CS5343-DZZR Equivalent & Substitute Parts

Part Overview

The CS5343-DZZR is a 24-bit audio analog-to-digital converter manufactured by Cirrus Logic Inc., designed for data acquisition applications requiring serial digital output. This device operates at a 96 kHz sampling rate with dual-channel audio input capability and supports dual supply voltage ranges (3.1V–4.6V and 4.75V–5.25V). The part is classified as Last Time Buy, indicating end-of-life status and limited availability. Identifying equivalent substitute parts is necessary to ensure continued design support and procurement viability for new production runs or design revisions.

Substiute Parts

CS5343-DZZR

Cirrus Logic Inc.In Stock: 10086CS5343-DZZR Datasheet

Current PartRFQ

CS5361K-DZZR

Cirrus Logic Inc.In Stock: 11679CS5361K-DZZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5343-DZZR is based on the following core electrical and mechanical parameters:

• 24-bit resolution audio ADC functionality
• Dual-channel input configuration
• Serial or I2S digital output interface compatibility
• Surface mount packaging with compatible pinout and footprint considerations
• Voltage supply compatibility within specified operating ranges
• Operating temperature range coverage
• RoHS3 compliance and regulatory alignment

The CS5361K-DZZR qualifies as a manufacturer-recommended substitute based on matching resolution (24 bits), channel count (2), and core ADC audio functionality. However, key differences exist in sampling rate (192 kHz vs. 96 kHz), data interface (I2S vs. Serial), package size (24-TSSOP vs. 10-TSSOP), and operating temperature range, which must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The CS5361K-DZZR is the manufacturer-recommended substitute for the CS5343-DZZR and carries Active product status, ensuring continued availability and support. Both devices maintain ROHS3 compliance and are manufactured by Cirrus Logic Inc., providing regulatory and supply chain continuity.

Selection between these parts must account for the following differences:

The CS5361K-DZZR supports higher sampling rates (192 kHz vs. 96 kHz) and uses I2S digital interface instead of Serial output. The substitute device operates at a reduced maximum temperature (+85°C vs. +105°C) and requires a larger package footprint (24-TSSOP vs. 10-TSSOP), which impacts PCB layout and board space allocation. The CS5361K-DZZR also specifies separate analog and digital supply sources, whereas the CS5343-DZZR operates from a single supply.

For applications requiring the original 96 kHz sampling rate, Serial interface output, extended temperature operation to +105°C, or minimal board space, the CS5343-DZZR specifications must be retained. For applications compatible with higher sampling rates, I2S interface, and standard temperature ranges, the CS5361K-DZZR provides an active, supported alternative.

Frequently Asked Questions (FAQ)

Q: Can the CS5361K-DZZR directly replace the CS5343-DZZR without design changes?

A: Direct replacement is not possible without design modifications. The CS5361K-DZZR uses a 24-TSSOP package (larger footprint) versus the 10-TSSOP package of the CS5343-DZZR, requiring PCB layout changes. The I2S digital interface differs from the Serial interface, necessitating firmware or signal processing adjustments. Separate analog and digital supply pins on the CS5361K-DZZR require modified power distribution design compared to the single-supply architecture of the CS5343-DZZR.

Q: What are the key compatibility criteria for substitution?

A: Substitution eligibility is determined by: 24-bit resolution matching, dual-channel audio input capability, surface mount technology compatibility, ROHS3 compliance alignment, and operating voltage range overlap. The CS5361K-DZZR meets these core criteria. Application-specific requirements such as sampling rate, interface protocol, temperature range, and package size must be independently verified.

Q: Does the higher sampling rate of the CS5361K-DZZR affect compatibility?

A: The 192 kHz sampling rate of the CS5361K-DZZR exceeds the 96 kHz specification of the CS5343-DZZR. For applications designed to operate at 96 kHz, the substitute device can operate at the lower rate if the digital interface and firmware support this configuration. However, this must be confirmed with the specific application architecture and signal processing chain.

Q: What is the impact of the different data interfaces?

A: The CS5343-DZZR outputs Serial format data, while the CS5361K-DZZR uses I2S format. These are distinct digital audio protocols requiring different receiver hardware and firmware implementations. Direct substitution without interface conversion is not feasible.

Q: Are there temperature range limitations with the CS5361K-DZZR?

A: The CS5361K-DZZR operates from −40°C to +85°C, compared to −40°C to +105°C for the CS5343-DZZR. Applications requiring operation above +85°C cannot use the CS5361K-DZZR as a substitute.

Q: What are the moisture sensitivity differences?

A: The CS5343-DZZR carries MSL 2 (1 Year floor life), while the CS5361K-DZZR carries MSL 3 (168 Hours floor life). MSL 3 requires more stringent moisture control during storage and handling, with a shorter allowable time outside controlled humidity environments before reflow soldering.