CS4350-CZZ Equivalent & Substitute Parts

Part Overview

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

The CS4350-CZZ has reached Last Time Buy status, indicating end-of-life production. Identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term product availability assurance.

Key Parameters

Parameter	CS4350-CZZ
Resolution	24 bits
Sampling Rate	192 kHz
Number of Channels	2
Data Interface	SPI
Voltage Supply Source	Single Supply
Operating Temperature Range	-40°C to 85°C
Package Type	24-TSSOP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the CS4350-CZZ are identified 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 fidelity equivalence.
Number of Channels: All substitutes provide 2-channel DAC 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 interface and requires interface protocol adaptation.
Supply Voltage: CS4350-CZZ operates on single supply. WM8523GEDT and WM8524CGEDT maintain single-supply operation. CS4398K-CZZ requires dual analog and digital supplies.
Operating Temperature: WM8523GEDT and WM8524CGEDT match the -40°C to 85°C range. CS4398K-CZZ operates within -10°C to 70°C, a narrower range.
Package Form Factor: All substitutes use TSSOP surface-mount packages with varying pin counts (16, 20, or 28 pins), requiring PCB layout modification.
Compliance: All parts maintain ROHS3 compliance and REACH unaffected status.

Parameter Comparison

Parameter	CS4350-CZZ	CS4398K-CZZ	WM8523GEDT	WM8524CGEDT
Manufacturer	Cirrus Logic Inc.	Cirrus Logic Inc.	Cirrus Logic Inc.	Cirrus Logic Inc.
Resolution (Bits)	24	24	24	24
Sampling Rate (kHz)	192	192	192	192
Number of Channels	2	2	2	2
Data Interface	SPI	I2C, SPI	I2C, SPI	I2S
Voltage Supply Source	Single Supply	Analog and Digital	Single Supply	Single Supply
Operating Temperature (°C)	-40 to 85	-10 to 70	-40 to 85	-40 to 85
Package / Case	24-TSSOP	28-TSSOP	20-TSSOP	16-TSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)
Product Status	Last Time Buy	Active	Active	Active

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 analog and digital supply voltages and operates within a narrower temperature range (-10°C to 70°C). The 28-TSSOP package requires PCB redesign. Select this substitute when dual-supply capability is available and temperature operating range requirements do not exceed -10°C to 70°C.

WM8523GEDT: This part maintains active status and matches the CS4350-CZZ operating temperature range (-40°C to 85°C). It supports both I2C and SPI interfaces and operates on single supply. The 20-TSSOP package is smaller than the original 24-TSSOP, reducing PCB footprint. Moisture sensitivity is improved (MSL 1 vs. MSL 3). Select this substitute for applications requiring extended temperature range and improved moisture handling.

WM8524CGEDT: This part offers the smallest package footprint (16-TSSOP) and highest inventory availability (39,200 units). It maintains active status, single-supply operation, and full temperature range compatibility (-40°C to 85°C). The data interface is I2S rather than SPI, requiring firmware and interface protocol modification. Moisture sensitivity is improved (MSL 1). Select this substitute when I2S interface integration is feasible and maximum component availability is prioritized.

Frequently Asked Questions (FAQ)

Q: Can CS4398K-CZZ directly replace CS4350-CZZ without design changes?

A: No. CS4398K-CZZ requires dual analog and digital supply voltages, whereas CS4350-CZZ operates on single supply. The package changes from 24-TSSOP to 28-TSSOP, requiring PCB layout modification. Both SPI and I2C interface support are available on CS4398K-CZZ, but power supply architecture must be redesigned.

Q: Which substitute part requires the least PCB modification?

A: WM8523GEDT requires the most minimal modification among substitutes while maintaining SPI interface compatibility. The 20-TSSOP package is smaller than the original 24-TSSOP but uses the same pin pitch. SPI interface operation is directly compatible with CS4350-CZZ firmware.

Q: What is the primary limitation of WM8524CGEDT as a substitute?

A: WM8524CGEDT uses I2S data interface instead of SPI. This requires firmware modification and interface protocol changes in the host system. However, it offers the smallest package size and highest inventory availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts (CS4398K-CZZ, WM8523GEDT, WM8524CGEDT) maintain ROHS3 compliance and REACH unaffected status, matching the original CS4350-CZZ compliance profile.

Q: How does operating temperature range affect substitute selection?

A: CS4350-CZZ and both WM8523GEDT and WM8524CGEDT operate across -40°C to 85°C. CS4398K-CZZ operates within -10°C to 70°C. For applications requiring full -40°C to 85°C operation, CS4398K-CZZ is not suitable.

Q: What is the moisture sensitivity difference between the main part and substitutes?

A: CS4350-CZZ has MSL 3 (168 hours). WM8523GEDT and WM8524CGEDT have MSL 1 (unlimited), indicating improved moisture resistance and reduced bake-out requirements during assembly.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message