CS4350-CZZR Equivalent & Substitute Parts

Part Overview

The CS4350-CZZR is a 24-bit audio digital-to-analog converter (DAC) manufactured by Cirrus Logic Inc., designed for high-fidelity audio applications with 192 kHz sampling rate capability. This component operates as a single-supply device with SPI interface connectivity and is housed in a 24-TSSOP surface-mount package.

The CS4350-CZZR carries a Last Time Buy product status, indicating that this part number will no longer be manufactured after existing inventory is depleted. Identifying equivalent and substitute parts is necessary to ensure design continuity and support for new production runs or replacement applications.

Substiute Parts

CS4350-CZZR

Cirrus Logic Inc.In Stock: 3436CS4350-CZZR Datasheet

Current PartRFQ

CS4398K-CZZR

Cirrus Logic Inc.In Stock: 4545CS4398K-CZZR Datasheet

MFR RecommendedRFQ

WM8523GEDT/R

Cirrus Logic Inc.In Stock: 9507WM8523GEDT/R Datasheet

MFR RecommendedRFQ

WM8524CGEDT/R

Cirrus Logic Inc.In Stock: 88411WM8524CGEDT/R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS4350-CZZR are selected based on the following core electrical and mechanical parameters that determine functional compatibility:

Critical Matching Parameters:

• Resolution: 24 bits (all substitutes maintain this specification)
• Sampling Rate: 192 kHz (all substitutes support this rate)
• Number of Channels: 2 (all substitutes provide dual-channel output)
• Category: Data Acquisition / Audio DAC (all substitutes are audio DACs)
• Mounting Type: Surface Mount (all substitutes use surface-mount technology)
• RoHS Compliance: ROHS3 Compliant (all substitutes meet this requirement)

Variable Parameters Affecting Substitution:

• Data Interface: The CS4350-CZZR uses SPI; substitutes may use SPI, I2C, or I2S depending on design requirements
• Voltage Supply Source: The CS4350-CZZR uses single supply; substitutes may use single or dual supply configurations
• Package Type: Varies from 16-TSSOP to 28-TSSOP, affecting PCB layout and pin count
• Operating Temperature Range: Varies between substitutes; the CS4350-CZZR range of -40°C to 85°C is maintained or exceeded by all substitutes

The three substitute parts listed (CS4398K-CZZR, WM8523GEDT/R, WM8524CGEDT/R) all maintain the core audio DAC functionality with identical resolution and sampling rate specifications, making them viable alternatives when the CS4350-CZZR reaches end-of-life.

Parameter Comparison

Engineering Selection Recommendations

CS4398K-CZZR: This part maintains Cirrus Logic manufacturing continuity and offers dual interface support (I2C and SPI), providing design flexibility beyond the original SPI-only specification. However, the operating temperature range is narrower (-10°C to 70°C versus -40°C to 85°C), which may limit suitability for industrial or extended-temperature applications. The 28-TSSOP package requires additional PCB space compared to the original 24-TSSOP. This substitute is recommended for applications where the narrower temperature range is acceptable and dual interface capability provides system-level advantages.

WM8523GEDT/R: This part maintains the full operating temperature range (-40°C to 85°C) and single-supply architecture of the original CS4350-CZZR. The 20-TSSOP package reduces pin count and PCB footprint. Dual interface support (I2C and SPI) is provided. This substitute is recommended for space-constrained designs where the reduced package size is beneficial and temperature performance must match the original specification.

WM8524CGEDT/R: This part maintains the full operating temperature range (-40°C to 85°C) and offers the smallest package footprint (16-TSSOP). However, the data interface is I2S only, which differs from the original SPI specification. This substitute is recommended exclusively for applications where I2S interface compatibility exists in the system design and package size minimization is a priority. This part is not suitable as a direct replacement for SPI-dependent designs without interface conversion circuitry.

All three substitutes maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the CS4398K-CZZR directly replace the CS4350-CZZR in all applications?

A: The CS4398K-CZZR maintains identical audio specifications (24-bit resolution, 192 kHz sampling rate, 2-channel output) and supports SPI interface. However, the operating temperature range is reduced to -10°C to 70°C, which may not be suitable for applications requiring the original -40°C to 85°C range. Additionally, the 28-TSSOP package has a different pin count and footprint than the 24-TSSOP original, requiring PCB layout modifications.

Q: What is the primary difference between WM8523GEDT/R and WM8524CGEDT/R?

A: Both parts maintain 24-bit resolution and 192 kHz sampling rate. The WM8523GEDT/R uses a 20-TSSOP package with I2C and SPI interface support, while the WM8524CGEDT/R uses a smaller 16-TSSOP package with I2S interface only. The WM8524CGEDT/R is not compatible with SPI-based designs without additional interface conversion.

Q: Which substitute is best for industrial temperature applications?

A: Both WM8523GEDT/R and WM8524CGEDT/R maintain the full -40°C to 85°C operating temperature range of the original CS4350-CZZR. The CS4398K-CZZR has a narrower range (-10°C to 70°C) and is not suitable for extended industrial temperature requirements.

Q: Are all substitutes RoHS3 compliant?

A: Yes, all three substitute parts (CS4398K-CZZR, WM8523GEDT/R, WM8524CGEDT/R) are ROHS3 compliant, matching the original CS4350-CZZR specification.

Q: What packaging considerations should be evaluated when selecting a substitute?

A: The original CS4350-CZZR uses a 24-TSSOP package. The CS4398K-CZZR requires a 28-TSSOP footprint (larger), while WM8523GEDT/R uses 20-TSSOP and WM8524CGEDT/R uses 16-TSSOP (both smaller). PCB layout, routing, and thermal management must be re-evaluated for any package change.

Q: Can WM8524CGEDT/R replace the CS4350-CZZR in an SPI-based design?

A: No. The WM8524CGEDT/R supports I2S interface only, while the CS4350-CZZR uses SPI. Direct substitution is not possible without adding interface conversion circuitry. The WM8523GEDT/R or CS4398K-CZZR are appropriate alternatives for SPI-dependent designs.