AD7228KP Equivalent & Substitute Parts

Part Overview

The AD7228KP is an 8-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc., designed for voltage output applications in data acquisition systems. This component features 8 parallel D/A converters with buffered voltage output, external reference capability, and R-2R architecture. The AD7228KP is classified as obsolete, making identification of compatible substitute parts essential for system redesign, legacy product support, and procurement continuity.

Substiute Parts

AD7228KP

Analog Devices Inc.In Stock: 2158AD7228KP Datasheet

Current PartRFQ

AD7228KPZ

Analog Devices Inc.In Stock: 2143AD7228KPZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD7228KP is determined by strict equivalence across the following critical parameters:

• Resolution & Architecture: 8-bit resolution with R-2R architecture
• Converter Count: 8 parallel D/A converters
• Output Configuration: Buffered voltage output with external reference
• Data Interface: Parallel digital input
• Electrical Specifications: Settling time (5µs, 7µs), INL/DNL (± 1 LSB Max), supply voltage ranges (analog: 10.8V ~ 16.5V, -5V; digital: 14.6V ~ 16.5V)
• Package Compatibility: 28-PLCC (11.51x11.51) surface mount package
• Temperature Range: -40°C ~ 85°C operating range

The AD7228KPZ qualifies as a direct substitute based on identical electrical specifications, package geometry, and functional parameters. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The AD7228KPZ is the direct equivalent substitute for the AD7228KP. Both components share identical electrical specifications, resolution, converter architecture, and package geometry. The AD7228KPZ is preferred for new designs and legacy system updates due to its active product status and compliance certifications. The AD7228KPZ carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. Packaging format differs (tube versus unspecified for the original), but electrical and mechanical compatibility is complete.

Frequently Asked Questions (FAQ)

Q: Can the AD7228KPZ directly replace the AD7228KP in existing designs?

A: Yes. Both components are electrically and mechanically identical across all specified parameters, including resolution, converter count, output type, supply voltages, settling time, and package geometry (28-PLCC 11.51x11.51). No circuit modifications are required.

Q: What is the primary reason to substitute the AD7228KP?

A: The AD7228KP is classified as obsolete. The AD7228KPZ is the active equivalent, ensuring long-term availability and compliance with current regulatory standards.

Q: Are there differences in compliance or certifications?

A: The AD7228KPZ includes ROHS3 compliance and REACH unaffected status. The AD7228KP specifications do not document these certifications. For applications requiring regulatory compliance, the AD7228KPZ is the appropriate selection.

Q: Does the packaging format affect compatibility?

A: The AD7228KPZ is supplied in tube packaging, while the AD7228KP packaging format is not specified. The physical component package (28-PLCC 11.51x11.51) and mounting type (surface mount) are identical, ensuring PCB-level compatibility.

Q: Are the electrical specifications identical?

A: Yes. Both parts share identical specifications for resolution (8-bit), converter count (8), output type (buffered voltage), settling time (5µs, 7µs), INL/DNL (± 1 LSB Max), and supply voltage ranges (analog: 10.8V ~ 16.5V, -5V; digital: 14.6V ~ 16.5V).