WM8973CLGEFL/RV

Overview

The WM8973CLGEFL/RV is a stereo CODEC designed for portable digital audio applications. It integrates complete interfaces to stereo or mono microphones and a stereo headphone, eliminating the need for separate amplifiers. The device features on-chip DSP for graphic equalizer, 3-D sound enhancement, and automatic level control. It supports master/slave modes with various clock frequencies including 12MHz/24MHz for USB or standard 256fs rates. Supply voltages range from 1.8V to 3.6V for analogue sections and 1.42V to 3.6V for the digital core. Key electrical parameters include DAC SNR of 98dB (A-weighted) and ADC SNR of 95dB at 48kHz. It operates in a 32-lead QFN package measuring 5x5x0.9mm.

Feature Summary

• Integrates high-quality stereo ADCs and DACs with advanced on-chip digital signal processing capabilities.
• Includes a 400mW BTL speaker driver and a capless headphone driver requiring no external DC blocking capacitors.
• Supports flexible clocking schemes generating sample rates directly from master clocks without an external PLL.
• Features separately mixed mono output and programmable ALC/noise gate for microphone inputs.

Applications

• MP3 Player / Recorder
• AAC/WMA/Multi-Format Player / Recorder
• Minidisc Player / Recorder
• Portable Digital Music Systems

Procurement Notes

Verify the ordering suffix RV indicates tape and reel packaging with a reel quantity of 3500 units. Confirm the component meets MSL3 moisture sensitivity standards and can withstand peak soldering temperatures up to 260°C. Ensure the specified temperature range of -25°C to +85°C aligns with your application requirements.

Selection Notes

Select this component when a low-power stereo codec with integrated speaker and headphone drivers is required. It is suitable for designs needing flexible clock generation without an external PLL. Consider the 5x5mm QFN package size for space-constrained portable systems. Verify supply voltage compatibility with the 1.8V to 3.6V analogue and 1.42V to 3.6V digital core ranges.

Part Context

The WM8973L series is a stereo CODEC family originally developed by Wolfson Microelectronics plc, now part of Cirrus Logic. This specific variant, WM8973CLGEFL/RV, belongs to the production data line intended for portable audio applications. It shares architectural similarities with other members like the WM8978 but offers distinct power and interface configurations tailored for compact digital music devices.

Replacement Considerations

WM8973CLGEFL/V is the non-reel equivalent of this component.

FAQ

Does the WM8973CLGEFL/RV require an external phase-locked loop (PLL)?

No, the device generates audio sample rates directly from the master clock without the need for an external PLL.

What is the maximum output power for the speaker driver?

The on-chip BTL speaker driver can deliver up to 400mW, with an absolute maximum power output of 500mW (rms).

Can the headphone output operate without DC blocking capacitors?

Yes, the device supports a capless mode where no DC blocking capacitors are required for the headphone output.