DAC712UK Equivalent & Substitute Parts

Part Overview

The DAC712UK 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 an internal reference, parallel data interface, and R-2R architecture. The DAC712UK is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is housed in a 28-SOIC surface mount package and operates across a temperature range of 0°C to 70°C.

Substiute Parts

DAC712UK

Texas InstrumentsIn Stock: 1536DAC712UK 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

Substitution of the DAC712UK is based on the following core electrical and mechanical parameters:

• Resolution: 16-bit resolution maintained across all substitute parts
• Output Configuration: Voltage-buffered output type preserved
• Architecture: R-2R topology maintained for consistent performance characteristics
• Compliance: ROHS3 compliance and EAR99 classification consistent across all parts
• Functional Capability: All substitute parts support 16-bit digital-to-analog conversion

The substitute parts identified (DAC8734SRHAR and DAC8734SRHAT) share the same 16-bit resolution, R-2R architecture, and voltage-buffered output type. However, these substitutes introduce design changes including multiple D/A converters (4 channels), external reference requirement, and different package format (40-VQFN). These differences require circuit redesign and are not pin-compatible replacements.

Parameter Comparison

Engineering Selection Recommendations

The DAC712UK is obsolete and no longer in active production. The identified substitute parts, DAC8734SRHAR and DAC8734SRHAT, are active products from Texas Instruments with extended product lifecycle support.

Both substitute parts maintain 16-bit resolution and R-2R architecture, ensuring equivalent conversion accuracy and performance characteristics. The DAC8734 series offers improved specifications including lower INL/DNL (±1 LSB maximum versus ±2 LSB), faster settling time (8µs typical versus 10µs), and extended operating temperature range (-40°C to 105°C versus 0°C to 70°C).

All parts maintain ROHS3 compliance and EAR99 classification. The substitute parts feature improved moisture sensitivity ratings (MSL 2 versus MSL 3), providing better reliability in storage and handling.

Design integration requires accommodation of the following differences: parallel-to-SPI interface conversion, external reference implementation, package transition from 28-SOIC to 40-VQFN, and multi-channel architecture (4 converters versus 1 converter).

Frequently Asked Questions (FAQ)

Q: Can DAC8734SRHAR or DAC8734SRHAT be used as direct pin-compatible replacements for DAC712UK?

A: No. While both substitute parts maintain 16-bit resolution and R-2R architecture, they are not pin-compatible. The DAC712UK uses a 28-SOIC package with parallel data interface, while the DAC8734 series uses a 40-VQFN package with SPI interface. Circuit redesign is required.

Q: What are the key electrical differences between DAC712UK and the substitute parts?

A: The primary differences are data interface (parallel versus SPI), reference implementation (internal versus external), and converter count (1 versus 4). The substitute parts offer improved linearity (±1 LSB versus ±2 LSB) and faster settling time (8µs typical versus 10µs).

Q: Are the substitute parts suitable for applications requiring the original operating temperature range of 0°C to 70°C?

A: Yes. The DAC8734SRHAR and DAC8734SRHAT operate across -40°C to 105°C, which encompasses the original 0°C to 70°C range. Extended temperature capability provides additional design margin.

Q: What compliance certifications apply to all parts in this comparison?

A: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. HTSUS classification is 8542.39.0001 across all parts.

Q: How do the packaging differences affect implementation?

A: The DAC712UK uses 28-SOIC surface mount packaging, while DAC8734SRHAR and DAC8734SRHAT use 40-VQFN (6x6) surface mount packaging. The VQFN package is smaller in footprint but requires updated PCB layout and assembly processes. Both are surface mount technologies suitable for automated assembly.