CS3308-CQZR Equivalent & Substitute Parts

Part Overview

The CS3308-CQZR is an 8-channel digital audio volume control IC manufactured by Cirrus Logic Inc., housed in a 48-LQFP surface mount package. This component is designed for audio systems requiring multi-channel volume management with I2C and SPI interface support. The CS3308-CQZR is classified as obsolete product status, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CS3308-CQZR

Cirrus Logic Inc.In Stock: 3079CS3308-CQZR Datasheet

Current PartRFQ

CS3308K-CQZR

Cirrus Logic Inc.In Stock: 3099CS3308K-CQZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS3308-CQZR is determined by strict equivalence across the following critical parameters:

• Manufacturer & Base Product Line: Both parts must originate from Cirrus Logic Inc. and share the CS3308 base product number
• Channel Configuration: 8-channel architecture must be maintained
• Interface Protocol: I2C and SPI support required
• Package Specification: 48-LQFP (7x7) surface mount package is mandatory for PCB compatibility
• Electrical Specifications: Supply voltage range and operating temperature must support the application requirements
• Compliance Standards: RoHS3 compliance and MSL rating must be equivalent or superior

The CS3308K-CQZR qualifies as a direct substitute based on these parameters. It maintains identical channel count, interface protocols, and package configuration while offering extended operating temperature range and active product status.

Parameter Comparison

Engineering Selection Recommendations

The CS3308K-CQZR is the manufacturer-recommended substitute for the obsolete CS3308-CQZR. Selection of the CS3308K-CQZR is supported by the following factors:

• Product Lifecycle Status: The CS3308K-CQZR maintains active product status with ongoing manufacturer support, ensuring long-term availability and supply chain stability
• Regulatory Compliance: Both parts maintain ROHS3 compliance and identical MSL ratings, confirming equivalent environmental and handling requirements
• Functional Equivalence: Identical 8-channel configuration, I2C/SPI interface support, and 48-LQFP package ensure direct PCB compatibility without redesign
• Enhanced Operating Range: The CS3308K-CQZR extends the lower operating temperature limit to -10°C, providing broader application flexibility
• Supply Voltage Compatibility: The extended voltage specification (±4.75V ~ 5.25V) in the substitute part encompasses the original part's range, ensuring backward compatibility

Frequently Asked Questions (FAQ)

Q: Can the CS3308K-CQZR be used as a direct replacement for the CS3308-CQZR without PCB modifications?

A: Yes. Both parts share identical 48-LQFP (7x7) package specifications and pinout configuration. No PCB layout changes are required for substitution.

Q: What is the significance of the extended operating temperature range in the CS3308K-CQZR?

A: The CS3308K-CQZR supports operation from -10°C to 70°C, compared to the original part's 0°C to 70°C range. This extended lower temperature limit allows deployment in applications requiring sub-zero operation without performance degradation.

Q: Are there differences in the supply voltage specifications between these parts?

A: The CS3308K-CQZR specifies ±4.75V ~ 5.25V, while the CS3308-CQZR specifies 4.75V ~ 5.25V. The substitute part's specification encompasses the original range and provides additional flexibility for bipolar supply configurations.

Q: What packaging options are available for the CS3308K-CQZR?

A: The CS3308K-CQZR is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The original CS3308-CQZR was supplied in standard packaging.

Q: Are both parts RoHS compliant?

A: Yes. Both the CS3308-CQZR and CS3308K-CQZR maintain ROHS3 compliance status, confirming equivalent environmental standards and restricted substance limitations.

Q: What is the MSL rating, and does it differ between these parts?

A: Both parts carry an MSL rating of 3 with a 168-hour floor life specification. This identical rating ensures equivalent moisture sensitivity handling and storage requirements.