DAC7617U Equivalent & Substitute Parts

Part Overview

The DAC7617U is a 12-bit digital-to-analog converter manufactured by Texas Instruments, featuring 4 independent D/A converters in a 16-SOIC surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The DAC7617U provides voltage-buffered output with SPI data interface and external reference capability, suitable for precision analog signal generation in embedded systems and instrumentation.

Substiute Parts

DAC7617U

Texas InstrumentsIn Stock: 856DAC7617U Datasheet

Current PartRFQ

DAC7617UB

Texas InstrumentsIn Stock: 1115DAC7617UB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC7617U is based on strict equivalence of the following critical parameters:

• Resolution: 12-bit digital input
• Converter Count: 4 independent D/A converters
• Output Configuration: Voltage-buffered output
• Serial Interface: SPI protocol compatibility
• Package Type: 16-SOIC surface mount form factor
• Supply Voltage Ranges: 3V to 3.6V for both analog and digital supplies
• Temperature Operating Range: -40°C to 85°C
• Architecture: R-2R ladder network

The DAC7617UB qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is product status: DAC7617UB is active production, whereas DAC7617U is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The DAC7617UB is the direct substitute for DAC7617U applications. Selection is based on the following factors:

Product Status: DAC7617U is obsolete; DAC7617UB is in active production. For new designs and ongoing production, DAC7617UB ensures long-term component availability and supply chain continuity.

Compliance & Certifications: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and moisture sensitivity ratings. No compliance degradation occurs with substitution.

Electrical Performance: DAC7617UB demonstrates improved linearity specifications (INL/DNL ±1 Max vs. ±2/±1 Max), providing equal or superior performance in precision analog applications.

Mechanical & Thermal Compatibility: Identical 16-SOIC package, mounting type, and operating temperature range ensure direct board-level compatibility without layout or thermal management modifications.

Packaging Consideration: DAC7617UB is supplied in tube packaging, whereas DAC7617U packaging is unspecified. Verify tape-and-reel availability if automated assembly processes require specific packaging formats.

Frequently Asked Questions (FAQ)

Q: Can DAC7617UB directly replace DAC7617U in existing designs?

A: Yes. DAC7617UB is electrically and mechanically equivalent to DAC7617U. No circuit modifications, PCB layout changes, or firmware updates are required. Pin configuration, signal timing, and supply voltage requirements are identical.

Q: What is the primary reason for substitution?

A: DAC7617U is obsolete. DAC7617UB is the active production equivalent from Texas Instruments, ensuring component availability for current and future production runs.

Q: Are there differences in linearity performance?

A: DAC7617UB specifies ±1 LSB maximum for both INL and DNL, compared to DAC7617U's ±2 LSB INL specification. This represents improved or equivalent performance and does not restrict substitution.

Q: Does packaging differ between these parts?

A: DAC7617UB is supplied in tube packaging. DAC7617U packaging is not specified in available documentation. Confirm packaging requirements for your assembly process before procurement.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both DAC7617U and DAC7617UB are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for EU and global markets.

Q: What is the moisture sensitivity level?

A: Both parts carry MSL 3 rating with 168-hour floor life. Standard moisture control procedures during storage and assembly apply to both components.

Q: Is the SPI interface identical between parts?

A: Yes. Both parts implement SPI data interface with identical protocol, timing, and signal requirements. No firmware or driver modifications are necessary.