DAC8581IPW Equivalent & Substitute Parts

Part Overview

The DAC8581IPW is a 16-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring voltage output conversion. This device features a single D/A converter with external reference capability and SPI data interface, operating across a wide temperature range of -40°C to 85°C.

The DAC8581IPW carries a "Not For New Designs" product status, indicating that Texas Instruments has discontinued active development for this component. Organizations requiring equivalent functionality for new designs or replacement applications must evaluate suitable substitute components that maintain compatibility with existing system requirements.

Substiute Parts

DAC8581IPW

Texas InstrumentsIn Stock: 65835DAC8581IPW Datasheet

Current PartRFQ

DAC8811ICDGKT

Texas InstrumentsIn Stock: 1261DAC8811ICDGKT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC8581IPW is determined by the following critical parameters:

• Resolution: 16-bit conversion capability
• Converter Count: Single D/A converter configuration
• Data Interface: SPI serial communication protocol
• Reference Architecture: External reference requirement
• Operating Temperature Range: -40°C to 85°C industrial specification
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The DAC8811ICDGKT qualifies as a manufacturer-recommended substitute based on matching resolution (16-bit), converter count (1), data interface (SPI), reference type (external), operating temperature range (-40°C to 85°C), and regulatory compliance (ROHS3, REACH unaffected). However, critical differences exist in output type, package configuration, and electrical specifications that must be evaluated for system compatibility.

Parameter Comparison

Engineering Selection Recommendations

The DAC8811ICDGKT is the manufacturer-recommended substitute for the DAC8581IPW and maintains active product status with Texas Instruments. Both components achieve ROHS3 compliance and REACH unaffected regulatory standing, suitable for industrial applications.

Selection between these components depends on system-level requirements:

Choose DAC8811ICDGKT when:

• Current output architecture is acceptable or preferred
• Faster settling time (500ns) meets application timing requirements
• Lower analog supply voltage range (2.7V minimum) is compatible with system design
• Smaller package footprint (8-VSSOP) provides PCB layout advantages
• Active product support and availability are priorities

Retain DAC8581IPW when:

• Voltage output buffering is mandatory for signal conditioning
• Superior linearity specifications (±0.25 LSB DNL) are required
• Lower digital supply voltage operation (1.8V minimum) is necessary
• Unlimited moisture sensitivity rating is required for storage conditions
• Existing PCB layout and 16-TSSOP package footprint cannot be modified

Frequently Asked Questions (FAQ)

Q: Can the DAC8811ICDGKT directly replace the DAC8581IPW without circuit modifications?

A: No. While both devices share 16-bit resolution, SPI interface, and external reference architecture, the DAC8811ICDGKT outputs current rather than buffered voltage. Systems designed for voltage output require output stage redesign, including transimpedance amplifier configuration or external buffering. Additionally, package differences (16-TSSOP versus 8-VSSOP) necessitate PCB layout changes.

Q: What are the key electrical differences between these components?

A: The DAC8581IPW provides buffered voltage output with ±0.25 LSB DNL linearity and supports analog supply of ±5V with digital supply as low as 1.8V. The DAC8811ICDGKT provides unbuffered current output with ±1 LSB INL/DNL specifications, requires minimum 2.7V digital supply, and achieves faster settling time (500ns versus 1µs). These differences affect signal conditioning requirements and power supply design.

Q: Are there compatibility concerns with moisture sensitivity levels?

A: Yes. The DAC8581IPW carries MSL 1 (unlimited storage), while the DAC8811ICDGKT carries MSL 2 (1-year storage limit). Organizations with extended component storage requirements or high-humidity environments should account for the DAC8811ICDGKT's moisture sensitivity in handling and storage procedures.

Q: Do both components support the same operating temperature range?

A: Yes. Both the DAC8581IPW and DAC8811ICDGKT operate across -40°C to 85°C, meeting industrial temperature specifications. This parameter does not differentiate substitution suitability.

Q: What is the significance of the DAC8581IPW "Not For New Designs" status?

A: This status indicates Texas Instruments has concluded active development and marketing for the DAC8581IPW. While existing inventory remains available, the manufacturer recommends the DAC8811ICDGKT for new product development. Organizations designing new systems should evaluate the DAC8811ICDGKT as the primary component selection.