AD5544SRS-EP Equivalent & Substitute Parts

Part Overview

The AD5544SRS-EP is a 16-bit digital-to-analog converter (DAC) with four independent output channels, manufactured by Analog Devices Inc. This component features current-unbuffered outputs, SPI data interface, and external reference capability. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. The AD5544SRS-EP operates across industrial temperature ranges and is housed in a 28-SSOP surface-mount package.

Substiute Parts

AD5544SRS-EP

Analog Devices Inc.In Stock: 865AD5544SRS-EP Datasheet

Current PartRFQ

AD5544ARSZ

Analog Devices Inc.In Stock: 2649AD5544ARSZ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AD5544SRS-EP is determined by strict alignment of core electrical and mechanical parameters. The following criteria establish valid substitute relationships:

Critical Matching Parameters:

• Resolution: 16 bits
• Number of D/A Converters: 4 channels
• Output Type: Current - Unbuffered
• Data Interface: SPI
• Reference Type: External
• Supply Voltage Ranges: Analog 2.7V ~ 5.5V, Digital 2.7V ~ 5.5V
• Package Type: 28-SSOP
• Mounting Type: Surface Mount
• Architecture: R-2R

Allowable Variations:

• Settling Time: Equivalent or faster performance acceptable
• INL/DNL specifications: Within acceptable tolerance ranges for application requirements
• Operating Temperature: Minimum temperature may be relaxed; maximum must meet or exceed -55°C to 125°C range
• Product Status: Active status preferred for long-term availability

The AD5544ARSZ qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The AD5544ARSZ is a qualified substitute for the AD5544SRS-EP based on electrical and mechanical parameter alignment. Key selection considerations:

Advantages of AD5544ARSZ:

• Active product status ensures long-term availability and supply chain continuity
• RoHS3 compliance and REACH unaffected status provide regulatory alignment for current manufacturing standards
• Identical core functionality across all critical parameters

Operational Considerations:

• The AD5544ARSZ operates across -40°C to 125°C, compared to the AD5544SRS-EP range of -55°C to 125°C. Applications requiring operation below -40°C require the original part or alternative sourcing strategies.
• INL specification for AD5544ARSZ is ±2 LSB maximum versus ±1.5 LSB for AD5544SRS-EP. System designs dependent on tighter INL tolerance must account for this specification difference.
• Both parts share identical settling time, output architecture, and interface characteristics, ensuring functional compatibility in standard applications.

Frequently Asked Questions (FAQ)

Q: Can AD5544ARSZ directly replace AD5544SRS-EP in existing designs?

A: Yes, for applications operating within -40°C to 125°C temperature range. The parts are electrically and mechanically equivalent across all critical parameters including resolution, channel count, output type, data interface, and package configuration. Applications requiring operation below -40°C require design review.

Q: What is the significance of the INL specification difference?

A: The AD5544SRS-EP specifies ±1.5 LSB maximum INL, while AD5544ARSZ specifies ±2 LSB maximum INL. This represents a relaxation of approximately 0.33% of full-scale error. Applications with strict linearity requirements must evaluate whether this difference impacts system performance.

Q: Why is the AD5544SRS-EP classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The AD5544ARSZ, sharing the same base product number (AD5544) and core functionality, represents the active equivalent for ongoing procurement and new designs.

Q: Are there packaging differences between these parts?

A: Both parts use identical 28-SSOP surface-mount packaging with 0.209" width (5.30mm). PCB layout and assembly processes require no modification for substitution.

Q: What compliance certifications apply to each part?

A: The AD5544SRS-EP carries EAR99 export classification and HTSUS code 8542.39.0001. The AD5544ARSZ adds RoHS3 compliance and REACH unaffected status, aligning with current regulatory requirements for commercial and industrial applications.