DAC902UG4 Equivalent & Substitute Parts

Part Overview

The DAC902UG4 is a 12-bit digital-to-analog converter manufactured by Texas Instruments, part of the SpeedPlus™ series. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The DAC902UG4 provides current-unbuffered output with parallel data interface, supporting both external and internal reference configurations across a 2.7V to 5.5V supply range. Surface mount packaging in 28-SOIC form factor enables integration into modern PCB designs.

Substiute Parts

DAC902UG4

Texas InstrumentsIn Stock: 1063DAC902UG4 Datasheet

Current PartRFQ

DAC902U

Texas InstrumentsIn Stock: 2590DAC902U Datasheet

Parametric EquivalentRFQ

AD9762AR

Analog Devices Inc.In Stock: 8181AD9762AR Datasheet

MFR RecommendedRFQ

AD9762ARZ

Analog Devices Inc.In Stock: 2308AD9762ARZ Datasheet

MFR RecommendedRFQ

AD9762ARZRL

Analog Devices Inc.In Stock: 875AD9762ARZRL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DAC902UG4 is determined by strict parameter matching across core electrical and mechanical specifications. All substitute parts must maintain identical resolution (12-bit), output architecture (current-unbuffered with differential output), data interface (parallel), supply voltage ranges (2.7V ~ 5.5V for both analog and digital), operating temperature range (-40°C ~ 85°C), and physical package form factor (28-SOIC surface mount).

The substitute parts are grouped into two categories:

Parametric Equivalent (Same Manufacturer): DAC902U maintains full parameter compatibility with the DAC902UG4, differing only in product status (active versus obsolete) and packaging format (tube versus unspecified). This part is the direct functional replacement from Texas Instruments.

Manufacturer Recommended Alternatives (Cross-Manufacturer): AD9762AR, AD9762ARZ, and AD9762ARZRL are Analog Devices Inc. equivalents that satisfy all core electrical parameters. These parts operate within identical supply voltage ranges, support the same reference types, and maintain the same package geometry. Minor variations in settling time (35ns typical versus 30ns) and DNL specification (±0.75 LSB versus ±0.5 LSB) fall within acceptable tolerance for most applications requiring 12-bit DAC functionality. Packaging variants (tube and tape & reel) accommodate different procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: DAC902U is the preferred substitute for DAC902UG4 applications. Both parts are manufactured by Texas Instruments within the same SpeedPlus™ series, ensuring design continuity and compatibility. DAC902U maintains active product status with full availability, eliminating obsolescence risk. Electrical specifications are identical, including 30ns settling time and ±0.5 LSB DNL performance. The primary distinction is packaging format (tube), which accommodates standard component handling and assembly processes.

Secondary Recommendation: AD9762AR and AD9762ARZ are viable cross-manufacturer alternatives from Analog Devices Inc. These parts satisfy all core electrical requirements and maintain identical supply voltage ranges and operating temperature specifications. The settling time increase to 35ns and DNL specification of ±0.75 LSB represent minor performance variations acceptable for applications where the original 30ns/±0.5 LSB specifications are not critical design constraints. Both parts carry active product status and improved moisture sensitivity ratings (MSL 1 versus MSL 2), providing enhanced reliability in storage and assembly environments.

Packaging Consideration: AD9762ARZRL is the tape & reel variant of AD9762ARZ, suitable for high-volume automated assembly operations. Selection between tube and tape & reel packaging depends on procurement volume and assembly workflow requirements.

Compliance Status: All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original DAC902UG4 specification.

Frequently Asked Questions (FAQ)

Q: Can DAC902U directly replace DAC902UG4 in existing designs?

A: Yes. DAC902U is a parametric equivalent with identical electrical specifications, including 12-bit resolution, 30ns settling time, current-unbuffered output with differential configuration, and 28-SOIC surface mount packaging. The only difference is product status (active versus obsolete) and packaging format (tube). No circuit modifications are required.

Q: What are the performance differences between DAC902UG4 and AD9762AR?

A: The primary differences are settling time (35ns versus 30ns) and DNL specification (±0.75 LSB versus ±0.5 LSB). Both parts maintain identical 12-bit resolution, current-unbuffered output architecture, parallel data interface, and 2.7V to 5.5V supply voltage ranges. The AD9762AR is suitable for applications where the slightly relaxed performance specifications are acceptable.

Q: Are the Analog Devices AD9762 variants pin-compatible with DAC902UG4?

A: Yes. All substitute parts use identical 28-SOIC package geometry with matching pin assignments for parallel data interface, supply connections, and output configuration. Physical and electrical pin compatibility is maintained across all listed substitutes.

Q: What is the significance of MSL rating differences?

A: DAC902U and DAC902UG4 carry MSL 2 (1 Year) ratings, while AD9762 variants carry MSL 1 (Unlimited). MSL 1 indicates superior moisture resistance and longer shelf life without baking requirements. For applications with extended storage periods or high-humidity environments, AD9762 variants provide enhanced reliability.

Q: Should I select tube or tape & reel packaging?

A: Tube packaging (DAC902U, AD9762AR, AD9762ARZ) is standard for manual handling and small-to-medium volume assembly. Tape & reel packaging (AD9762ARZRL) is optimized for automated high-volume pick-and-place assembly. Selection depends on production volume and assembly equipment capabilities.

Q: Are all substitutes ROHS3 compliant?

A: Yes. DAC902U, AD9762AR, AD9762ARZ, and AD9762ARZRL are all ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original DAC902UG4 specification.