WM8904CGEFL/V

Overview

The WM8904CGEFL/V is a high-performance stereo CODEC designed for portable audio applications. It features Class-W ground-referenced headphone amplifiers and line outputs that eliminate AC coupling capacitors. The device supports 24-bit resolution with standard sample rates from 8kHz to 96kHz. Typical SNR performance is 91dB for the ADC and 96dB for the DAC. Quiescent power consumption is 3.0mW for DAC-to-headphone playback and 2.4mW for analogue bypass. It operates on a single 1.8V supply, with an optional 1.0V digital core supply. The component is housed in a 32-pin QFN package (4x4mm) with a -40°C to +85°C operating temperature range.

Feature Summary

• Class-W ground-referenced output drivers eliminate AC coupling capacitors
• Integrated control write sequencer minimizes startup pops and clicks
• ReTune Mobile 5-band parametric equalizer optimizes speaker characteristics
• Digital Dynamic Range Controller provides compression and anti-clip protection

Applications

• Portable multimedia players
• Multimedia handsets
• Handheld gaming devices
• Wireless headsets
• Mobile internet devices

Procurement Notes

Verify the specific ordering suffix 'V' indicates the tape and reel packaging variant when sourcing components. Confirm moisture sensitivity level MSL3 compliance for surface mount assembly processes. Ensure the selected distributor sources directly from Cirrus Logic or authorized channels to guarantee authenticity and traceability of the integrated circuit.

Selection Notes

Select this model for designs requiring ultra-low power consumption without external output coupling capacitors. The integrated Class-W amplifier architecture simplifies board layout by removing bulky passive components. Verify system clock requirements against the integrated FLL capabilities if precise synchronization is needed for the target application environment.

Part Context

This component belongs to the WM8904 series of ultra-low-power stereo CODECs. It shares functional similarities with other Wolfson/Cirrus Logic audio processors but is distinctively optimized for battery-operated portable devices. The CGEFL/V designation specifies the lead-free 32-pin QFN package configuration within the broader product family.

Replacement Considerations

WM8904CGEFL/RV: Identical electrical specifications; differs only in packaging format (reel vs. cut tape).

FAQ

How does the WM8904 handle ground noise rejection?

Both the headphone and line outputs include common mode feedback paths specifically designed to reject ground noise.

What is the purpose of the Control Write Sequencer?

It allows pre-loading of audio path setup sequences to reduce software driver development and minimize audible pops during startup and shutdown.

Can the WM8904 support digital microphones?

Yes, it includes a stereo digital microphone interface with a choice of two inputs.