DAC5681IRGC25 Equivalent & Substitute Parts

Part Overview

The DAC5681IRGC25 is a 16-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for data acquisition applications. This component features a single unbuffered current output with differential capability, operating across analog supply voltages of 3V to 3.6V and digital supply voltages of 1.71V to 2.15V. The device is packaged in a 64-VQFN (9x9) surface-mount configuration with an exposed pad.

The DAC5681IRGC25 is classified as obsolete. Locating equivalent or substitute parts is necessary to support legacy system maintenance, design revisions, or when original inventory becomes unavailable. Active alternatives with identical or compatible electrical and mechanical specifications are available from the same manufacturer.

Substiute Parts

DAC5681IRGC25

Texas InstrumentsIn Stock: 972DAC5681IRGC25 Datasheet

Current PartRFQ

DAC5681ZIRGCR

Texas InstrumentsIn Stock: 40217DAC5681ZIRGCR Datasheet

MFR RecommendedRFQ

DAC5681IRGCR

Texas InstrumentsIn Stock: 1364DAC5681IRGCR Datasheet

Parametric EquivalentRFQ

DAC5681IRGCT

Texas InstrumentsIn Stock: 1626DAC5681IRGCT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC5681IRGC25 is determined by strict equivalence across the following critical parameters:

• Resolution & Architecture: 16-bit resolution, single D/A converter, current sink architecture
• Output Characteristics: Unbuffered current output with differential capability
• Interface: LVDS parallel data interface
• Supply Voltage Ranges: Analog supply 3V to 3.6V; digital supply compatibility
• Timing Performance: 10.4 ns typical settling time
• Accuracy: INL/DNL specifications of ±4 and ±2 LSB
• Package: 64-VQFN (9x9) surface-mount with exposed pad
• Environmental & Compliance: Operating temperature -40°C to 85°C, ROHS3 compliance, MSL 3

Substitute parts must maintain identical electrical performance and mechanical compatibility. Differences in product status (obsolete vs. active) and packaging format (tube vs. tape & reel) do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

DAC5681ZIRGCR (MFR Recommended Substitute)

This part is designated as the manufacturer-recommended substitute. It maintains full electrical equivalence with the DAC5681IRGC25 across all critical parameters. The digital supply voltage range (1.7V to 1.9V) is narrower than the original specification (1.71V to 2.15V) but remains compatible with standard 1.8V digital supply systems. This part carries active product status and is available in tape & reel packaging, supporting high-volume production environments. ROHS3 compliance and MSL 3 rating are maintained.

DAC5681IRGCR (Parametric Equivalent)

This part provides complete parametric equivalence to the DAC5681IRGC25, including identical digital supply voltage range (1.71V to 2.15V). Active product status ensures long-term availability and manufacturing support. All electrical and mechanical specifications align precisely with the original component.

DAC5681IRGCT (Parametric Equivalent)

This part is functionally equivalent to the DAC5681IRGC25 with identical electrical specifications and digital supply voltage range (1.71V to 2.15V). Active product status and full compliance certifications apply. The primary distinction is packaging format, which does not affect functional performance.

All three substitute parts satisfy the core substitution criteria: identical 16-bit resolution, single D/A converter architecture, unbuffered current output with differential capability, LVDS parallel interface, matching supply voltage compatibility, equivalent settling time, and identical package configuration. Selection among these alternatives should be based on packaging availability (tube vs. tape & reel), supply voltage margin requirements, and inventory lead times.

Frequently Asked Questions (FAQ)

Q: Can DAC5681ZIRGCR replace DAC5681IRGC25 in all applications?

A: Yes, DAC5681ZIRGCR is the manufacturer-recommended substitute and maintains full electrical equivalence. The narrower digital supply voltage range (1.7V to 1.9V) is compatible with standard 1.8V digital supply systems. Applications requiring the full 1.71V to 2.15V range should use DAC5681IRGCR or DAC5681IRGCT instead.

Q: What is the difference between the three substitute parts?

A: All three substitutes (DAC5681ZIRGCR, DAC5681IRGCR, DAC5681IRGCT) are electrically identical to the original DAC5681IRGC25. Differences are limited to product status (all active), packaging format (tape & reel vs. tube), and digital supply voltage range specifications. DAC5681ZIRGCR is the manufacturer-recommended option.

Q: Are the substitute parts pin-compatible with the original DAC5681IRGC25?

A: Yes. All substitute parts use the identical 64-VQFN (9x9) surface-mount package with exposed pad. Pin configuration, footprint, and mechanical dimensions are unchanged.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. All substitute parts maintain ROHS3 compliance, MSL 3 rating (168 hours), and identical environmental operating temperature range (-40°C to 85°C). Regulatory classifications (ECCN, HTSUS) are equivalent.

Q: Why is the DAC5681IRGC25 marked as obsolete?

A: The DAC5681IRGC25 has reached end-of-life status. Active alternatives with identical specifications are available to support ongoing system requirements and design continuity.

Q: Can I mix DAC5681IRGC25 and substitute parts in the same production run?

A: Electrical performance is identical across all parts. However, verify packaging and supply chain requirements with your procurement team, as the original part is obsolete and substitute parts may have different lead times and availability.