DAC712UG4 Equivalent & Substitute Parts

Part Overview

The DAC712UG4 is a 16-bit digital-to-analog converter manufactured by Texas Instruments, designed for voltage output applications in data acquisition systems. This component features a single D/A converter with internal reference, parallel data interface, and R-2R architecture. The DAC712UG4 is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing system support.

Substiute Parts

DAC712UG4

Texas InstrumentsIn Stock: 2135DAC712UG4 Datasheet

Current PartRFQ

DAC8734SRHAR

Texas InstrumentsIn Stock: 2354DAC8734SRHAR Datasheet

MFR RecommendedRFQ

DAC8734SRHAT

Texas InstrumentsIn Stock: 2230DAC8734SRHAT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The DAC8734SRHAR and DAC8734SRHAT are listed as manufacturer-recommended substitutes for the DAC712UG4. Substitution eligibility is determined by the following core parameters:

• Resolution: Both substitute parts maintain 16-bit resolution, matching the original specification
• Output Type: Voltage-buffered output preserved across all parts
• Architecture: R-2R topology maintained for consistent performance characteristics
• Compliance: All parts are ROHS3 compliant and REACH unaffected
• Manufacturer: All parts are Texas Instruments products

Substitution constraints exist due to differences in:

• Data Interface: DAC712UG4 uses parallel interface; substitutes use SPI interface
• Number of Converters: DAC712UG4 contains 1 converter; substitutes contain 4 converters
• Package: DAC712UG4 uses 28-SOIC; substitutes use 40-VQFN
• Reference Type: DAC712UG4 has internal reference; substitutes require external reference
• Supply Voltage: Different voltage specifications between original and substitutes

Parameter Comparison

Engineering Selection Recommendations

The DAC8734SRHAR and DAC8734SRHAT are active products from Texas Instruments, providing long-term availability and supply chain stability compared to the obsolete DAC712UG4. Both substitute parts exceed the linearity performance of the original component, with INL/DNL specifications of ±1 LSB versus ±8 LSB.

Selection between DAC8734SRHAR and DAC8734SRHAT should be based on application-specific requirements, as both parts share identical electrical specifications and differ only in packaging designation within the Tape & Reel format.

Implementation of either substitute requires design modifications to accommodate:

• SPI serial interface instead of parallel data input
• External reference voltage supply instead of internal reference
• 40-VQFN package instead of 28-SOIC footprint
• Four integrated D/A converters instead of single converter

All parts maintain ROHS3 compliance and are suitable for industrial temperature range applications.

Frequently Asked Questions (FAQ)

Q: Can DAC8734SRHAR or DAC8734SRHAT be used as direct pin-for-pin replacements for DAC712UG4?

A: No. The substitute parts use different package types (40-VQFN versus 28-SOIC), different data interfaces (SPI versus parallel), and different reference configurations (external versus internal). PCB redesign and firmware modifications are required.

Q: What is the primary reason for substitution?

A: The DAC712UG4 is classified as obsolete. The DAC8734SRHAR and DAC8734SRHAT are active products with guaranteed long-term availability from Texas Instruments.

Q: Are the substitute parts compatible with the same supply voltage?

A: No. The DAC712UG4 requires ±11.4V to ±16.5V analog supply. The DAC8734 series requires 4.75V to 24V for analog supply and 2.7V to 5.5V for digital supply. Power supply redesign is necessary.

Q: Do the substitute parts offer improved performance?

A: Yes. The DAC8734SRHAR and DAC8734SRHAT provide superior linearity with ±1 LSB INL/DNL specifications compared to ±8 LSB for the DAC712UG4. Operating temperature range is also extended to -40°C to 105°C.

Q: What is the difference between DAC8734SRHAR and DAC8734SRHAT?

A: Both parts have identical electrical specifications. The designation difference reflects packaging tape configuration within the Tape & Reel format. Selection should be based on assembly equipment compatibility.

Q: Is external reference design required for the substitute parts?

A: Yes. Unlike the DAC712UG4 with internal reference, the DAC8734 series requires an external reference voltage supply. Reference design and component selection must be included in the implementation.