WM8978CGEFL/V

Overview

The WM8978CGEFL/V is a stereo audio codec manufactured by Cirrus Logic, housed in a 32-pin QFN package. It integrates stereo DACs and ADCs with headphone and speaker drivers. The device supports I2S and PCM interfaces with 16-bit and 24-bit resolution at sampling rates up to 48 kHz. Key electrical parameters include a DAC signal-to-noise ratio of 98 dB and an ADC signal-to-noise ratio of 95 dB. The headphone output delivers 40 mW per channel into a 16-ohm load, while the speaker output provides up to 1 W in bridge-tied load mode with an 8-ohm load. Operating voltage ranges from 2.5 V to 3.6 V.

Feature Summary

• Integrates high-fidelity stereo digital-to-analog and analog-to-digital converters with dedicated output drivers for headphones and speakers.
• Includes advanced on-chip digital signal processing capabilities such as a five-band equalizer, 3D surround sound, and automatic level control.
• Features flexible digital audio interfaces supporting both master and slave modes via I2S or PCM protocols.

Applications

• Portable multimedia phones
• Digital cameras and camcorders
• Portable media players

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Ensure supply chain documentation matches the specific suffix requirements for the requested variant.

Selection Notes

Select this component when a compact solution combining high-quality stereo conversion with integrated power amplification is required. Evaluate the 32-pin QFN footprint against available PCB space. Consider the internal DSP features if post-processing functions like equalization are needed without external microcontrollers.

Part Context

This model represents a stereo upgrade over the mono WM8974 series. It consolidates audio input and output stages into a single chip, reducing external component count. The design targets portable electronics requiring high audio fidelity within strict power and size limitations.

Replacement Considerations

The WM8974 serves as a functional predecessor but offers only mono output. Verify pin compatibility and register mapping differences before substitution. No other direct equivalent part numbers are confirmed in public documentation.