CS5343-CZZR Equivalent & Substitute Parts

Part Overview

The CS5343-CZZR is a 24-bit audio ADC (Analog-to-Digital Converter) manufactured by Cirrus Logic Inc., designed for data acquisition applications requiring serial interface connectivity. This component operates at a 96 kHz sampling rate with dual-channel audio processing capability and supports dual supply voltage ranges (3.1V–4.6V and 4.75V–5.25V). The part is currently in Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain component availability for ongoing production and maintenance requirements.

Substiute Parts

CS5343-CZZR

Cirrus Logic Inc.In Stock: 45127CS5343-CZZR Datasheet

Current PartRFQ

CS5361K-DZZR

Cirrus Logic Inc.In Stock: 11679CS5361K-DZZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5343-CZZR is determined by the following critical parameters:

• Resolution and Channel Count: Both main and substitute parts must maintain 24-bit resolution with 2-channel audio processing to preserve signal integrity and system architecture.
• Sampling Rate Compatibility: The substitute part must support the required sampling frequency. The CS5361K-DZZR operates at 192 kHz, which is backward-compatible with 96 kHz operation through firmware or hardware configuration.
• Data Interface: The main part uses Serial interface; the substitute uses I2S (Integrated Interchip Sound), which is a standard serial audio protocol compatible with audio ADC applications.
• Supply Voltage Ranges: Both parts support overlapping voltage ranges (4.75V–5.25V common range), ensuring power supply compatibility.
• Package and Mounting: Both parts are surface-mount devices; however, the substitute uses a 24-TSSOP package versus the original 10-TFSOP/10-MSOP, requiring PCB layout modification.
• Compliance and Certifications: Both parts maintain ROHS3 compliance, identical MSL ratings, and equivalent regulatory status (REACH Unaffected, EAR99 ECCN).

Parameter Comparison

Engineering Selection Recommendations

The CS5361K-DZZR is an active product from the same manufacturer (Cirrus Logic Inc.) and represents a viable substitute for the CS5343-CZZR, which is in Last Time Buy status. Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 ECCN) and equivalent moisture sensitivity ratings, ensuring regulatory and environmental compatibility.

The substitute part offers enhanced performance specifications: 192 kHz sampling rate capability (versus 96 kHz) and I2S interface protocol, which is a standard in audio ADC applications. The overlapping supply voltage range (4.75V–5.25V) ensures power distribution compatibility. However, the package transition from 10-TFSOP/10-MSOP to 24-TSSOP requires PCB redesign and layout modification. The increased pin count and package footprint necessitate engineering validation during integration.

Selection of the CS5361K-DZZR is appropriate for new designs or redesign cycles where PCB layout modification is feasible. For applications requiring minimal design changes, alternative parts within the same package family should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the CS5361K-DZZR directly replace the CS5343-CZZR without PCB modification?

A: No. The CS5361K-DZZR uses a 24-TSSOP package with a 4.40mm width, compared to the CS5343-CZZR's 10-TFSOP/10-MSOP package with 3.00mm width. PCB layout redesign is required to accommodate the different footprint and increased pin count.

Q: Are the data interface protocols compatible?

A: The CS5343-CZZR uses Serial interface, while the CS5361K-DZZR uses I2S (Integrated Interchip Sound). Both are serial audio protocols; however, firmware or hardware interface adaptation may be necessary depending on the host system's audio interface capabilities.

Q: What is the sampling rate relationship between these parts?

A: The CS5343-CZZR operates at 96 kHz, while the CS5361K-DZZR supports 192 kHz. The substitute part can operate at lower sampling rates through configuration, making it backward-compatible with 96 kHz applications.

Q: Are the supply voltage requirements compatible?

A: Both parts share a common operating range of 4.75V–5.25V. The CS5343-CZZR additionally supports 3.1V–4.6V operation, while the CS5361K-DZZR supports 3.1V–5.25V. Verify your system's supply voltage specification before substitution.

Q: What is the significance of the Last Time Buy status for the CS5343-CZZR?

A: Last Time Buy status indicates that the manufacturer has ceased production and will no longer accept new orders after a specified date. Identifying and qualifying substitute parts is necessary to ensure long-term component availability and design continuity.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the CS5343-CZZR and CS5361K-DZZR are ROHS3 compliant, REACH Unaffected, and classified under EAR99 ECCN. Both maintain identical Moisture Sensitivity Level 3 ratings (168 Hours).