CS4341A-KSZ Equivalent & Substitute Parts

Part Overview

The CS4341A-KSZ is a 24-bit audio digital-to-analog converter (DAC) manufactured by Cirrus Logic Inc., designed for high-fidelity audio applications with a 192 kHz sampling rate. This component operates as a single-supply device with SPI data interface and is housed in a 16-SOIC surface mount package. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

CS4341A-KSZ

Cirrus Logic Inc.In Stock: 16282CS4341A-KSZ Datasheet

Current PartRFQ

CS4344-CZZ

Cirrus Logic Inc.In Stock: 24657CS4344-CZZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS4341A-KSZ is determined by the following core electrical and mechanical parameters:

Critical Matching Parameters:

• Number of Channels: 2
• Resolution: 24 bits
• Sampling Rate: 192 kHz
• Voltage Supply Source: Single Supply
• Operating Temperature Range: −10°C to +70°C
• Mounting Type: Surface Mount

Allowable Variations:

• Data Interface: SPI to I2S (both are serial digital audio interfaces compatible with 24-bit, 192 kHz audio data transmission)
• Package / Case: 16-SOIC to 10-TSSOP (both are surface mount packages; pin count and physical dimensions differ but do not prevent functional substitution when PCB layout is adapted)
• Voltage Supply Range: Minor variations within single-supply operation (3V–3.6V vs. 3V–3.47V; both support 5V operation)
• Moisture Sensitivity Level: 3 to 2 (lower MSL indicates better moisture tolerance)

The CS4344-CZZ meets all critical parameters and represents a valid substitute with noted interface and package differences.

Parameter Comparison

Engineering Selection Recommendations

CS4344-CZZ as Primary Substitute:

The CS4344-CZZ is designated as the manufacturer-recommended substitute for the CS4341A-KSZ. Both devices share identical core audio specifications: 24-bit resolution, 192 kHz sampling rate, 2-channel configuration, and single-supply operation across the same temperature range.

Product Status Consideration:

The CS4341A-KSZ is classified as obsolete, while the CS4344-CZZ carries a Last Time Buy status. This distinction indicates that the CS4344-CZZ remains available for procurement but with a defined end-of-life window. Selection of the CS4344-CZZ provides access to active inventory (24,600 units reported in stock) and extends design support beyond the obsolete CS4341A-KSZ.

Compliance Advantage:

The CS4344-CZZ is ROHS3 compliant, whereas compliance status is not specified for the CS4341A-KSZ. Both devices are REACH unaffected and carry identical ECCN and HTSUS classifications.

Interface and Package Trade-offs:

The data interface differs (SPI vs. I2S); both are standard serial digital audio protocols. The package changes from 16-SOIC to 10-TSSOP, resulting in a smaller footprint and reduced pin count. PCB layout modification is required to accommodate the different package geometry and pinout.

Moisture Sensitivity:

The CS4344-CZZ offers improved moisture tolerance (MSL 2, 1 Year) compared to the CS4341A-KSZ (MSL 3, 168 Hours), reducing handling and storage risk.

Frequently Asked Questions (FAQ)

Q: Can the CS4344-CZZ directly replace the CS4341A-KSZ without PCB modification?

A: No. The CS4344-CZZ uses a different package (10-TSSOP vs. 16-SOIC) and has a different pinout. PCB layout redesign is required. Additionally, the data interface differs (I2S vs. SPI), necessitating firmware or control logic adaptation.

Q: What is the primary difference between SPI and I2S interfaces in this context?

A: Both SPI and I2S are serial digital audio interfaces capable of transmitting 24-bit audio data at 192 kHz. SPI is a general-purpose synchronous serial protocol, while I2S is specifically optimized for audio applications. The selection depends on the host system's interface capability and firmware implementation.

Q: Why is the CS4344-CZZ smaller (10-TSSOP) than the CS4341A-KSZ (16-SOIC)?

A: The CS4344-CZZ achieves a smaller package through optimized pin configuration and integration. The 10-TSSOP package accommodates the essential signal and power pins while reducing overall component footprint.

Q: Is the CS4344-CZZ suitable for new designs?

A: The CS4344-CZZ carries a Last Time Buy status, indicating it remains available but with a defined procurement window. For new designs requiring long-term component availability, consultation with Cirrus Logic regarding current-generation audio DAC alternatives is recommended.

Q: Are the voltage supply ranges compatible?

A: Both devices operate as single-supply components and support 5V operation. The CS4341A-KSZ specifies 3V–3.6V, while the CS4344-CZZ specifies 3V–3.47V. Both ranges overlap sufficiently for standard 3.3V and 5V supply systems.

Q: What does MSL 2 vs. MSL 3 mean for component handling?

A: MSL (Moisture Sensitivity Level) indicates the maximum time a component can be exposed to ambient conditions before soldering. MSL 3 allows 168 hours; MSL 2 allows 1 year. The CS4344-CZZ's MSL 2 rating provides greater flexibility in storage and handling procedures.