AD7249AR Equivalent & Substitute Parts

Part Overview

The AD7249AR is a 12-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc., featuring dual D/A converters in a 16-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs or component replacement in legacy systems. The AD7249AR operates with external or internal voltage references, supports SPI data interface, and delivers buffered voltage outputs suitable for precision analog signal generation applications.

Substiute Parts

AD7249AR

Analog Devices Inc.In Stock: 5305AD7249AR Datasheet

Current PartRFQ

AD7249ARZ

Analog Devices Inc.In Stock: 6985AD7249ARZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD7249AR is determined by strict equivalence across the following critical parameters:

• Resolution and Converter Count: 12-bit resolution with 2 independent D/A converters
• Output Configuration: Buffered voltage output with no differential output requirement
• Interface Protocol: SPI digital data interface
• Reference Architecture: Support for both external and internal voltage references
• Analog Supply Range: ±10.8V ~ 16.5V compatibility
• Linearity Specifications: INL/DNL performance of ±1 LSB (Max) and ±0.9 LSB (Max)
• Settling Time: 10µs maximum settling time
• Package Compatibility: 16-SOIC surface mount package with identical pinout and mechanical dimensions
• Temperature Range: -40°C ~ 85°C operating specification

The AD7249ARZ qualifies as a direct substitute based on identical electrical specifications, package configuration, and functional architecture.

Parameter Comparison

Engineering Selection Recommendations

The AD7249ARZ is the direct functional equivalent of the AD7249AR. Both components share identical electrical specifications, pinout, and package configuration, enabling direct substitution in circuit designs.

Product Status Consideration: The AD7249AR is classified as obsolete, while the AD7249ARZ maintains active product status. For new designs or long-term production requirements, the AD7249ARZ is the appropriate selection.

Compliance Advantage: The AD7249ARZ carries ROHS3 compliance and REACH unaffected status, providing regulatory alignment for applications subject to environmental and hazardous substance restrictions. The AD7249AR compliance status is not specified in available documentation.

Packaging: The AD7249ARZ is supplied in tube packaging, whereas the AD7249AR packaging specification is not detailed. Both components utilize identical 16-SOIC surface mount packages with no mechanical or electrical differences.

Frequently Asked Questions (FAQ)

Q: Can the AD7249ARZ replace the AD7249AR in existing designs?

A: Yes. The AD7249ARZ is electrically and mechanically identical to the AD7249AR. All electrical parameters, pinout, package dimensions, and functional specifications match exactly. Direct substitution is possible without circuit modification.

Q: What is the primary reason to transition from AD7249AR to AD7249ARZ?

A: The AD7249AR is obsolete, while the AD7249ARZ maintains active production status. For component availability and long-term supply chain reliability, the AD7249ARZ is the recommended selection.

Q: Are there compliance differences between these parts?

A: The AD7249ARZ is certified ROHS3 compliant and REACH unaffected. The AD7249AR compliance status is not specified. Applications requiring environmental compliance should use the AD7249ARZ.

Q: Do these parts require different PCB layouts or footprints?

A: No. Both components use the 16-SOIC package with identical pinout and mechanical dimensions. PCB layouts and footprints are interchangeable.

Q: What are the critical parameters for DAC substitution in this category?

A: Resolution (12-bit), converter count (2), output type (buffered voltage), interface (SPI), reference support (external/internal), supply voltage range (±10.8V ~ 16.5V), linearity (±1/±0.9 LSB), settling time (10µs), and package (16-SOIC) must all match for functional equivalence.

Q: Is the settling time specification critical for substitution?

A: Yes. The 10µs settling time is a key performance parameter. Any substitute must meet or exceed this specification to ensure equivalent signal acquisition performance in time-critical applications.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Both components operate across the -40°C ~ 85°C temperature range. Applications requiring operation beyond this range require alternative components with extended temperature specifications.