CS5343-CZZ Equivalent & Substitute Parts

Part Overview

The CS5343-CZZ 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. 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 supply chain reliability for applications currently utilizing this component.

Substiute Parts

CS5343-CZZ

Cirrus Logic Inc.In Stock: 2065CS5343-CZZ Datasheet

Current PartRFQ

CS5361K-DZZ

Cirrus Logic Inc.In Stock: 2353CS5361K-DZZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Resolution: 24-bit audio ADC capability
• Number of Channels: Dual-channel (2-channel) processing
• Operating Temperature Range: −40°C to +85°C
• RoHS Compliance: ROHS3 Compliant status
• Mounting Type: Surface Mount technology

The substitute part CS5361K-DZZ maintains core functional equivalence through matching resolution (24 bits), channel count (2 channels), operating temperature range (−40°C to +85°C), and RoHS compliance (ROHS3). However, the substitute introduces differences in sampling rate (192 kHz vs. 96 kHz), data interface (I2S vs. Serial), package form factor (24-TSSOP vs. 10-TSSOP), and supply voltage configuration. These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The CS5361K-DZZ is an active product from the same manufacturer, providing continued supply availability compared to the CS5343-CZZ Last Time Buy status. Both components maintain ROHS3 compliance and identical operating temperature specifications (−40°C to +85°C), supporting equivalent environmental performance.

Selection of CS5361K-DZZ requires design accommodation for the following differences:

• Package footprint change: 10-TSSOP to 24-TSSOP requires PCB layout modification
• Data interface change: Serial to I2S requires firmware and signal routing updates
• Sampling rate capability: 192 kHz vs. 96 kHz (higher capability; applications limited to 96 kHz operation remain compatible)
• Supply architecture: Single supply to separate analog/digital supplies requires power distribution redesign
• Moisture sensitivity: MSL 2 to MSL 3 affects storage and handling procedures

The substitute part is suitable only for applications where design modifications to accommodate these parameter differences are feasible and acceptable.

Frequently Asked Questions (FAQ)

Q: Can CS5361K-DZZ directly replace CS5343-CZZ without PCB modifications?

A: No. The package change from 10-TSSOP to 24-TSSOP requires PCB layout redesign. Additionally, the data interface change from Serial to I2S necessitates signal routing and firmware modifications.

Q: Are both parts compatible with the same supply voltage?

A: Partial compatibility exists. Both support the 4.75V–5.25V range. The CS5343-CZZ additionally supports 3.1V–4.6V operation, while the CS5361K-DZZ supports 3.1V–5.25V. The CS5361K-DZZ requires separate analog and digital supply pins, whereas the CS5343-CZZ uses a single supply architecture.

Q: What is the impact of the 192 kHz sampling rate on applications designed for 96 kHz?

A: Applications designed for 96 kHz operation remain compatible with the CS5361K-DZZ, as the higher sampling rate capability is backward compatible. No functional degradation occurs when operating at lower sampling rates.

Q: How do the moisture sensitivity levels differ between these parts?

A: The CS5343-CZZ has MSL 2 (1 Year shelf life), while the CS5361K-DZZ has MSL 3 (168 Hours shelf life). MSL 3 requires more stringent moisture control during storage and handling, with shorter allowable exposure times before reflow soldering.

Q: Is the CS5361K-DZZ suitable for new designs?

A: Yes. The CS5361K-DZZ is in Active product status, making it appropriate for new designs. The CS5343-CZZ Last Time Buy status makes it unsuitable for new applications.