AD5544ARS Equivalent & Substitute Parts

Part Overview

The AD5544ARS is a 16-bit Digital to Analog Converter (DAC) with 4 independent output channels, manufactured by Analog Devices Inc. in a 28-SSOP surface mount package. This component features current-unbuffered outputs, SPI data interface, and external reference capability, operating across a supply voltage range of 2.7V to 5.5V for both analog and digital domains.

The AD5544ARS is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support legacy system maintenance or redesign initiatives.

Substiute Parts

AD5544ARS

Analog Devices Inc.In Stock: 2211AD5544ARS Datasheet

Current PartRFQ

AD5544ARSZ

Analog Devices Inc.In Stock: 2649AD5544ARSZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD5544ARS is determined by strict equivalence across the following critical parameters:

• Resolution and Channel Count: 16-bit resolution with 4 independent D/A converters
• Output Characteristics: Current-unbuffered output topology
• Interface Protocol: SPI digital data interface
• Reference Architecture: External reference requirement
• Supply Voltage Compatibility: 2.7V to 5.5V dual supply operation
• Accuracy Specifications: INL/DNL performance of ±2 LSB (Max) and ±1.5 LSB (Max)
• Conversion Speed: 900ns typical settling time
• Package Compatibility: 28-SSOP surface mount package with identical 5.30mm width

The AD5544ARSZ qualifies as a direct substitute based on identical electrical specifications and package form factor. The primary distinction is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The AD5544ARSZ is the direct functional equivalent of the AD5544ARS. Both components share identical electrical specifications, pin configuration, and package geometry, ensuring drop-in compatibility at the circuit board level.

The AD5544ARSZ carries Active product status, providing access to current manufacturing support and supply chain availability. The component is ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements for new designs and system updates.

The AD5544ARS, classified as Obsolete, presents supply chain constraints for new procurement. Transition to the AD5544ARSZ is supported by equivalent performance specifications and identical package footprint, eliminating redesign requirements.

Note the difference in Moisture Sensitivity Level: AD5544ARS specifies MSL 1 (Unlimited), while AD5544ARSZ specifies MSL 3 (168 Hours). This affects storage and handling protocols but does not impact electrical performance or functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AD5544ARSZ replace the AD5544ARS in existing designs?

A: Yes. Both components are electrically identical across all specified parameters: 16-bit resolution, 4-channel configuration, 900ns settling time, SPI interface, external reference architecture, and identical supply voltage ranges. Package geometry and pin configuration are identical, enabling direct substitution without circuit modification.

Q: What is the primary difference between these two part numbers?

A: The AD5544ARS is classified as Obsolete, while the AD5544ARSZ is Active. The AD5544ARSZ includes ROHS3 compliance certification and is supplied in Tube packaging. The MSL rating differs: AD5544ARS is MSL 1 (Unlimited), and AD5544ARSZ is MSL 3 (168 Hours).

Q: Does the MSL difference affect circuit performance?

A: No. Moisture Sensitivity Level (MSL) is a handling and storage specification, not an electrical performance parameter. MSL 3 (168 Hours) indicates the component requires controlled humidity storage and has a 168-hour floor life after moisture exposure. This does not alter the component's electrical characteristics or functional operation.

Q: Are there any pin or footprint differences?

A: No. Both components use the 28-SSOP package with identical 0.209" (5.30mm) width and pin configuration. PCB footprints are identical, and no layout modifications are required for substitution.

Q: Which part should be selected for new designs?

A: The AD5544ARSZ is the appropriate selection for new designs. It carries Active product status, ensuring long-term availability and manufacturing support. ROHS3 compliance aligns with current environmental standards for commercial and industrial applications.