CS43L22-CNZR Equivalent & Substitute Parts

Part Overview

The CS43L22-CNZR is a 24-bit audio digital-to-analog converter (DAC) manufactured by Cirrus Logic Inc., designed for stereo audio applications with a 96 kHz sampling rate and I2S data interface. The device operates on a dual supply voltage range of 1.65V to 2.63V and is housed in a 40-pin QFN package with exposed pad. Currently classified as Last Time Buy, this part requires identification of suitable alternatives for ongoing design requirements and inventory planning.

Substiute Parts

CS43L22-CNZR

Cirrus Logic Inc.In Stock: 119583CS43L22-CNZR Datasheet

Current PartRFQ

WM8962BECSN/R

Cirrus Logic Inc.In Stock: 6197WM8962BECSN/R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS43L22-CNZR is determined by the following critical parameters:

• Audio Resolution and Channels: 24-bit stereo capability
• Sampling Rate: 96 kHz minimum support
• Data Interface Compatibility: I2S or equivalent digital audio interface
• Operating Temperature Range: -40°C to 85°C
• Supply Voltage Compatibility: Overlapping voltage ranges for both analog and digital supplies
• Package Compatibility: Surface mount technology with compatible pin count and footprint considerations
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The WM8962BECSN/R qualifies as a substitute based on shared manufacturer origin, dual-channel stereo audio capability, 24-bit resolution, compatible operating temperature range, and equivalent regulatory compliance. However, functional differences exist in interface architecture and package form factor.

Parameter Comparison

Engineering Selection Recommendations

The WM8962BECSN/R is available as an active product from the same manufacturer, providing continuity of supply compared to the CS43L22-CNZR Last Time Buy status. Both devices maintain ROHS3 compliance and REACH unaffected regulatory standing, suitable for equivalent compliance requirements.

Selection between these parts requires evaluation of the following factors:

• Interface Requirements: The CS43L22-CNZR uses I2S for audio data, while the WM8962BECSN/R supports I2C and SPI control interfaces with I2S audio capability. Existing designs using I2S audio streaming remain compatible with the WM8962BECSN/R.
• Integrated Functionality: The WM8962BECSN/R includes integrated ADC functionality (2 channels), whereas the CS43L22-CNZR is DAC-only. This may introduce additional features or complexity depending on application requirements.
• Package Footprint: The WM8962BECSN/R uses a smaller 49-pin CSP package (3.6x3.9 mm) compared to the 40-pin QFN (6x6 mm) of the CS43L22-CNZR. PCB layout redesign is required for physical substitution.
• Supply Voltage Ranges: The WM8962BECSN/R offers wider digital supply voltage range (1.62V ~ 3.6V) compared to the CS43L22-CNZR, providing greater flexibility in mixed-voltage systems.
• Moisture Sensitivity: The WM8962BECSN/R has MSL 1 rating versus MSL 3 for the CS43L22-CNZR, indicating lower moisture sensitivity and reduced handling constraints during assembly.

Frequently Asked Questions (FAQ)

Q: Can the WM8962BECSN/R directly replace the CS43L22-CNZR without PCB modifications?

A: No. The WM8962BECSN/R uses a 49-pin CSP package (3.6x3.9 mm) while the CS43L22-CNZR uses a 40-pin QFN package (6x6 mm). PCB layout redesign is required for physical substitution.

Q: Are the audio interface protocols compatible between these parts?

A: Both devices support I2S audio data streaming at 24-bit resolution and 96 kHz sampling rate. The WM8962BECSN/R additionally supports I2C and SPI control interfaces, providing greater flexibility than the CS43L22-CNZR I2S-only interface.

Q: What are the supply voltage compatibility considerations?

A: The CS43L22-CNZR requires 1.65V ~ 2.63V for both analog and digital supplies. The WM8962BECSN/R requires 1.7V ~ 2V for analog supply and 1.62V ~ 3.6V for digital supply. Verify that your power distribution design accommodates the WM8962BECSN/R specifications before substitution.

Q: Does the WM8962BECSN/R include ADC functionality?

A: Yes. The WM8962BECSN/R integrates 2 ADC channels and 2 DAC channels, whereas the CS43L22-CNZR is a DAC-only device. If your application requires DAC-only functionality, the integrated ADC may introduce unnecessary complexity or power consumption.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the CS43L22-CNZR and WM8962BECSN/R operate across -40°C to 85°C, maintaining equivalent thermal performance specifications.

Q: What is the significance of the different MSL ratings?

A: The CS43L22-CNZR has MSL 3 (168-hour floor life), while the WM8962BECSN/R has MSL 1 (unlimited floor life). MSL 1 indicates lower moisture absorption and reduced handling constraints during assembly and storage, providing operational advantages in high-humidity environments.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the CS43L22-CNZR and WM8962BECSN/R are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for restricted substance compliance.