CS42526-CQZR Equivalent & Substitute Parts

Part Overview

The CS42526-CQZR is a General Purpose Interface codec with S/PDIF receiver capability, manufactured by Cirrus Logic Inc. This 24-bit serial interface device integrates 2 ADCs and 6 DACs with Sigma Delta modulation, housed in a 64-LQFP surface mount package. The part is currently classified as Obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for production and maintenance applications.

Substiute Parts

CS42526-CQZR

Cirrus Logic Inc.In Stock: 4133CS42526-CQZR Datasheet

Current PartRFQ

CS42526K-CQZR

Cirrus Logic Inc.In Stock: 1979CS42526K-CQZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CS42526-CQZR is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 64-LQFP (10x10) surface mount configuration
• Data Interface: Serial
• Resolution: 24 bits
• Sigma Delta modulation capability
• Dynamic Range: 114 dB (both ADCs and DACs)
• Voltage supply ranges: Analog 4.75V ~ 5.25V; Digital 3.13V ~ 5.25V
• Operating Temperature: -10°C ~ 70°C
• RoHS3 Compliance
• Moisture Sensitivity Level: 3 (168 Hours)

Allowable Variation:

• ADC / DAC channel configuration: The CS42526K-CQZR provides 6 ADCs and 2 DACs (inverse ratio), which maintains functional equivalence for applications requiring multi-channel audio processing with identical electrical performance characteristics.
• Product Status: Active status preferred for long-term availability.
• Packaging format: Tape & Reel acceptable as alternative to bulk packaging.

Parameter Comparison

Engineering Selection Recommendations

The CS42526K-CQZR qualifies as a direct substitute for the CS42526-CQZR based on electrical and mechanical parameter equivalence. The primary distinction is the inverted ADC/DAC channel configuration (6 ADCs / 2 DACs versus 2 ADCs / 6 DACs), which does not affect substitution validity when the application architecture accommodates this channel arrangement.

The CS42526K-CQZR holds Active product status, ensuring continued manufacturer support, availability, and compliance maintenance. Both parts maintain identical dynamic range performance (114 dB), supply voltage specifications, operating temperature range, and package geometry. RoHS3 compliance and MSL rating are equivalent across both parts.

Selection of the CS42526K-CQZR is recommended for new designs and production continuity where the ADC/DAC channel configuration aligns with system requirements.

Frequently Asked Questions (FAQ)

Q: Can the CS42526K-CQZR replace the CS42526-CQZR in existing designs?

A: Substitution is valid when the application architecture supports the inverted ADC/DAC channel configuration (6 ADCs / 2 DACs). All electrical parameters, package geometry, and compliance certifications are equivalent. PCB layout and firmware integration must accommodate the channel configuration difference.

Q: What is the primary reason for seeking a substitute?

A: The CS42526-CQZR is classified as Obsolete. The CS42526K-CQZR is an Active product from the same manufacturer, ensuring long-term availability and continued compliance support.

Q: Are the package dimensions identical?

A: Both parts use the 64-LQFP (10x10) surface mount package with identical pin count and footprint. No PCB redesign is required for package compatibility.

Q: Do the supply voltage requirements differ?

A: No. Both parts require identical analog supply voltage (4.75V ~ 5.25V) and digital supply voltage (3.13V ~ 5.25V) ranges.

Q: What is the operating temperature range for both parts?

A: Both the CS42526-CQZR and CS42526K-CQZR operate across -10°C to 70°C.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 Compliant with identical Moisture Sensitivity Level 3 (168 Hours) ratings.

Q: What is the key difference between these parts?

A: The ADC/DAC channel count is inverted: CS42526-CQZR provides 2 ADCs and 6 DACs, while CS42526K-CQZR provides 6 ADCs and 2 DACs. Dynamic range and all other electrical specifications remain identical at 114 dB.