DAC7634EBG4 Equivalent & Substitute Parts

Part Overview

The DAC7634EBG4 is a 16-bit digital-to-analog converter (DAC) manufactured by Texas Instruments, featuring four independent D/A conversion channels with voltage-buffered outputs. This component is designed for applications requiring precision analog signal generation from digital control signals. The DAC7634EBG4 is currently discontinued at DiGi Electronics, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

DAC7634EBG4

Texas InstrumentsIn Stock: 763DAC7634EBG4 Datasheet

Current PartRFQ

DAC7634EB

Texas InstrumentsIn Stock: 1590DAC7634EB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC7634EBG4 is determined by strict equivalence across the following critical parameters:

• Resolution and Channel Count: 16-bit resolution with 4 independent D/A converters
• Output Configuration: Voltage-buffered output topology
• Interface Protocol: SPI digital interface
• Supply Voltage Requirements: ±5V analog supply and 5V digital supply
• Accuracy Specifications: INL/DNL performance of ±2 LSB and ±1 LSB respectively
• Conversion Architecture: R-2R resistor ladder topology
• Package Compatibility: 48-BSSOP surface mount package with identical pinout and mechanical dimensions
• Environmental Specifications: Operating temperature range of -40°C to 85°C and MSL rating of 3

The DAC7634EB meets all these criteria and is classified as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The DAC7634EB is a direct functional and mechanical equivalent to the DAC7634EBG4. Both components share identical electrical specifications, package geometry, and compliance certifications. The primary distinction is product status: the DAC7634EBG4 is discontinued, while the DAC7634EB maintains active production status.

For new designs or system replacements, the DAC7634EB is the appropriate selection. Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with current manufacturing and environmental standards. The active production status of the DAC7634EB provides supply chain continuity and long-term availability assurance.

Frequently Asked Questions (FAQ)

Q: Can the DAC7634EB be used as a direct replacement for the DAC7634EBG4 in existing designs?

A: Yes. The DAC7634EB is electrically and mechanically identical to the DAC7634EBG4. All electrical parameters, pin configurations, and package dimensions are equivalent. No circuit modifications or firmware changes are required.

Q: Are there any differences in compliance or environmental ratings between these parts?

A: No. Both the DAC7634EBG4 and DAC7634EB carry identical ROHS3 compliance status and MSL rating of 3 (168 Hours). Environmental operating specifications are identical across both components.

Q: Why is the DAC7634EBG4 discontinued?

A: Product discontinuation decisions are made by manufacturers based on market demand and production planning. The DAC7634EB remains in active production and provides full functional equivalence.

Q: What is the significance of the package designation 48-BSSOP?

A: The 48-BSSOP package is a 48-pin Shrink Small Outline Package with a body width of 0.295 inches (7.50mm). This designation ensures mechanical compatibility with PCB layouts designed for the DAC7634EBG4. The DAC7634EB uses the identical package specification.

Q: Are there any supply voltage flexibility options with these parts?

A: No. Both the DAC7634EBG4 and DAC7634EB require fixed supply voltages of ±5V for analog operation and 5V for digital operation. No alternative voltage configurations are available for these specific part numbers.