WM8941GEFL/V Equivalent & Substitute Parts

Part Overview

The WM8941GEFL/V is a mono speaker driver codec manufactured by Cirrus Logic Inc., designed for audio interface applications with integrated analog-to-digital and digital-to-analog conversion capabilities. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

WM8941GEFL/V

Cirrus Logic Inc.In Stock: 9859WM8941GEFL/V Datasheet

Current PartRFQ

WM8944BECS/R

Cirrus Logic Inc.In Stock: 3977WM8944BECS/R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WM8941GEFL/V is determined by the following critical parameters:

• Resolution: 24-bit conversion capability
• ADC/DAC Configuration: Single ADC and single DAC channel
• Sigma Delta Architecture: Required
• Signal-to-Noise Ratio: ADC ≥ 91 dB, DAC ≥ 98 dB
• Analog Supply Voltage Range: Compatibility with 2.5V ~ 3.6V
• Digital Supply Voltage Range: Compatibility with 1.71V ~ 3.6V
• Operating Temperature Range: Minimum -25°C to maximum 85°C
• Surface Mount Capability: Required

The WM8944BECS/R meets these substitution criteria while offering enhanced specifications in certain parameters and active product status.

Parameter Comparison

Engineering Selection Recommendations

The WM8944BECS/R is qualified as a direct substitute for the WM8941GEFL/V based on the following factors:

• Both components are manufactured by Cirrus Logic Inc. and share identical 24-bit resolution and 1/1 ADC/DAC configuration with Sigma Delta architecture.
• The WM8944BECS/R maintains signal-to-noise performance within acceptable parameters, with ADC performance improved to 94 dB and DAC performance at 96 dB.
• Supply voltage ranges are compatible, with the substitute offering extended lower limits (2.4V analog, 1.62V digital) and identical upper limits.
• Operating temperature range is extended on the substitute (-40°C to 85°C versus -25°C to 85°C), providing broader environmental compatibility.
• The WM8944BECS/R holds active product status, ensuring long-term availability and supply chain continuity.
• RoHS3 compliance on the substitute aligns with current regulatory requirements.
• Moisture sensitivity is improved (MSL 1 versus MSL 3), reducing handling and storage constraints.

Frequently Asked Questions (FAQ)

Q: Can the WM8944BECS/R directly replace the WM8941GEFL/V in existing designs?

A: The WM8944BECS/R meets all critical electrical and functional parameters required for substitution. However, package differences (28-WFQFN versus 25-W-CSP) require PCB layout modification. Verify data interface compatibility with your system controller, as the substitute supports I2C and SPI protocols.

Q: What are the key differences between these components?

A: Primary differences include package form factor, data interface protocols, product status, and moisture sensitivity classification. The substitute offers improved ADC signal-to-noise ratio, extended operating temperature range, and active availability.

Q: Are there any supply voltage compatibility concerns?

A: Both components operate within overlapping supply ranges. The WM8944BECS/R accepts lower minimum voltages (2.4V analog, 1.62V digital) while maintaining identical maximum limits, providing enhanced flexibility for power supply design.

Q: What is the impact of the different package types?

A: The WM8941GEFL/V uses 28-WFQFN (4x4) packaging, while the WM8944BECS/R uses 25-W-CSP (2.41x2.41) packaging. This requires complete PCB redesign for footprint, trace routing, and thermal management considerations.

Q: Does the substitute support the same data interfaces?

A: The WM8944BECS/R explicitly supports I2C and SPI interfaces. The original part's data interface specification is not provided. Confirm your system's interface requirements before substitution.

Q: What is the significance of the MSL rating difference?

A: The WM8941GEFL/V has MSL 3 (168-hour floor life), requiring controlled storage and handling. The WM8944BECS/R has MSL 1 (unlimited floor life), eliminating moisture-related handling constraints and reducing production risk.