DAC1220EG4 Equivalent & Substitute Parts

Part Overview

The DAC1220EG4 is a 20-bit digital-to-analog converter manufactured by Texas Instruments, designed for precision voltage output applications in data acquisition systems. This component features a single D/A converter with SPI interface, external reference capability, and sigma-delta architecture. The DAC1220EG4 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

DAC1220EG4

Texas InstrumentsIn Stock: 1694DAC1220EG4 Datasheet

Current PartRFQ

DAC1220E

Texas InstrumentsIn Stock: 29221DAC1220E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DAC1220EG4 is determined by strict equivalence across the following critical parameters:

• Resolution: 20-bit digital-to-analog conversion capability
• Converter Count: Single D/A converter configuration
• Settling Time: 2ms maximum settling time specification
• Output Configuration: Voltage output, unbuffered topology
• Interface Protocol: SPI serial data interface
• Reference Architecture: External reference input requirement
• Supply Voltages: 5V analog and 5V digital supply rails
• Converter Architecture: Sigma-delta modulation topology
• Temperature Range: -40°C to 85°C industrial operating range
• Package Format: 16-SSOP surface mount package with 0.154" width
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The DAC1220E qualifies as a direct substitute based on identical electrical specifications, package geometry, and functional architecture. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The DAC1220E is the direct functional equivalent of the DAC1220EG4 and serves as the primary substitute for new designs and component replacement applications. Both parts maintain identical electrical specifications, package geometry, and regulatory compliance certifications. The DAC1220E is currently in active production status with significantly higher inventory availability, making it the preferred selection for ongoing procurement requirements. Both components satisfy ROHS3 compliance and REACH regulatory requirements for industrial applications within the specified -40°C to 85°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the DAC1220E directly replace the DAC1220EG4 in existing designs?

A: Yes. The DAC1220E provides identical electrical performance, pin configuration, and package dimensions. No circuit modifications are required for direct substitution.

Q: What is the significance of the packaging difference between DAC1220EG4 and DAC1220E?

A: The DAC1220EG4 uses unspecified packaging while the DAC1220E is supplied in tube format. Both components use the same 16-SSOP physical package. The packaging format affects handling and storage procedures but does not impact electrical compatibility or performance.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both the DAC1220EG4 and DAC1220E maintain identical ROHS3 compliance status and REACH unaffected designation. Moisture sensitivity level (MSL 2, 1 Year) is equivalent across both components.

Q: Why is the DAC1220E recommended over the DAC1220EG4?

A: The DAC1220EG4 is discontinued at DiGi Electronics, while the DAC1220E maintains active production status with substantially higher inventory availability (29,200 units versus 1,600 units). For new procurement and long-term supply chain stability, the DAC1220E is the appropriate selection.

Q: What are the critical parameters that define substitution eligibility for this DAC family?

A: Substitution requires matching resolution (20-bit), converter count (1), settling time (2ms), output type (voltage unbuffered), interface protocol (SPI), reference type (external), supply voltages (5V analog and digital), architecture (sigma-delta), temperature range (-40°C to 85°C), and package format (16-SSOP).