AD677KD Equivalent & Substitute Parts

Part Overview

The AD677KD is a 16-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. This SAR (Successive Approximation Register) architecture device operates with external voltage reference and dual supply rails (±12V analog, 5V digital). The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, packaging preferences, or procurement lead time requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

AD677KD

Analog Devices Inc.In Stock: 1506AD677KD Datasheet

Current PartRFQ

AD677KNZ

Analog Devices Inc.In Stock: 1659AD677KNZ Datasheet

DirectRFQ

AD677JNZ

Analog Devices Inc.In Stock: 1791AD677JNZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD677KD are identified based on strict parameter equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

• 16-bit resolution and 100 kSPS sampling rate
• Single-ended input configuration with 1 input channel
• SAR architecture with external reference requirement
• Dual supply voltage requirements (±12V analog, 5V digital)
• Operating temperature range of 0°C to 70°C
• 16-DIP through-hole package format (0.300", 7.62mm)
• Active product status with RoHS3 compliance

All identified substitutes maintain these specifications without deviation. Differences are limited to packaging format (tube vs. alternative) and inventory availability, which do not affect functional or mechanical compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—AD677KD, AD677KNZ, and AD677JNZ—are functionally equivalent and directly interchangeable in circuit applications. Selection between these parts should be based on:

• Inventory availability and procurement lead times
• Packaging format preference (tube packaging for AD677KNZ and AD677JNZ)
• Supply chain logistics and cost considerations

All parts maintain active product status with identical compliance certifications (RoHS3, REACH Unaffected, EAR99 export classification). No performance degradation or functional limitation occurs when substituting between these part numbers. PCB layout, schematic design, and application firmware require no modification for cross-part substitution.

Frequently Asked Questions (FAQ)

Q: Can AD677KNZ or AD677JNZ be used as direct replacements for AD677KD?

A: Yes. All three parts are parametrically identical across all electrical specifications, pin configuration, package dimensions, and operating characteristics. Direct substitution is supported without circuit modification.

Q: What is the difference between AD677KD, AD677KNZ, and AD677JNZ?

A: The differences are limited to packaging format and inventory source. AD677KD uses standard packaging, while AD677KNZ and AD677JNZ are supplied in tube packaging. All other specifications remain identical.

Q: Are there any temperature or supply voltage differences between these parts?

A: No. All three parts operate identically across the 0°C to 70°C temperature range with ±12V analog and 5V digital supply requirements.

Q: Do these parts require different PCB footprints?

A: No. All parts use the 16-DIP (0.300", 7.62mm) through-hole package with identical pin assignments and mechanical dimensions.

Q: Are all parts RoHS3 compliant?

A: Yes. AD677KD, AD677KNZ, and AD677JNZ all carry RoHS3 compliance certification with MSL rating of 1 (Unlimited).