CS3308-CQZ Equivalent & Substitute Parts

Part Overview

The CS3308-CQZ 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-CQZ is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.

Substiute Parts

CS3308-CQZ

Cirrus Logic Inc.In Stock: 1901CS3308-CQZ Datasheet

Current PartRFQ

CS3308K-CQZ

Cirrus Logic Inc.In Stock: 1325CS3308K-CQZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS3308-CQZ is determined by the following critical parameters:

• Manufacturer & Series: Both parts are manufactured by Cirrus Logic Inc., ensuring design compatibility and pin-level equivalence
• Channel Configuration: Both maintain 8-channel architecture for audio volume control
• Interface Protocol: Both support I2C and SPI communication interfaces
• Package Specification: Both use 48-LQFP (7x7) surface mount packaging, ensuring PCB layout compatibility
• Supply Voltage Range: Both operate within the 4.75V ~ 5.25V range, with the substitute supporting an extended lower temperature range
• Compliance Standards: Both are ROHS3 compliant and REACH unaffected, meeting regulatory requirements
• Moisture Sensitivity: Both maintain MSL 3 rating (168 Hours)

The CS3308K-CQZ qualifies as a direct substitute based on these aligned parameters. The primary distinction is product status: CS3308-CQZ is obsolete while CS3308K-CQZ is active.

Parameter Comparison

Engineering Selection Recommendations

The CS3308K-CQZ is the manufacturer-recommended substitute for the obsolete CS3308-CQZ. Both components maintain identical pin configurations, package geometry, and functional specifications for 8-channel audio volume control applications.

Selection of CS3308K-CQZ is appropriate for:

• New product designs requiring 8-channel digital volume control with I2C/SPI interface
• Replacement of end-of-life CS3308-CQZ components in existing production
• Applications requiring active component status and ongoing manufacturer support

Both parts satisfy ROHS3 compliance and REACH regulatory requirements. The CS3308K-CQZ provides an extended operating temperature range (-10°C to 70°C versus 0°C to 70°C), offering improved performance in lower temperature environments.

Frequently Asked Questions (FAQ)

Q: Can CS3308K-CQZ directly replace CS3308-CQZ on existing PCBs?

A: Yes. Both components use identical 48-LQFP (7x7) surface mount packaging with matching pin configurations. No PCB layout modifications are required.

Q: What is the primary reason for substitution?

A: The CS3308-CQZ is classified as obsolete. The CS3308K-CQZ is the active equivalent from Cirrus Logic Inc., ensuring continued availability and manufacturer support.

Q: Are there differences in supply voltage specifications?

A: The CS3308-CQZ operates at 4.75V ~ 5.25V. The CS3308K-CQZ specifies ±4.75V ~ 5.25V, indicating support for both positive and negative supply configurations. Both are compatible with standard 5V supply systems.

Q: Do both parts support the same communication interfaces?

A: Yes. Both CS3308-CQZ and CS3308K-CQZ support I2C and SPI interfaces, ensuring firmware and software compatibility.

Q: Are there compliance or certification differences?

A: No. Both components are ROHS3 compliant, REACH unaffected, and maintain identical Moisture Sensitivity Level 3 (168 Hours) ratings.

Q: What is the operating temperature range difference?

A: The CS3308-CQZ operates from 0°C to 70°C. The CS3308K-CQZ extends the lower limit to -10°C, providing a wider operating temperature range suitable for industrial and automotive applications.