bit Digital to Analog Converter manufactured by Analog Devices Inc., part of the TrimDAC® series. This component features voltage-buffered output, external reference capability, and SPI data interface, designed for precision data acquisition applications. The AD8842ANZ is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

AD8842ANZ

Analog Devices Inc.In Stock: 1878AD8842ANZ Datasheet

Current PartRFQ

AD8842ARZ

Analog Devices Inc.In Stock: 1426AD8842ARZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD8842ANZ are identified based on matching core electrical and functional parameters: 8-bit resolution, 8 independent D/A converters, voltage-buffered output topology, SPI interface, external reference configuration, ±5V analog supply, identical settling time, matching INL/DNL specifications, R-2R architecture, and equivalent operating temperature range. The primary distinction between the main part and its substitute lies in packaging and mounting technology: the AD8842ANZ uses 24-DIP through-hole packaging, while the AD8842ARZ employs 24-SOIC surface-mount packaging. Both parts share the same base product number (AD8842) and are functionally equivalent at the electrical level.

Parameter Comparison

Engineering Selection Recommendations

The AD8842ARZ serves as the active substitute for the obsolete AD8842ANZ. Both components are electrically and functionally identical, with all critical parameters—resolution, converter count, output characteristics, interface protocol, supply voltage, settling time, and accuracy specifications—matching exactly. The AD8842ARZ maintains active product status with ROHS3 compliance, making it suitable for new designs and legacy system replacements.

Selection between these parts depends on board-level design constraints. The AD8842ANZ's through-hole 24-DIP package accommodates breadboard prototyping and legacy PCB layouts designed for DIP components. The AD8842ARZ's surface-mount 24-SOIC package supports modern high-density PCB designs and automated assembly processes. Both parts operate across the full industrial temperature range (-40°C to 85°C) and maintain identical performance specifications.

Frequently Asked Questions (FAQ)

Q: Are AD8842ANZ and AD8842ARZ electrically interchangeable? A: Yes. Both parts share identical electrical specifications, including 8-bit resolution, 8 D/A converters, SPI interface, ±5V supply, 5.4µs settling time, and R-2R architecture. Substitution is valid at the functional level.

Q: What is the primary difference between these parts? A: The main difference is packaging and mounting technology. The AD8842ANZ uses 24-DIP through-hole packaging, while the AD8842ARZ uses 24-SOIC surface-mount packaging. This affects PCB layout, assembly method, and board space requirements.

Q: Can I use AD8842ARZ as a direct replacement for AD8842ANZ in existing designs? A: Direct PCB replacement is not possible due to different package footprints. However, the AD8842ARZ can replace the AD8842ANZ functionally if the PCB layout is redesigned to accommodate the 24-SOIC package.

Q: Why is the AD8842ANZ listed as obsolete? A: The AD8842ANZ has reached end-of-life status. The AD8842ARZ, with its surface-mount 24-SOIC package, represents the current active product offering from Analog Devices Inc. for this functional class.

Q: Are there compliance differences between these parts? A: The AD8842ARZ is ROHS3 compliant, while the AD8842ANZ compliance status is not specified. The AD8842ARZ also carries REACH Unaffected designation. For new designs subject to environmental regulations, the AD8842ARZ is the recommended choice.

Q: What are the moisture sensitivity considerations? A: The AD8842ANZ has MSL 1 (unlimited moisture sensitivity level), while the AD8842ARZ has MSL 3 (168 hours). The AD8842ARZ requires controlled storage conditions during handling and assembly.