CS47024B-CQZR Equivalent & Substitute Parts

Part Overview

The CS47024B-CQZR is a 32-bit audio system-on-chip (SoC) manufactured by Cirrus Logic Inc., designed for embedded audio processing applications. This component integrates a fixed-point processor with I2C and SPI interfaces, operating at 150MHz with 128kB on-chip RAM. The part is classified as obsolete, necessitating identification of equivalent alternatives for ongoing system support and new design considerations.

Substiute Parts

CS47024B-CQZR

Cirrus Logic Inc.In Stock: 943CS47024B-CQZR Datasheet

Current PartRFQ

CS47024C-CQZ

Cirrus Logic Inc.In Stock: 4177CS47024C-CQZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CS47024C-CQZ qualifies as a direct substitute for the CS47024B-CQZR based on the following alignment of critical electrical and mechanical parameters:

• Identical base product number (CS47024) within the same CS470xx series
• Matching clock rate (150MHz)
• Identical on-chip RAM capacity (128kB)
• Identical I/O and core voltage specifications (3.30V / 1.80V)
• Identical interface configuration (I2C, SPI)
• Identical operating temperature range (0°C ~ 70°C)
• Identical package type (100-LQFP Exposed Pad)
• Identical mounting technology (Surface Mount)

Substitution is valid where functional equivalence and electrical compatibility are required. Differences in product status and compliance certifications do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The CS47024C-CQZ provides electrical and mechanical equivalence to the CS47024B-CQZR. Selection between these parts should be based on product lifecycle status and compliance requirements:

• For existing designs currently using CS47024B-CQZR, the CS47024C-CQZ offers direct substitution with identical functional performance.
• The CS47024C-CQZ carries ROHS3 compliance certification, whereas the main part does not specify RoHS status.
• Both parts maintain REACH Unaffected status and EAR99 export classification.
• Moisture sensitivity differs: CS47024B-CQZR specifies MSL 2 (1 Year), while CS47024C-CQZ specifies MSL 3 (168 Hours). Storage and handling protocols must align with the selected part's MSL rating.
• The CS47024C-CQZ is designated "Not For New Designs," indicating manufacturer discontinuation trajectory. For new development, alternative solutions within the CS470xx series should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can CS47024C-CQZ replace CS47024B-CQZR in existing designs?

A: Yes. Both parts share identical electrical specifications (clock rate, voltage levels, RAM capacity, interfaces) and mechanical specifications (package type, mounting technology, operating temperature range). Direct substitution is electrically and mechanically valid.

Q: What is the difference between the supplier device packages listed?

A: Both parts use 100-LQFP with exposed pad in a 14x14mm footprint. The designation difference (100-LQFP vs. 100-LQFP-EP) reflects supplier nomenclature but does not indicate functional or dimensional variation.

Q: How do the moisture sensitivity levels affect component handling?

A: CS47024B-CQZR (MSL 2) allows 1 year of dry storage before reflow. CS47024C-CQZ (MSL 3) allows 168 hours (7 days) of dry storage before reflow. Selection impacts storage duration and bake-out requirements prior to assembly.

Q: Are there compliance differences between these parts?

A: CS47024C-CQZ explicitly certifies ROHS3 compliance. The main part does not specify RoHS status. Both maintain REACH Unaffected classification and EAR99 export status.

Q: Why is CS47024C-CQZ marked "Not For New Designs"?

A: This designation indicates the manufacturer is discontinuing this product line. While suitable for sustaining existing designs, new development should evaluate alternative audio SoC solutions from Cirrus Logic or other manufacturers.