CS5345-CQZR Equivalent & Substitute Parts

Part Overview

The CS5345-CQZR is a 24-bit audio analog-to-digital converter (ADC) manufactured by Cirrus Logic Inc., designed for high-resolution audio acquisition at sampling rates up to 192 kHz. This component operates with 6 channels and supports serial data interface, making it suitable for professional audio and data acquisition applications requiring multi-channel audio digitization.

The CS5345-CQZR is classified as Obsolete. Locating equivalent or substitute components is necessary for ongoing production support, design revisions, or when inventory becomes unavailable. The identified substitute maintains functional compatibility while offering updated product status and packaging options.

Substiute Parts

CS5345-CQZR

Cirrus Logic Inc.In Stock: 7776CS5345-CQZR Datasheet

Current PartRFQ

CS5345K-CQZR

Cirrus Logic Inc.In Stock: 2755CS5345K-CQZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5345-CQZR is determined by strict equivalence across the following critical parameters:

• Resolution and Sampling Rate: Both parts must support 24-bit resolution at 192 kHz sampling rate
• Channel Count: Both parts must provide 6 channels
• Data Interface: Both parts must support Serial interface capability
• Voltage Supply: Both parts must operate within the 3.13V ~ 5.25V range for analog and digital supplies
• Operating Temperature Range: Both parts must support -10°C ~ 70°C operation
• Package Type: Both parts must use 48-LQFP (7x7) surface mount packaging
• Compliance Standards: Both parts must maintain ROHS3 compliance, REACH Unaffected status, and identical MSL rating

The CS5345K-CQZR meets all these criteria and is designated as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The CS5345K-CQZR is the manufacturer-designated substitute for the CS5345-CQZR. Both components maintain identical electrical specifications, channel configuration, resolution, and sampling rate capabilities. The substitute part is available in Tape & Reel packaging, which is standard for production environments.

Both parts carry Obsolete or Not For New Designs status, indicating limited long-term availability. For new designs, consultation with Cirrus Logic Inc. regarding current-generation audio ADC solutions is recommended. For existing production requiring the CS5345-CQZR, the CS5345K-CQZR provides functional equivalence with identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN classification).

The data interface difference—the substitute supports both I2S and Serial protocols compared to Serial-only on the original—provides additional interface flexibility without compromising backward compatibility in serial mode operation.

Frequently Asked Questions (FAQ)

Q: Can the CS5345K-CQZR be used as a direct replacement for the CS5345-CQZR in existing designs?

A: Yes. Both parts share identical electrical specifications, channel count (6), resolution (24-bit), sampling rate (192 kHz), voltage supply range (3.13V ~ 5.25V), operating temperature range (-10°C ~ 70°C), and 48-LQFP package footprint. The substitute's additional I2S interface capability does not affect serial-mode operation.

Q: What is the difference in packaging between these two parts?

A: The CS5345-CQZR is supplied in standard packaging, while the CS5345K-CQZR is available in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated assembly processes and high-volume production environments.

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

A: No. Both parts maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, EAR99 ECCN classification, and MSL 3 (168 Hours) moisture sensitivity rating.

Q: Why is the CS5345-CQZR marked as Obsolete?

A: Obsolete status indicates the part is no longer in active production by the manufacturer. The CS5345K-CQZR, marked as Not For New Designs, represents the final available variant from this product line.

Q: What is the significance of the I2S interface addition in the CS5345K-CQZR?

A: The CS5345K-CQZR supports both I2S and Serial data interfaces, providing design flexibility. Existing designs using serial interface operation remain fully compatible, as serial mode functionality is preserved.

Q: Are there inventory considerations when selecting between these parts?

A: The CS5345-CQZR has 7684 units in stock, while the CS5345K-CQZR has 2665 units available. Availability should be confirmed with your component supplier, as both parts carry end-of-life status.