DAC8043UC Equivalent & Substitute Parts

Part Overview

The DAC8043UC is a 12-bit digital-to-analog converter manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This multiplying DAC with unbuffered current output operates on dual 5V supplies and features a 1µs settling time, making it suitable for precision analog signal generation applications. The part is currently active in production and ROHS3 compliant. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements.

Substiute Parts

DAC8043UC

Texas InstrumentsIn Stock: 1907DAC8043UC Datasheet

Current PartRFQ

LTC8043ES8#PBF

Analog Devices Inc.In Stock: 2269LTC8043ES8#PBF Datasheet

DirectRFQ

DAC8043AESZ

Analog Devices Inc.In Stock: 1166DAC8043AESZ Datasheet

MFR RecommendedRFQ

DAC8043AFSZ

Analog Devices Inc.In Stock: 1827DAC8043AFSZ Datasheet

MFR RecommendedRFQ

DAC8043AFSZ-REEL7

Analog Devices Inc.In Stock: 2028DAC8043AFSZ-REEL7 Datasheet

MFR RecommendedRFQ

LTC8043FS8#PBF

Analog Devices Inc.In Stock: 1715LTC8043FS8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DAC8043UC is determined by the following critical parameters: 12-bit resolution, single D/A converter, unbuffered current output, external reference requirement, 1µs settling time, dual 5V supply operation, 8-SOIC package footprint, surface mount configuration, and -40°C to 85°C operating temperature range.

The identified substitute parts maintain these core electrical and mechanical specifications. Variations in data interface protocol (Serial vs. SPI), architecture (Multiplying DAC vs. R-2R), INL/DNL tolerance (±0.5 LSB vs. ±1 LSB), and moisture sensitivity level do not preclude substitution when the primary functional requirements are met. Packaging format differences (Tube vs. Tape & Reel) represent logistics variations only and do not affect electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the DAC8043UC. Selection among substitutes should be based on the following criteria:

For applications requiring the lowest INL/DNL tolerance (±0.5 LSB maximum), LTC8043ES8#PBF and DAC8043AESZ are preferred. These parts offer tighter linearity specifications matching the original DAC8043UC performance envelope.

For applications where ±1 LSB INL/DNL tolerance is acceptable, DAC8043AFSZ, DAC8043AFSZ-REEL7, and LTC8043FS8#PBF provide equivalent functionality with broader tolerance bands. DAC8043AFSZ-REEL7 is specified for high-volume automated assembly requiring tape and reel packaging.

Data interface differences (Serial vs. SPI) require firmware or hardware interface verification. The DAC8043UC uses serial protocol, while Analog Devices substitutes employ SPI. Moisture sensitivity level (MSL) differences indicate that substitute parts with MSL 1 rating offer superior moisture resistance compared to the DAC8043UC MSL 3 rating, beneficial for extended storage or humid environments.

Frequently Asked Questions (FAQ)

Q: Can DAC8043AFSZ replace DAC8043UC directly without circuit modification?

A: Electrical substitution is valid. The 8-SOIC package footprint is identical, and all critical electrical parameters (12-bit resolution, 1µs settling time, 5V dual supply, unbuffered current output, external reference) are maintained. However, the data interface differs (Serial vs. SPI), requiring firmware or protocol adapter verification before implementation.

Q: What is the significance of INL/DNL tolerance differences?

A: INL/DNL specifications define integral and differential nonlinearity, directly affecting analog output accuracy. DAC8043UC and LTC8043ES8#PBF specify ±0.5 LSB maximum, while DAC8043AFSZ variants specify ±1 LSB maximum. Applications requiring higher precision should prioritize the tighter tolerance parts.

Q: Are Tape & Reel and Tube packaging electrically equivalent?

A: Yes. DAC8043AFSZ-REEL7 and DAC8043AFSZ are electrically identical; packaging format represents logistics and assembly process differences only. Tape & Reel format is optimized for high-volume automated pick-and-place assembly, while Tube format suits lower-volume or manual assembly workflows.

Q: How does MSL rating affect part selection?

A: Moisture Sensitivity Level (MSL) indicates maximum storage duration at specified humidity before reflow soldering. DAC8043UC carries MSL 3 (168 hours maximum), while all Analog Devices substitutes carry MSL 1 (unlimited storage). Lower MSL ratings provide greater flexibility for inventory management and extended shelf life.

Q: What are the architectural differences between Multiplying DAC and R-2R?

A: DAC8043UC employs Multiplying DAC architecture, while substitute parts use R-2R ladder networks. Both architectures achieve 12-bit resolution with 1µs settling time and external reference operation. Architectural differences do not affect functional compatibility for standard applications.

Q: Is cross-manufacturer substitution (Texas Instruments to Analog Devices) recommended?

A: Yes, when electrical and mechanical parameters align. All identified substitutes are manufactured by Analog Devices Inc. and maintain identical package footprints, supply voltages, temperature ranges, and core functionality. Substitution is valid for applications where data interface protocol compatibility is confirmed.