CS4349-DZZ Equivalent & Substitute Parts

Part Overview

The CS4349-DZZ 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 CS4349-DZZ has reached Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary for design continuity, long-term product support, and inventory planning for applications currently utilizing this component.

Substiute Parts

CS4349-DZZ

Cirrus Logic Inc.In Stock: 10383CS4349-DZZ Datasheet

Current PartRFQ

CS4398K-CZZ

Cirrus Logic Inc.In Stock: 887CS4398K-CZZ Datasheet

MFR RecommendedRFQ

WM8523GEDT

Cirrus Logic Inc.In Stock: 1037WM8523GEDT Datasheet

MFR RecommendedRFQ

WM8524CGEDT

Cirrus Logic Inc.In Stock: 39257WM8524CGEDT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CS4349-DZZ are selected based on the following core electrical and mechanical parameters:

• Resolution and Sampling Rate: All substitute parts maintain 24-bit resolution and 192 kHz sampling rate capability, ensuring audio quality equivalence.
• Number of Channels: All substitutes provide 2-channel output, matching the original part's functionality.
• Data Interface Compatibility: Substitutes support SPI, I2C, or I2S interfaces. Parts with SPI capability (CS4398K-CZZ, WM8523GEDT) provide direct interface compatibility. WM8524CGEDT uses I2S, requiring interface adaptation.
• Supply Voltage: The CS4349-DZZ operates on single supply. WM8523GEDT and WM8524CGEDT maintain single-supply operation (2.97V–3.63V). CS4398K-CZZ requires dual supply configuration (analog and digital), necessitating circuit redesign.
• Package Form Factor: Substitutes are available in 16-TSSOP, 20-TSSOP, and 28-TSSOP packages, all surface-mount variants with 0.173" width, compatible with standard PCB assembly processes.
• Operating Temperature: Substitutes support -40°C to 85°C range, which covers the CS4349-DZZ's lower operating limit but does not extend to 105°C.
• Compliance: All substitutes maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Engineering Selection Recommendations

CS4398K-CZZ: This part is manufacturer-recommended and maintains active product status. It supports both I2C and SPI interfaces, providing interface flexibility. However, it requires dual supply configuration (analog and digital supplies at 4.75V–5.25V and 3.1V–5.25V respectively), which differs from the CS4349-DZZ single-supply design. Operating temperature range is restricted to -10°C to 70°C. Moisture sensitivity level is elevated to 3 (168 hours). Selection requires circuit redesign for power supply architecture.

WM8523GEDT: This part maintains single-supply operation (2.97V–3.63V) and supports both I2C and SPI interfaces. Operating temperature range extends to -40°C to 85°C, covering the CS4349-DZZ's lower limit. Moisture sensitivity is reduced to level 1 (unlimited). Package is 20-TSSOP, requiring PCB layout modification. This part provides the closest functional match with minimal circuit redesign.

WM8524CGEDT: This part maintains single-supply operation (2.97V–3.63V) and operates across -40°C to 85°C. Moisture sensitivity is level 1 (unlimited). Data interface is I2S rather than SPI, requiring interface adapter circuitry or firmware modification. Package is 16-TSSOP, the smallest footprint, reducing PCB area. Selection requires interface protocol adaptation.

Frequently Asked Questions (FAQ)

Q: Can CS4398K-CZZ directly replace CS4349-DZZ without circuit modification?

A: No. CS4398K-CZZ requires separate analog and digital supply voltages, whereas CS4349-DZZ operates on single supply. Power supply circuitry must be redesigned. Additionally, operating temperature range is limited to -10°C to 70°C.

Q: Which substitute part requires the least design modification?

A: WM8523GEDT requires minimal modification. It maintains single-supply operation, supports SPI interface, and operates across -40°C to 85°C. Only PCB layout adjustment for the 20-TSSOP package is necessary.

Q: What interface adaptation is needed for WM8524CGEDT?

A: WM8524CGEDT uses I2S interface instead of SPI. Firmware or interface controller logic must be modified to generate I2S clock and frame synchronization signals instead of SPI clock and chip select signals.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts (CS4398K-CZZ, WM8523GEDT, WM8524CGEDT) are ROHS3 compliant and REACH unaffected, matching the compliance status of CS4349-DZZ.

Q: What is the impact of moisture sensitivity level differences?

A: CS4349-DZZ has MSL 2 (1 year shelf life). WM8523GEDT and WM8524CGEDT have MSL 1 (unlimited shelf life), providing superior moisture tolerance. CS4398K-CZZ has MSL 3 (168 hours), requiring more stringent moisture control during storage and assembly.

Q: Can package size differences affect PCB assembly?

A: Yes. CS4349-DZZ uses 24-TSSOP; substitutes use 16-TSSOP, 20-TSSOP, or 28-TSSOP. PCB footprint, trace routing, and component placement must be adjusted accordingly. Smaller packages (16-TSSOP, 20-TSSOP) reduce board area; larger packages (28-TSSOP) may require additional routing space.

Q: What is the operating temperature limitation for substitutes?

A: All substitutes operate to 85°C maximum, whereas CS4349-DZZ extends to 105°C. Applications requiring operation above 85°C cannot use these substitutes without thermal management modifications or design alternatives.