CS42528-DQZ Equivalent & Substitute Parts

Part Overview

The CS42528-DQZ is a 24-bit serial audio interface codec with S/PDIF receiver capability, manufactured by Cirrus Logic Inc. in a 64-LQFP surface mount package. This component integrates 2 ADCs and 8 DACs with Sigma Delta modulation, delivering 114 dB dynamic range for both conversion paths. The part is classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

CS42528-DQZ

Cirrus Logic Inc.In Stock: 1228CS42528-DQZ Datasheet

Current PartRFQ

CS42528-CQZ

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CS42528-DQZ is determined by the following critical parameters:

• Package compatibility: 64-LQFP (10x10) surface mount form factor
• Functional equivalence: 24-bit serial audio codec with 2 ADCs and 8 DACs
• Sigma Delta architecture: Required for dynamic range specification
• Supply voltage ranges: Analog 4.75V ~ 5.25V and Digital 3.13V ~ 5.25V
• Dynamic range performance: 114 dB minimum for both ADC and DAC paths

The CS42528-CQZ meets all these criteria and is identified as the manufacturer-recommended substitute. Both parts share the same base product number (CS42528) and core electrical specifications, with differences limited to packaging format and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The CS42528-CQZ is the direct functional equivalent to the CS42528-DQZ. Both parts are obsolete products from Cirrus Logic Inc. with identical electrical specifications and package geometry. Selection between these parts depends on application-specific requirements:

Operating Temperature Consideration: The CS42528-DQZ supports -40°C ~ 85°C, while the CS42528-CQZ operates within -10°C ~ 70°C. Applications requiring extended low-temperature operation below -10°C must retain the CS42528-DQZ if available.

Packaging and Moisture Sensitivity: The CS42528-DQZ uses dry pack (DQZ) with MSL 2 (1 Year), while the CS42528-CQZ uses tray packaging (CQZ) with MSL 3 (168 Hours). Dry pack format provides longer shelf life and is preferred for long-term inventory storage.

Compliance Status: Both parts are REACH Unaffected and classified as EAR99 for export control purposes. The CS42528-CQZ carries RoHS3 compliance certification, while the CS42528-DQZ compliance status is not specified in available documentation.

Frequently Asked Questions (FAQ)

Q: Can CS42528-CQZ replace CS42528-DQZ in all applications?

A: Functional replacement is possible for applications operating within -10°C ~ 70°C. Applications requiring operation below -10°C or above 70°C must verify temperature compatibility before substitution.

Q: What is the difference between DQZ and CQZ packaging designations?

A: DQZ indicates dry pack moisture barrier packaging with 1-year shelf life at MSL 2. CQZ indicates standard tray packaging with 168-hour shelf life at MSL 3. Dry pack provides superior long-term storage characteristics.

Q: Are the pin configurations identical between these parts?

A: Both parts use the 64-LQFP (10x10) package format with identical pin assignments. PCB layout and footprints are directly compatible.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching: 24-bit resolution, 2 ADC / 8 DAC configuration, 114 dB dynamic range, Sigma Delta architecture, serial data interface, and dual supply voltage ranges (4.75V ~ 5.25V analog, 3.13V ~ 5.25V digital).

Q: Are there compliance or certification differences between these parts?

A: Both parts are REACH Unaffected and EAR99 classified. The CS42528-CQZ includes RoHS3 compliance certification. Verify specific compliance requirements for your application before selection.