CS5381-KZZ Equivalent & Substitute Parts

Part Overview

The CS5381-KZZ is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Cirrus Logic Inc., designed for multi-channel data acquisition applications. This device features 2 differential inputs with simultaneous sampling capability and I2S digital output interface. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for new production and field replacements.

Substiute Parts

CS5381-KZZ

Cirrus Logic Inc.In Stock: 2316CS5381-KZZ Datasheet

Current PartRFQ

CS5381K-KZZ

Cirrus Logic Inc.In Stock: 1127CS5381K-KZZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CS5381K-KZZ qualifies as a direct substitute for the CS5381-KZZ based on the following critical parameters:

• Resolution & Sampling: Both devices provide 24-bit resolution at 216 kHz sampling rate
• Channel Configuration: Both feature 2 differential inputs with simultaneous sampling
• Digital Interface: Both implement I2S data output
• Architecture: Both utilize Sigma-Delta conversion topology with 2 A/D converters
• Reference: Both employ internal voltage reference
• Package: Both use 24-TSSOP surface-mount package with identical physical dimensions
• Operating Temperature: Both support -10°C ~ 70°C range
• Compliance: Both are ROHS3 compliant with identical MSL rating (3, 168 Hours)

The primary distinction is product status: CS5381-KZZ is obsolete while CS5381K-KZZ is active, making the latter the recommended path for ongoing component procurement.

Parameter Comparison

Engineering Selection Recommendations

The CS5381K-KZZ is the appropriate substitute for CS5381-KZZ applications. Both devices maintain identical functional specifications across all critical parameters: 24-bit resolution, 2-channel differential input configuration, 216 kHz sampling rate, I2S interface, and Sigma-Delta architecture. The CS5381K-KZZ offers improved supply voltage tolerance ranges (4.75V ~ 5.25V analog, 3.1V ~ 5.25V digital) compared to the main part's fixed 5V analog specification, providing enhanced design flexibility.

Both parts maintain equivalent compliance certifications: ROHS3 compliance, identical MSL rating, and REACH unaffected status. The CS5381K-KZZ is currently in active production status with confirmed inventory availability, ensuring reliable long-term sourcing for new designs and field service applications. The identical 24-TSSOP package and surface-mount configuration enable direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can CS5381K-KZZ directly replace CS5381-KZZ in existing designs?

A: Yes. Both devices share identical pin configuration, package dimensions (24-TSSOP), and functional specifications. No PCB modifications are required for substitution.

Q: What are the key differences between these parts?

A: The primary difference is product status: CS5381-KZZ is obsolete while CS5381K-KZZ is active. The CS5381K-KZZ also provides wider supply voltage tolerance ranges, offering improved design margin.

Q: Are there any supply voltage compatibility concerns?

A: The CS5381K-KZZ accepts a wider analog supply range (4.75V ~ 5.25V) compared to CS5381-KZZ (5V nominal). Both support the same digital supply range of 3.3V ~ 5V. Designs operating within 4.75V ~ 5.25V are fully compatible with both parts.

Q: Do these parts require different PCB layout considerations?

A: No. Both devices use identical 24-TSSOP packaging with the same physical footprint and pin spacing. Existing PCB designs require no layout modifications.

Q: What compliance certifications apply to both parts?

A: Both CS5381-KZZ and CS5381K-KZZ are ROHS3 compliant, carry MSL rating 3 (168 Hours), and are REACH unaffected.

Q: Is CS5381K-KZZ available for immediate procurement?

A: Yes. CS5381K-KZZ is in active production status with confirmed inventory availability, ensuring reliable component sourcing for production and field service requirements.