WM8731SEDS/RV: High-Performance Audio CODEC IC by Cirrus Logic

The WM8731SEDS/RV is a cutting-edge audio CODEC (Coder-Decoder) integrated circuit developed by Cirrus Logic Inc., a global leader in high-performance analog and digital signal processing solutions. This IC is engineered to deliver studio-grade audio quality in compact, power-efficient designs, making it a top choice for next-generation audio applications. Below, we explore its technical specifications, unique features, and ideal use cases to help you understand why this component stands out in the competitive audio IC market.

Comprehensive Product Overview

Manufacturer & Product Line

Manufactured by Cirrus Logic (NASDAQ: CRUS), the WM8731SEDS/RV is part of the company's acclaimed Wolfson Microelectronics portfolio, known for its innovation in mixed-signal audio technology. It falls under the Interface - CODECs subcategory of Integrated Circuits (ICs).

Availability Status

Currently listed as Last Time Buy (LTB), this IC is in the final stages of production. We recommend immediate procurement for long-term projects requiring this specific audio solution.

In-Depth Technical Specifications

Advanced Audio Architecture

• Type: Stereo Audio CODEC with programmable digital filters
• Data Interface: I S, left-justified, or right-justified serial formats
• Resolution: 24-bit with 64x oversampling
• Sampling Rates: 8kHz to 96kHz for full audio bandwidth support

Premium Conversion Quality

• ADCs/DACs: 2-channel stereo with differential inputs/outputs
• Sigma-Delta Modulation: 3rd-order multi-bit architecture
• THD+N: -85dB (DAC), -80dB (ADC) for pristine signal reproduction
• Dynamic Range: 95dB (DAC), 90dB (ADC)

Power Management Features

• Analog Supply: 2.7V-3.6V with separate LDO bypass
• Digital Supply: 1.42V-3.6V for low-power operation
• Power Consumption: 15mW (DAC playback), 30mW (full operation)
• Power-Down Modes: Software-controlled for energy savings

Package & Environmental Details

• Package Type: 28-pin SSOP with exposed thermal pad
• Dimensions: 5.3mm x 10.2mm x 1.75mm
• Operating Temp: -40 C to +85 C (industrial grade)
• RoHS Compliance: Lead-free and halogen-free

Advanced Applications

Professional Audio Systems

The WM8731SEDS/RV excels in:

• Digital audio workstations (DAWs)
• USB audio interfaces
• Broadcast equipment

Consumer Electronics

• Smartphones and tablets with Hi-Fi audio
• Digital TV and soundbars
• Gaming headsets and consoles

Industrial Implementations

• Voice recognition systems
• Teleconferencing equipment
• Medical audio devices

Competitive Advantages

Superior Audio Performance

The WM8731SEDS/RV outperforms comparable CODECs with:

• 24-bit resolution for CD-quality audio
• 100dB SNR in DAC mode
• Programmable digital filters for customized response

Design Flexibility

• Software-controlled microphone bias
• Programmable ALU for digital mixing
• On-chip headphone amplifier

Reliability Features

• Pop-and-click suppression
• DC offset cancellation
• Comprehensive clock failure detection

Technical Comparison

When benchmarked against similar audio CODECs like the ALC5631 or TLV320AIC23B, the WM8731SEDS/RV demonstrates:

• 15% lower power consumption
• 3-5dB better SNR performance
• Smaller footprint than competing solutions

Implementation Guidelines

Reference Designs

Cirrus Logic provides complete reference designs for:

• USB audio interfaces
• Portable media players
• Digital microphone arrays

Layout Recommendations

• Separate analog and digital ground planes
• Proper decoupling capacitor placement
• Controlled impedance for audio traces

Why Designers Choose WM8731SEDS/RV

Audio engineers consistently select this IC for its:

1. Best-in-class signal integrity
2. Flexible digital interface options
3. Comprehensive evaluation kit support
4. Proven reliability in mass production

Obsolete Part Alternatives

For designers needing current-generation alternatives, consider:

• WM8731SEDS/RV's successor: WM8731L
• Higher-performance option: WM8740
• Lower-power alternative: WM8524

Conclusion

The WM8731SEDS/RV represents the pinnacle of audio CODEC technology, combining Cirrus Logic's expertise in analog design with advanced digital processing. Its 24-bit resolution, exceptional 100dB SNR, and flexible power options make it ideal for demanding audio applications across consumer, professional, and industrial markets. While availability is limited due to its Last Time Buy status, this IC remains an excellent choice for designs requiring proven, high-performance audio conversion.

For engineers seeking uncompromising audio quality in a compact footprint, the WM8731SEDS/RV delivers exceptional value. Contact our sales team today to discuss your application requirements and secure remaining inventory before this high-performance audio CODEC becomes unavailable.