AD7891AP-1 Equivalent & Substitute Parts

Part Overview

The AD7891AP-1 is a 12-bit Data Acquisition System (DAS) with 8 channels, 500 kSPS sampling rate, and dual Serial/Parallel data interface. Designed for single 5V supply operation, this component integrates analog-to-digital conversion in a 44-PLCC surface mount package. The AD7891AP-1 is classified as obsolete, making equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

AD7891AP-1

Analog Devices Inc.In Stock: 1538AD7891AP-1 Datasheet

Current PartRFQ

AD7891APZ-1

Analog Devices Inc.In Stock: 1238AD7891APZ-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AD7891AP-1 is determined by strict equivalence across the following critical parameters:

• Resolution and Channel Configuration: 12-bit resolution with 8 channels
• Sampling Performance: 500 kSPS conversion rate
• Interface Compatibility: Dual Serial and Parallel data output capability
• Electrical Specifications: Single 5V supply operation
• Thermal Range: -40°C to +85°C operating temperature
• Physical Form Factor: 44-PLCC package with identical pin configuration
• Manufacturer Consistency: Analog Devices Inc. product line

The AD7891APZ-1 meets all substitution criteria as a direct functional equivalent with identical electrical and mechanical specifications. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The AD7891APZ-1 is the direct substitute for the obsolete AD7891AP-1. Both components share identical electrical performance, pin configuration, and mechanical specifications. The AD7891APZ-1 maintains active product status with current manufacturing support from Analog Devices Inc.

The AD7891APZ-1 provides additional compliance certifications: ROHS3 compliance and REACH unaffected status. These certifications support regulatory requirements in modern manufacturing and distribution environments. The tube packaging format of the AD7891APZ-1 is standard for active production components.

For applications requiring the AD7891AP-1, direct substitution with the AD7891APZ-1 is electrically and mechanically valid without design modification.

Frequently Asked Questions (FAQ)

Q: Can the AD7891APZ-1 replace the AD7891AP-1 in existing designs?

A: Yes. The AD7891APZ-1 is a direct substitute with identical pin configuration, electrical specifications, and package dimensions. No PCB redesign or firmware modification is required.

Q: What is the difference between AD7891AP-1 and AD7891APZ-1?

A: The primary differences are product status (obsolete vs. active) and packaging format. The AD7891APZ-1 is supplied in tube packaging and includes ROHS3 and REACH compliance certifications. All functional and electrical parameters are identical.

Q: Are there any compatibility concerns with the 44-PLCC package?

A: No. Both parts use the identical 44-PLCC (J-Lead) package with 16.59 x 16.59 mm dimensions. Pin assignments, spacing, and soldering requirements are equivalent.

Q: Does the AD7891APZ-1 support the same operating temperature range?

A: Yes. Both components operate across -40°C to +85°C, maintaining identical thermal performance specifications.

Q: What is the significance of MSL 3 (168 Hours) rating?

A: MSL 3 indicates Moisture Sensitivity Level 3, requiring storage in controlled humidity conditions with a floor life of 168 hours after package opening. Both parts share this specification.

Q: Is the AD7891APZ-1 compliant with modern regulatory standards?

A: The AD7891APZ-1 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for component distribution and use.