DSD1794DBRG4 Equivalent & Substitute Parts

Part Overview

The DSD1794DBRG4 is a 24-bit audio digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for high-resolution audio applications supporting both DSD and PCM data interfaces. With a 200 kHz sampling rate and 3-channel configuration, this component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity.

Substiute Parts

DSD1794DBRG4

Texas InstrumentsIn Stock: 839DSD1794DBRG4 Datasheet

Current PartRFQ

DSD1794ADBR

Burr BrownIn Stock: 4657DSD1794ADBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSD1794DBRG4 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or exceed the original specification:

• Resolution: 24 bits (minimum)
• Number of Channels: 3
• Sampling Rate: 200 kHz (minimum)
• Data Interface: DSD and PCM support
• Package Type: 28-SSOP form factor
• Mounting Type: Surface Mount
• Operating Temperature Range: -25°C to 85°C (minimum)
• Voltage Supply Source: Analog and Digital

The DSD1794ADBR, manufactured by Burr Brown, meets all substitution criteria and is classified as an active product with current availability.

Parameter Comparison

Engineering Selection Recommendations

The DSD1794ADBR is the qualified substitute for the obsolete DSD1794DBRG4. Selection is based on the following engineering criteria:

• Electrical equivalence: All critical parameters including resolution, channel count, sampling rate, and data interface specifications are identical.
• Package compatibility: Both components utilize the 28-SSOP surface mount package, ensuring PCB layout compatibility without redesign.
• Thermal compatibility: Operating temperature ranges are identical, supporting equivalent thermal management requirements.
• Supply voltage specification: The DSD1794ADBR provides explicit voltage supply ranges (3V to 3.6V, 5V), enabling precise power supply design.
• Product status: The DSD1794ADBR is an active product with documented availability, ensuring long-term supply chain viability compared to the obsolete original part.
• Regulatory compliance: Both components meet ROHS3 and REACH requirements, maintaining compliance with applicable regulations.

Frequently Asked Questions (FAQ)

Q: Can the DSD1794ADBR be used as a direct replacement for the DSD1794DBRG4?

A: Yes. The DSD1794ADBR meets all electrical and mechanical substitution criteria. Both components share identical resolution (24 bits), channel configuration (3 channels), sampling rate (200 kHz), data interface support (DSD and PCM), package type (28-SSOP), and operating temperature range (-25°C to 85°C). No circuit redesign is required.

Q: Are there any differences in supply voltage requirements between these parts?

A: The DSD1794ADBR specifies supply voltage ranges of 3V to 3.6V and 5V. The original DSD1794DBRG4 does not provide explicit voltage specifications in available documentation. Verify your existing power supply design against the DSD1794ADBR datasheet to confirm compatibility.

Q: Will the DSD1794ADBR fit the existing PCB layout designed for the DSD1794DBRG4?

A: Yes. Both components use the 28-SSOP package with identical dimensions (0.209" width, 5.30mm). Pin-to-pin compatibility is maintained, allowing direct PCB placement without layout modifications.

Q: What is the difference in product status between these two parts?

A: The DSD1794DBRG4 is classified as obsolete and no longer manufactured. The DSD1794ADBR is an active product with current production and documented inventory availability, ensuring reliable supply for new designs and production runs.

Q: Are both parts compliant with RoHS and REACH regulations?

A: The DSD1794DBRG4 is confirmed ROHS3 compliant and REACH unaffected. The DSD1794ADBR compliance status should be verified against the manufacturer's current documentation to ensure regulatory alignment with your application requirements.