CS42428-CQZ Equivalent & Substitute Parts

Part Overview

The CS42428-CQZ is a 24-bit audio interface codec manufactured by Cirrus Logic Inc., designed for serial data communication in audio applications. This device integrates 2 ADCs and 8 DACs with Sigma Delta modulation, delivering 114 dB dynamic range on both input and output channels. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CS42428-CQZ

Cirrus Logic Inc.In Stock: 706CS42428-CQZ Datasheet

Current PartRFQ

CS42528-CQZ

Cirrus Logic Inc.In Stock: 5063CS42528-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS42428-CQZ are qualified based on the following critical parameters that ensure functional and mechanical compatibility:

• Package / Case: 64-LQFP (10x10) form factor for direct PCB footprint compatibility
• Resolution (Bits): 24-bit data width for signal processing equivalence
• Number of ADCs / DACs: 2 ADC and 8 DAC channel configuration
• Data Interface: Serial communication protocol support
• Dynamic Range: 114 dB specification on both ADC and DAC paths
• Voltage Supply Ranges: Analog (4.75V ~ 5.25V) and Digital (3.13V ~ 5.25V) compatibility
• Operating Temperature: -10°C ~ 70°C operational envelope
• Mounting Type: Surface Mount for assembly process alignment

The CS42528-CQZ meets all these criteria and is identified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the CS42428-CQZ and CS42528-CQZ are classified as obsolete products. The CS42528-CQZ is designated as the manufacturer-recommended substitute and maintains identical electrical specifications and physical packaging. The CS42528-CQZ carries RoHS3 compliance certification, providing additional environmental regulatory alignment for new designs and long-term supply chain considerations.

Selection between these parts should be based on current inventory availability and compliance requirements specific to the application. Both parts satisfy the same electrical and mechanical interface requirements for 24-bit serial audio codec applications.

Frequently Asked Questions (FAQ)

Q: Can the CS42528-CQZ be used as a direct replacement for the CS42428-CQZ?

A: Yes. Both parts share identical package geometry (64-LQFP 10x10), electrical specifications (24-bit resolution, 2 ADCs, 8 DACs, 114 dB dynamic range), supply voltage ranges, and operating temperature envelope. PCB footprints and pin configurations are compatible.

Q: What is the difference between the CS42428-CQZ and CS42528-CQZ?

A: The primary difference is functional classification: CS42428-CQZ is categorized as an audio interface codec, while CS42528-CQZ is categorized as a general-purpose interface with S/PDIF receiver capability. Both maintain identical core electrical parameters and packaging.

Q: Are there compliance differences between these parts?

A: The CS42528-CQZ carries RoHS3 compliance certification. Both parts are REACH Unaffected and classified under ECCN EAR99. Compliance requirements should be evaluated against specific application and regional regulations.

Q: What is the moisture sensitivity level, and why does it matter?

A: Both parts have MSL 3 (168 Hours) rating. This indicates the component can be exposed to ambient conditions (30°C, 85% relative humidity) for up to 168 hours before soldering. Proper storage and handling procedures must be followed to prevent moisture absorption, which can cause defects during reflow soldering.

Q: Are both parts still in production?

A: No. Both the CS42428-CQZ and CS42528-CQZ are classified as obsolete. Inventory availability should be confirmed with authorized distributors before design commitment or procurement planning.