AD7871JP Equivalent & Substitute Parts

Part Overview

The AD7871JP is a 14-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 an 83 kSPS sampling rate and operates with ±5V supply voltages for both analog and digital domains. The device is packaged in a 28-PLCC (J-Lead) surface mount configuration.

The AD7871JP is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

AD7871JP

Analog Devices Inc.In Stock: 1218AD7871JP Datasheet

Current PartRFQ

AD7871JPZ

Analog Devices Inc.In Stock: 959AD7871JPZ Datasheet

DirectRFQ

AD7871KPZ

Analog Devices Inc.In Stock: 740AD7871KPZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD7871JP are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

• Resolution: 14 bits
• Sampling Rate: 83 kSPS
• Number of Inputs: 1
• Input Type: Single Ended
• Data Interface: SPI, Parallel
• Architecture: SAR
• Reference Type: Internal
• Voltage - Supply, Analog: ±5V
• Voltage - Supply, Digital: ±5V
• Operating Temperature Range: 0°C ~ 70°C
• Package / Case: 28-LCC (J-Lead)
• Mounting Type: Surface Mount

The substitute parts AD7871JPZ and AD7871KPZ match all critical electrical and mechanical parameters. Both are manufactured by Analog Devices Inc. and maintain functional equivalence with the original AD7871JP. The primary differences between substitutes relate to product status, packaging format, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both AD7871JPZ and AD7871KPZ are functionally equivalent substitutes for the obsolete AD7871JP. Selection between these two active alternatives should be based on the following factors:

Product Status: Both substitute parts are classified as active products, ensuring ongoing availability and manufacturer support compared to the obsolete AD7871JP.

Compliance Certifications: Both AD7871JPZ and AD7871KPZ are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in most jurisdictions.

Moisture Sensitivity: Both substitutes have a Moisture Sensitivity Level (MSL) of 3 (168 Hours), compared to the original part's MSL of 1 (Unlimited). This indicates stricter moisture handling requirements during storage and assembly. Appropriate moisture control measures must be implemented during component storage and printed circuit board assembly processes.

Packaging Format: The original AD7871JP was supplied without specified packaging format. Both substitutes are supplied in Tube packaging, which is standard for surface mount components and compatible with automated assembly equipment.

Frequently Asked Questions (FAQ)

Q: Can AD7871JPZ and AD7871KPZ be used interchangeably with AD7871JP?

A: Yes. Both substitute parts maintain identical electrical specifications, including 14-bit resolution, 83 kSPS sampling rate, ±5V supply voltages, and SAR architecture. The 28-PLCC package dimensions and pinout are identical, enabling direct board-level substitution.

Q: What is the significance of the different Moisture Sensitivity Levels?

A: The AD7871JP has MSL 1 (Unlimited), meaning it has no moisture sensitivity restrictions. The substitutes AD7871JPZ and AD7871KPZ have MSL 3 (168 Hours), requiring that components be stored in controlled humidity environments and used within 168 hours of exposure to ambient conditions. This requires implementation of moisture control procedures during component handling and assembly.

Q: Are there differences in the data interface between these parts?

A: No. All three parts support identical data interfaces: SPI and Parallel. Pin configuration and protocol compatibility are maintained across the AD7871JP, AD7871JPZ, and AD7871KPZ.

Q: What is the difference between AD7871JPZ and AD7871KPZ?

A: Both parts are functionally identical with matching electrical and mechanical specifications. The designation difference (JPZ versus KPZ) reflects internal Analog Devices Inc. product line categorization. Both are active products with ROHS3 compliance and REACH unaffected status. Selection between them can be based on availability or supplier preference.

Q: Is the 28-PLCC package compatible with existing PCB designs for AD7871JP?

A: Yes. The 28-PLCC (11.51x11.51) package used by both substitutes is mechanically and electrically identical to the original AD7871JP package. Existing PCB footprints, solder reflow profiles, and assembly processes require no modification.

Q: What supply voltage requirements must be maintained?

A: Both analog and digital supply voltages must be maintained at ±5V for all three parts. The internal reference type eliminates the need for external reference components, simplifying power supply design.