DAC8580IPWG4 Equivalent & Substitute Parts

Part Overview

The DAC8580IPWG4 is a 16-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for data acquisition applications requiring voltage output conversion. This device features a single DAC channel with buffered voltage output, SPI interface, and external reference capability. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing production and maintenance applications.

Substiute Parts

DAC8580IPWG4

Texas InstrumentsIn Stock: 961DAC8580IPWG4 Datasheet

Current PartRFQ

DAC8580IPW

Texas InstrumentsIn Stock: 65992DAC8580IPW Datasheet

MFR RecommendedRFQ

DAC8811ICDGKT

Texas InstrumentsIn Stock: 1261DAC8811ICDGKT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DAC8580IPWG4 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Resolution: 16-bit digital-to-analog conversion capability
• Output Configuration: Voltage output with buffering capability
• Interface Protocol: SPI digital communication
• Supply Voltage Ranges: Analog and digital supply compatibility
• Package Compatibility: Surface mount form factor suitable for PCB integration
• Linearity Specifications: INL/DNL performance within acceptable tolerances
• Temperature Range: Operating specifications matching -40°C to 85°C

Substitute Classification:

Direct Equivalent (Same Package, Same Output Type):

• DAC8580IPW: Identical electrical specifications and 16-TSSOP package, differing only in packaging format (Tube vs. original specification)

Functional Alternative (Different Package, Different Output Type):

• DAC8811ICDGKT: 16-bit DAC with SPI interface and external reference, but with current output (unbuffered) instead of voltage output, packaged in 8-VSSOP form factor. This substitute requires circuit redesign to accommodate current-to-voltage conversion.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): DAC8580IPW is the primary substitute for DAC8580IPWG4. Both devices share identical electrical specifications, architecture, and package form factor. The only distinction is packaging format (Tube vs. original). This substitute maintains full compatibility with existing PCB designs and firmware implementations. The part carries ROHS3 compliance and MSL-1 rating, matching the original specification. However, the product status is listed as "Not For New Designs," indicating limited long-term availability.

For Functional Alternative (Circuit Redesign Required): DAC8811ICDGKT provides 16-bit resolution with SPI interface and external reference capability. This device is currently Active in production status, offering superior long-term availability. However, substitution requires circuit modification due to fundamental differences: current output (unbuffered) versus voltage output (buffered), reduced supply voltage range (2.7V ~ 5.5V versus ±4V ~ 6V), lower linearity performance (±1 LSB INL/DNL versus ±0.25 LSB), and different package form factor (8-VSSOP versus 16-TSSOP). The DAC8811ICDGKT requires external transimpedance amplifier circuitry to convert current output to voltage output, increasing bill of materials and PCB complexity.

Frequently Asked Questions (FAQ)

Q: Can DAC8580IPW be used as a direct replacement for DAC8580IPWG4? A: Yes. DAC8580IPW is electrically and functionally identical to DAC8580IPWG4. Both devices feature 16-bit resolution, buffered voltage output, SPI interface, and 16-TSSOP packaging. The difference is packaging format only (Tube versus original specification). No circuit modifications are required.

Q: What are the key differences between DAC8580IPW and DAC8811ICDGKT? A: The primary differences are output type (voltage-buffered versus current-unbuffered), package size (16-TSSOP versus 8-VSSOP), supply voltage range (±4V ~ 6V versus 2.7V ~ 5.5V), linearity performance (±0.25 LSB versus ±1 LSB INL/DNL), and settling time (650ns versus 500ns typical). DAC8811ICDGKT requires external amplification circuitry to convert current output to voltage output.

Q: Is DAC8811ICDGKT suitable for applications requiring buffered voltage output? A: DAC8811ICDGKT provides unbuffered current output, not buffered voltage output. Applications requiring buffered voltage output must include external transimpedance amplifier circuitry. This increases design complexity and component count compared to the DAC8580 series.

Q: What is the impact of different supply voltage ranges on substitution? A: DAC8580IPWG4 and DAC8580IPW support ±4V ~ 6V analog supply and 1.8V ~ 6V digital supply. DAC8811ICDGKT supports 2.7V ~ 5.5V for both analog and digital supplies. Systems designed for ±4V analog supply cannot use DAC8811ICDGKT without power supply redesign.

Q: How do linearity specifications affect component selection? A: DAC8580IPWG4 specifies ±0.25 LSB DNL, while DAC8811ICDGKT specifies ±1 LSB INL/DNL. Applications requiring higher precision and lower distortion should prioritize DAC8580 series devices. DAC8811ICDGKT is suitable for applications with relaxed linearity requirements.

Q: What are the packaging and handling considerations for these devices? A: DAC8580IPWG4 and DAC8580IPW carry MSL-1 (Unlimited) moisture sensitivity rating, allowing indefinite shelf storage without baking. DAC8811ICDGKT carries MSL-2 (1 Year) rating, requiring moisture control and potential baking before reflow soldering if storage exceeds one year. All devices are surface mount components in TSSOP or VSSOP packages.

Q: Are all substitute parts RoHS compliant? A: Yes. DAC8580IPWG4, DAC8580IPW, and DAC8811ICDGKT are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.