CS42516-CQZ Equivalent & Substitute Parts

Part Overview

The CS42516-CQZ is a general purpose audio interface codec manufactured by Cirrus Logic Inc., featuring S/PDIF receiver capability with 24-bit serial data interface in a 64-LQFP surface mount package. This component integrates 2 ADCs and 6 DACs with Sigma Delta modulation, delivering 114 dB dynamic range on ADCs and 110 dB on DACs. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for new production and legacy system support.

Substiute Parts

CS42516-CQZ

Cirrus Logic Inc.In Stock: 1325CS42516-CQZ Datasheet

Current PartRFQ

CS42516K-CQZ

Cirrus Logic Inc.In Stock: 1543CS42516K-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CS42516K-CQZ qualifies as a direct substitute for the CS42516-CQZ based on the following critical parameters:

Matching Electrical Specifications:

• Identical 24-bit serial data interface architecture
• Matching Sigma Delta modulation technology
• Identical dynamic range performance: 114 dB (ADCs) / 110 dB (DACs)
• Identical analog supply voltage range: 4.75V ~ 5.25V
• Identical digital supply voltage range: 3.13V ~ 5.25V
• Identical operating temperature range: -10°C ~ 70°C

Matching Mechanical Specifications:

• Identical package type: 64-LQFP (10x10)
• Identical surface mount mounting type
• Identical MSL rating: 3 (168 Hours)

Compliance Alignment:

• Both parts maintain ROHS3 compliance
• Both parts maintain REACH unaffected status
• Both parts share identical ECCN and HTSUS classifications

Key Distinction: The CS42516K-CQZ differs in ADC/DAC channel configuration (6 ADCs / 2 DACs versus 2 ADCs / 6 DACs) and is classified as Active product status, providing superior long-term availability compared to the obsolete CS42516-CQZ.

Parameter Comparison

Engineering Selection Recommendations

The CS42516K-CQZ is the qualified substitute for the obsolete CS42516-CQZ. Selection of the CS42516K-CQZ provides the following advantages:

Compliance & Certification: Both parts maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new production and legacy system updates.

Product Status & Availability: The CS42516K-CQZ carries Active product status with documented inventory availability (1477 pcs), whereas the CS42516-CQZ is obsolete with limited remaining stock (1258 pcs). Active status ensures continued manufacturing support and long-term supply chain stability.

Electrical & Mechanical Compatibility: Identical electrical specifications (voltage ranges, operating temperature, dynamic range performance) and mechanical specifications (64-LQFP package, surface mount, MSL rating) ensure direct functional compatibility in existing circuit designs.

Channel Configuration Consideration: The CS42516K-CQZ reverses the ADC/DAC channel count (6 ADCs / 2 DACs versus 2 ADCs / 6 DACs). Design integration requires verification that the application's signal flow architecture accommodates this channel configuration difference.

Frequently Asked Questions (FAQ)

Q: Can the CS42516K-CQZ be used as a direct pin-for-pin replacement for the CS42516-CQZ?

A: Both parts share identical 64-LQFP (10x10) package geometry and surface mount specifications. Pin compatibility requires verification against the specific pinout documentation for each part number, as channel configuration differences may result in different pin assignments for ADC and DAC signal paths.

Q: What is the primary reason for substituting the CS42516-CQZ?

A: The CS42516-CQZ is classified as obsolete, indicating discontinued manufacturing and declining inventory availability. The CS42516K-CQZ maintains Active product status with current manufacturing support, ensuring long-term component availability for production and legacy system support.

Q: Are the electrical performance specifications identical between these parts?

A: Yes. Both parts deliver identical 24-bit serial data interface resolution, 114 dB ADC dynamic range, 110 dB DAC dynamic range, identical supply voltage ranges (4.75V ~ 5.25V analog, 3.13V ~ 5.25V digital), and identical operating temperature range (-10°C ~ 70°C).

Q: Do both parts meet the same compliance and certification requirements?

A: Yes. Both the CS42516-CQZ and CS42516K-CQZ are ROHS3 compliant, REACH unaffected, and share identical MSL rating (3, 168 Hours), ECCN, and HTSUS classifications.

Q: What is the key functional difference between these parts?

A: The CS42516K-CQZ reverses the ADC/DAC channel configuration, providing 6 ADCs and 2 DACs compared to the 2 ADCs and 6 DACs of the CS42516-CQZ. Circuit design integration must accommodate this channel architecture difference.

Q: Is the CS42516K-CQZ available in the same packaging options?

A: The CS42516K-CQZ is supplied in Tray packaging, whereas the CS42516-CQZ packaging specification is not detailed in the provided data. Both parts use identical 64-LQFP (10x10) case geometry for surface mount assembly.