AD1674KNZ Equivalent & Substitute Parts

Part Overview

The AD1674KNZ is a 12-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 at 100k samples per second with external or internal reference capability. The part is Active in product status and widely used in industrial measurement and instrumentation systems. Equivalent and substitute parts are identified based on matching core electrical specifications, package compatibility, and operational parameters to ensure direct functional replacement in circuit designs.

Substiute Parts

AD1674KNZ

Analog Devices Inc.In Stock: 3095AD1674KNZ Datasheet

Current PartRFQ

AD1674JNZ

Analog Devices Inc.In Stock: 7687AD1674JNZ Datasheet

Parametric EquivalentRFQ

MAX174ACPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 779MAX174ACPI+ Datasheet

SimilarRFQ

MAX174BCPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 698MAX174BCPI+ Datasheet

SimilarRFQ

MX574AKEPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 807MX574AKEPI+ Datasheet

SimilarRFQ

MX574ALEPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 809MX574ALEPI+ Datasheet

SimilarRFQ

MX674AJEPI+

Analog Devices Inc./Maxim IntegratedIn Stock: 740MX674AJEPI+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD1674KNZ are classified into two categories based on parametric alignment:

Parametric Equivalent: AD1674JNZ matches all critical electrical and mechanical specifications of the main part, including 12-bit resolution, 100k sampling rate, ±11.4V ~ 16.5V analog supply voltage, 5V digital supply, external/internal reference capability, and 28-DIP package. This part differs only in temperature grade classification and represents a direct functional equivalent.

Similar Substitutes: MAX174ACPI+, MAX174BCPI+, MX574AKEPI+, MX574ALEPI+, and MX674AJEPI+ share the core 12-bit resolution, single-ended input, SAR architecture, 28-DIP package, and parallel data interface. These parts are grouped as similar substitutes due to variations in sampling rate (40k to 125k), reference type configuration, supply voltage ranges, and operating temperature ranges. Selection among these parts depends on specific application requirements for sampling speed and thermal operating conditions.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): AD1674JNZ is the primary equivalent for AD1674KNZ. Both parts maintain identical electrical specifications, package configuration, and compliance certifications (ROHS3 Compliant). Selection between these two Analog Devices parts depends on inventory availability and procurement lead times, as they are functionally interchangeable.

Conditional Substitution (Similar Parts): The MAX174ACPI+ and MAX174BCPI+ series offer higher sampling rates (125k vs. 100k) but differ in reference type (internal only) and supply voltage configuration. These parts are suitable only when circuit design accommodates internal reference operation and the higher sampling rate does not introduce timing conflicts.

The MX574AKEPI+ and MX574ALEPI+ series operate at reduced sampling rates (40k) with extended temperature range (-40°C ~ 85°C). These parts are appropriate for applications requiring industrial temperature operation but where lower sampling frequency is acceptable.

The MX674AJEPI+ provides intermediate sampling rate (66k) with extended temperature range and represents a compromise option for designs requiring thermal robustness without maximum sampling speed.

All substitute parts maintain ROHS3 compliance and Active product status, ensuring regulatory alignment and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can AD1674JNZ directly replace AD1674KNZ without circuit modification?

A: Yes. AD1674JNZ is a parametric equivalent with identical electrical specifications, supply voltage requirements, reference configuration, and 28-DIP package pinout. No circuit modifications are required.

Q: What are the key differences between AD1674KNZ and MAX174ACPI+?

A: The primary differences are sampling rate (100k vs. 125k), reference type (external/internal vs. internal only), and supply voltage configuration (±11.4V ~ 16.5V vs. 5V, -12V, -15V). Circuit design must accommodate internal reference operation and alternative supply voltages when using MAX174ACPI+.

Q: Are MX574AKEPI+ and MX574ALEPI+ suitable for room-temperature applications?

A: Yes. Both parts operate within the 0°C ~ 70°C range required for standard industrial applications. Their extended temperature range (-40°C ~ 85°C) provides additional thermal margin but is not required for room-temperature operation.

Q: Do all substitute parts use the same 28-DIP package?

A: Yes. All listed substitute parts use the 28-DIP (0.600", 15.24mm) package with identical pin configuration, enabling direct socket replacement in through-hole PCB designs.

Q: Which substitute part offers the closest performance match to AD1674KNZ?

A: AD1674JNZ provides the closest match with identical 100k sampling rate, dual reference capability, and matching supply voltage specifications. For applications requiring higher sampling rates, MAX174ACPI+ and MAX174BCPI+ operate at 125k samples per second.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed parts, including the main part AD1674KNZ and all substitutes, are ROHS3 Compliant, meeting environmental and regulatory requirements for commercial and industrial applications.