AD677KR Equivalent & Substitute Parts

Part Overview

The AD677KR is a 16-bit Analog to Digital Converter manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 100 kHz sampling rate and operates with ±12V analog supply and 5V digital supply. The part is currently classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

AD677KR

Analog Devices Inc.In Stock: 2676AD677KR Datasheet

Current PartRFQ

AD677KRZ

Analog Devices Inc.In Stock: 3252AD677KRZ Datasheet

DirectRFQ

AD677JRZ

Analog Devices Inc.In Stock: 1365AD677JRZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD677KR are qualified based on identical electrical and mechanical parameters. The substitution criteria are strictly limited to the following parameters:

• 16-bit resolution
• 100 kHz sampling rate
• Single input, single-ended configuration
• Serial data interface
• SAR architecture with external reference
• ±12V analog and 5V digital supply voltages
• 0°C to 70°C operating temperature range
• 28-SOIC package with identical physical dimensions
• Surface mount mounting type

All substitute parts maintain these specifications without deviation. Differences in product status and compliance certifications do not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both AD677KRZ and AD677JRZ are functionally equivalent to the AD677KR across all electrical and mechanical parameters. The primary distinction lies in product status and regulatory compliance.

AD677KRZ is the direct manufacturer equivalent with active product status, ROHS3 compliance, and REACH unaffected designation. This part is recommended for new designs and ongoing procurement where regulatory compliance is required.

AD677JRZ is a parametric equivalent with identical electrical specifications and active product status. It also carries ROHS3 compliance and REACH unaffected status. Selection between AD677KRZ and AD677JRZ should be based on availability and supply chain requirements, as both meet all functional and compliance criteria.

Frequently Asked Questions (FAQ)

Q: Can AD677KRZ or AD677JRZ be used as direct replacements for AD677KR?

A: Yes. Both parts are functionally equivalent across all electrical and mechanical parameters, including resolution, sampling rate, supply voltages, operating temperature range, and 28-SOIC package specifications.

Q: What is the difference between AD677KRZ and AD677JRZ?

A: Both parts are parametrically identical in electrical performance and package specifications. The designation difference reflects Analog Devices Inc. part numbering conventions. Both are active products with ROHS3 compliance and REACH unaffected status.

Q: Why is the AD677KR classified as obsolete?

A: The AD677KR has reached end-of-life status. AD677KRZ and AD677JRZ provide continued access to equivalent functionality for designs currently using the AD677KR.

Q: Are there any packaging differences between these parts?

A: All three parts use identical 28-SOIC packaging with 0.295" width (7.50mm). Mounting type and physical dimensions are identical, ensuring direct PCB compatibility.

Q: Do the substitute parts require any circuit modifications?

A: No. The substitute parts maintain identical electrical specifications for supply voltages, reference type, data interface, and operating temperature range. No circuit modifications are necessary for direct substitution.

Q: What is the significance of MSL 5 (48 Hours) rating?

A: This moisture sensitivity level indicates that the component can be exposed to moisture for up to 48 hours at specified conditions before soldering. All three parts carry the same MSL rating.