AD7891BPZ-2 Equivalent & Substitute Parts

Part Overview

The AD7891BPZ-2 is a 12-bit Data Acquisition System (DAS) with 8 channels, 500 kSPS sampling rate, and dual Serial/Parallel data interface. This component operates on single 5V supply and is housed in a 44-PLCC package. The AD7891BPZ-2 is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and new design implementations.

Substiute Parts

AD7891BPZ-2

Analog Devices Inc.In Stock: 815AD7891BPZ-2 Datasheet

Current PartRFQ

AD7891APZ-2

Analog Devices Inc.In Stock: 973AD7891APZ-2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AD7891APZ-2 qualifies as a direct substitute for the AD7891BPZ-2 based on the following critical parameters:

• Identical resolution: 12 bits
• Identical channel count: 8 channels
• Identical sampling rate: 500 kSPS
• Identical data interface: Serial and Parallel
• Identical supply voltage: 5V single supply
• Identical operating temperature range: -40°C to 85°C
• Identical package: 44-PLCC (J-Lead)
• Identical mounting type: Surface Mount
• Identical MSL rating: 3 (168 Hours)

The primary distinction is product status: AD7891APZ-2 is active production, while AD7891BPZ-2 is obsolete. Both parts share the same base product number (AD7891) and are manufactured by Analog Devices Inc.

Parameter Comparison

Engineering Selection Recommendations

The AD7891APZ-2 is the direct functional equivalent for the obsolete AD7891BPZ-2. Selection of AD7891APZ-2 is supported by:

• Identical electrical specifications across all critical parameters
• Active production status ensuring long-term availability
• ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements
• Identical packaging and pinout, enabling direct board-level substitution
• Same manufacturer (Analog Devices Inc.) ensuring consistent quality and documentation

For applications currently using AD7891BPZ-2, transition to AD7891APZ-2 requires no circuit redesign or layout modification.

Frequently Asked Questions (FAQ)

Q: Can AD7891APZ-2 replace AD7891BPZ-2 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. Direct substitution is possible without circuit or PCB modifications.

Q: What is the difference between AD7891BPZ-2 and AD7891APZ-2?

A: The primary difference is product status. AD7891BPZ-2 is obsolete; AD7891APZ-2 is in active production. AD7891APZ-2 additionally carries ROHS3 compliance certification. All functional and electrical parameters are identical.

Q: Are the packages identical?

A: Yes. Both parts use 44-PLCC (J-Lead) surface mount packaging with identical pinout and mechanical dimensions (16.59x16.59 mm).

Q: What is the MSL rating, and does it affect substitution?

A: Both parts carry MSL 3 (168 Hours) rating. This indicates identical moisture sensitivity and handling requirements. No substitution impact.

Q: Is AD7891APZ-2 available in the same packaging options?

A: AD7891APZ-2 is supplied in Tube packaging. Verify packaging requirements for your procurement process.

Q: Are there compliance differences between the two parts?

A: AD7891APZ-2 carries ROHS3 compliance and REACH unaffected status. The original AD7891BPZ-2 compliance status is not specified. For new designs or regulated applications, AD7891APZ-2 is the recommended choice.