DF1704E/2KG4 Equivalent & Substitute Parts

Part Overview

The DF1704E/2KG4 is a 2-channel audio interpolation filter manufactured by Texas Instruments in the SoundPlus™ series. This device is designed for consumer and professional audio applications, supporting sample rates from 32kHz to 96kHz with an I2S interface. The part is currently classified as Obsolete, which necessitates identification of suitable substitute components for ongoing system support and new procurement requirements.

Substiute Parts

DF1704E/2KG4

Texas InstrumentsIn Stock: 775DF1704E/2KG4 Datasheet

Current PartRFQ

DF1704E

Texas InstrumentsIn Stock: 66184DF1704E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF1704E/2KG4 is determined by strict equivalence across the following critical parameters:

• Functional Category: Interpolation Filter with identical channel count (2 channels)
• Interface Standard: I2S digital audio interface
• Electrical Specifications: Supply voltage range 4.5V ~ 5.5V and operating temperature range -25°C ~ 85°C
• Audio Performance: Sample rate support of 32kHz ~ 96kHz
• Physical Form Factor: 28-SSOP surface mount package with identical dimensions
• Regulatory Compliance: ROHS3 compliance and MSL Level 1 rating

The DF1704E variant meets all substitution criteria and maintains full electrical and mechanical compatibility with the DF1704E/2KG4.

Parameter Comparison

Engineering Selection Recommendations

The DF1704E is the qualified substitute for the obsolete DF1704E/2KG4. Both components share identical electrical specifications, package geometry, and regulatory certifications. The primary distinction is product status: the DF1704E is classified as Not For New Designs, indicating limited long-term availability. Selection should be based on procurement timeline and inventory requirements. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for consumer and professional audio applications.

Frequently Asked Questions (FAQ)

Q: Can the DF1704E directly replace the DF1704E/2KG4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including supply voltage, operating temperature range, sample rate support, I2S interface, and 28-SSOP package dimensions. No circuit modifications are required.

Q: What is the difference between DF1704E/2KG4 and DF1704E?

A: The DF1704E/2KG4 is the obsolete variant with specific packaging designation. The DF1704E is the manufacturer-recommended substitute with identical functional and electrical characteristics but different product status classification.

Q: Are there packaging differences between these parts?

A: The DF1704E/2KG4 is supplied in tape format, while the DF1704E is supplied in tube packaging. Both use the same 28-SSOP physical form factor with identical pin configuration and dimensions.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling. Standard component storage conditions apply without special desiccant requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the DF1704E/2KG4 and DF1704E are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for consumer and professional audio equipment.