CS42518-CQZR Equivalent & Substitute Parts

Part Overview

The CS42518-CQZR is a General Purpose Interface codec with S/PDIF receiver capability, manufactured by Cirrus Logic Inc. This 24-bit serial interface component integrates 2 ADCs and 8 DACs with Sigma Delta modulation in a 64-LQFP surface mount package. The part is currently classified as Obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CS42518-CQZR

Cirrus Logic Inc.In Stock: 2035CS42518-CQZR Datasheet

Current PartRFQ

CS42518K-CQZR

Cirrus Logic Inc.In Stock: 2242CS42518K-CQZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS42518-CQZR is determined by strict equivalence across the following critical parameters:

• Resolution: 24-bit audio data width
• ADC/DAC Configuration: 2 ADCs and 8 DACs
• Sigma Delta Architecture: Required
• Dynamic Range: ADCs 114 dB typical, DACs 110 dB typical
• Analog Supply Voltage: 4.75V to 5.25V
• Digital Supply Voltage: 3.13V to 5.25V
• Operating Temperature Range: -10°C to 70°C
• Package Type: 64-LQFP surface mount
• Compliance: ROHS3 Compliant, REACH Unaffected

The CS42518K-CQZR meets all these parameters and is classified as an Active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The CS42518K-CQZR is the manufacturer-recommended substitute for the obsolete CS42518-CQZR. Both components share identical electrical specifications, package geometry, and compliance certifications. The primary distinction is product status: the CS42518K-CQZR is Active and available through standard distribution channels, while the CS42518-CQZR is Obsolete.

For new designs and replacement applications, the CS42518K-CQZR is the appropriate selection. Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment. The packaging format difference (Tape & Reel for the substitute versus bulk for the original) reflects standard manufacturing practices for active products and does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Are the CS42518-CQZR and CS42518K-CQZR pin-compatible?

A: Yes. Both components use the 64-LQFP package with identical pin assignments and electrical characteristics. PCB layout and schematic modifications are not required for substitution.

Q: What is the difference between the two part numbers?

A: The CS42518K-CQZR is the active production variant of the CS42518-CQZR. The "K" designation indicates the current manufacturing version. Electrical performance and functional specifications are identical.

Q: Can I use the CS42518K-CQZR in existing designs originally specified for the CS42518-CQZR?

A: Yes. The substitute part meets all electrical, thermal, and mechanical requirements of the original specification. No design changes are necessary.

Q: What is the significance of the Tape & Reel packaging for the CS42518K-CQZR?

A: Tape & Reel packaging is standard for active production components and is suitable for automated assembly processes. This packaging format does not affect component performance or compatibility.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the CS42518-CQZR and CS42518K-CQZR are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components.