AD7870LP-REEL Equivalent & Substitute Parts

Part Overview

The AD7870LP-REEL is a 12-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. This component features a Successive Approximation Register (SAR) architecture with a 100 kHz sampling rate and operates with ±5V supply voltages for both analog and digital domains. The part is packaged in a 28-PLCC (11.51x11.51mm) surface mount configuration.

The AD7870LP-REEL is currently 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 ADC.

Substiute Parts

AD7870LP-REEL

Analog Devices Inc.In Stock: 888AD7870LP-REEL Datasheet

Current PartRFQ

AD7870LPZ

Analog Devices Inc.In Stock: 1065AD7870LPZ Datasheet

DirectRFQ

AD7870JPZ-REEL

Analog Devices Inc.In Stock: 883AD7870JPZ-REEL Datasheet

Parametric EquivalentRFQ

AD7870KPZ-REEL

Analog Devices Inc.In Stock: 1028AD7870KPZ-REEL Datasheet

Parametric EquivalentRFQ

AD7875KPZ-REEL

Analog Devices Inc.In Stock: 1145AD7875KPZ-REEL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD7870LP-REEL are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Core Electrical Parameters (Must Match):

• Resolution: 12 bits
• Sampling Rate: 100 kHz
• Number of Inputs: 1
• Input Type: Single Ended
• Architecture: SAR
• Data Interface: SPI, Parallel
• Reference Type: Internal
• Voltage - Supply, Analog: ±5V
• Voltage - Supply, Digital: ±5V
• Operating Temperature Range: 0°C to 70°C

Mechanical Parameters (Must Match):

• Package / Case: 28-LCC (J-Lead)
• Supplier Device Package: 28-PLCC (11.51x11.51mm)
• Mounting Type: Surface Mount

All identified substitute parts meet these criteria. Variations in packaging format (Tube vs. Tape & Reel), product status (Active vs. Obsolete), and compliance certifications (RoHS, REACH, MSL) do not affect functional equivalence but may impact procurement and application requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Functional Equivalents (Recommended Priority):

AD7870LPZ, AD7870JPZ-REEL, and AD7870KPZ-REEL are direct functional equivalents of the AD7870LP-REEL. All three parts are currently in Active product status, ensuring long-term availability and support. These parts carry RoHS3 compliance and REACH Unaffected status, meeting modern regulatory requirements. Selection among these three should be based on packaging format requirements: AD7870LPZ is supplied in Tube format, while AD7870JPZ-REEL and AD7870KPZ-REEL are supplied in Tape & Reel format suitable for automated assembly processes.

Alternative Equivalent:

AD7875KPZ-REEL is a parametric equivalent with identical electrical specifications and package configuration. This part is also in Active product status with RoHS3 compliance and REACH Unaffected status. The base product number differs (AD7875 vs. AD7870), but all core electrical and mechanical parameters match the original specification.

Compliance Considerations:

All substitute parts listed are RoHS3 compliant and REACH unaffected, making them suitable for applications requiring modern environmental compliance. Moisture Sensitivity Level (MSL) ratings for active parts are specified at MSL 3 (168 Hours), compared to MSL 1 (Unlimited) for the obsolete original part. This difference may require adjusted handling procedures during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can AD7870LPZ be used as a direct replacement for AD7870LP-REEL?

A: Yes. AD7870LPZ is electrically and mechanically equivalent. The primary difference is packaging format (Tube vs. Reel) and product status (Active vs. Obsolete). For manual assembly or low-volume applications, Tube packaging is acceptable. For automated high-volume production, Tape & Reel format may be preferred.

Q: What is the difference between AD7870JPZ-REEL, AD7870KPZ-REEL, and AD7875KPZ-REEL?

A: All three parts are parametric equivalents with identical electrical specifications and 28-PLCC package configuration. The primary differences are the base product numbers (AD7870 vs. AD7875) and individual part designations (J, K variants). All are supplied in Tape & Reel format and carry Active product status with RoHS3 compliance.

Q: Does the MSL rating difference affect substitution?

A: The original AD7870LP-REEL has MSL 1 (Unlimited), while substitute parts have MSL 3 (168 Hours). This indicates substitute parts require controlled moisture exposure during storage and assembly. Proper handling procedures must be implemented, including baking if parts are exposed to moisture beyond the 168-hour limit.

Q: Are all substitute parts suitable for new designs?

A: Yes. All substitute parts carry Active product status and modern compliance certifications (RoHS3, REACH Unaffected), making them suitable for new designs. The obsolete status of the original AD7870LP-REEL makes substitution necessary for ongoing production.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, provided the PCB footprint accommodates the 28-PLCC (11.51x11.51mm) package. All substitute parts use identical package geometry and pin configuration. No PCB redesign is required for functional substitution.