AD7871KP Equivalent & Substitute Parts

Part Overview

The AD7871KP is a 14-bit Analog to Digital Converter (ADC) 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 (11.51x11.51mm) surface mount configuration.

The AD7871KP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

AD7871KP

Analog Devices Inc.In Stock: 2297AD7871KP Datasheet

Current PartRFQ

AD7871KPZ

Analog Devices Inc.In Stock: 740AD7871KPZ Datasheet

DirectRFQ

AD7871JPZ

Analog Devices Inc.In Stock: 959AD7871JPZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD7871KP 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 and Parallel support
• Architecture: SAR
• Reference Type: Internal
• Supply Voltages: ±5V (Analog and Digital)
• Operating Temperature: 0°C to 70°C
• Package: 28-PLCC (J-Lead)
• Mounting: Surface Mount

All identified substitute parts meet these parameters without exception. Substitutes are categorized as follows:

Direct Manufacturer Equivalent: AD7871KPZ — identical electrical specifications with different packaging configuration (Tube vs. unspecified for main part).

Parametric Equivalent: AD7871JPZ — identical electrical and mechanical specifications, differing only in temperature grade designation suffix.

Parameter Comparison

Engineering Selection Recommendations

AD7871KPZ is the primary direct substitute for the AD7871KP. Both parts share identical electrical and mechanical specifications. The AD7871KPZ is currently in active production status, ensuring long-term availability and supply chain stability. This part is RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

AD7871JPZ is a parametric equivalent offering identical functional performance and package compatibility. This part is also in active production status with RoHS3 compliance and REACH unaffected status. Selection between AD7871KPZ and AD7871JPZ should be based on availability, lead time, and supplier preference, as both provide equivalent electrical and mechanical performance.

The obsolete status of the AD7871KP makes either active substitute essential for new designs or system maintenance requiring component replenishment.

Frequently Asked Questions (FAQ)

Q: Can AD7871KPZ and AD7871JPZ be used interchangeably with AD7871KP?

A: Yes. Both substitute parts meet all electrical and mechanical parameters of the AD7871KP, including resolution, sampling rate, supply voltages, input configuration, data interfaces, package type, and operating temperature range. Pin-to-pin compatibility and functional equivalence are maintained.

Q: What is the difference between AD7871KPZ and AD7871JPZ?

A: Both parts are parametric equivalents with identical electrical specifications and package configurations. The suffix designation (K vs. J) indicates different temperature grade classifications within Analog Devices' product line, but both operate across the 0°C to 70°C temperature range specified for this application.

Q: Are there any compliance or regulatory differences between the substitute parts?

A: Both AD7871KPZ and AD7871JPZ are RoHS3 compliant and REACH unaffected. The original AD7871KP does not specify these compliance statuses. The active substitutes meet current regulatory requirements for electronic component manufacturing and distribution.

Q: What packaging options are available for the substitutes?

A: Both AD7871KPZ and AD7871JPZ are supplied in Tube packaging. The 28-PLCC (11.51x11.51mm) surface mount package remains consistent across all three part numbers.

Q: Is the AD7871KP still available for purchase?

A: The AD7871KP is classified as obsolete. Current inventory availability is limited to existing stock (2,190 pieces reported). For new applications or long-term supply requirements, AD7871KPZ or AD7871JPZ are recommended as active production alternatives.