WM8976CGEFL/RV

Overview

The WM8976CGEFL/RV is a low-power stereo audio CODEC designed for portable multimedia applications. It integrates a high-quality DAC and ADC, differential microphone preamplifiers, headphone drivers, and speaker amplifiers within a single 32-lead QFN package. The device supports I2S and PCM digital audio interfaces with master or slave modes. Key electrical specifications include a DAC SNR of 98 dB and an ADC SNR of 95 dB at 48 kHz sampling rate. Headphone outputs deliver 40 mW per channel into 16 Ω loads, while the bridge-tied load (BTL) speaker driver provides up to 1 W output power into 8 Ω when supplied with 5 V. The chip operates with analogue supplies from 2.5 V to 3.6 V and a digital core voltage as low as 1.71 V.

Feature Summary

• Integrates stereo DAC/ADC, microphone preamps, headphone drivers, and BTL speaker amplifier in a compact QFN package.
• Includes advanced on-chip DSP features such as a 5-band equalizer, automatic level control, and digital limiter.
• Supports flexible input/output configurations including differential microphone inputs and pseudo-differential line outputs.
• Features an internal PLL capable of generating audio clocks from common reference frequencies like 12 MHz and 13 MHz.

Applications

• Multimedia phones
• Digital still cameras
• Stereo camcorders

Procurement Notes

Verify the specific ordering suffix 'RV' indicates tape and reel packaging with a reel quantity of 3,500 units. Confirm the component meets MSL3 moisture sensitivity standards and can withstand peak soldering temperatures up to 260°C during assembly processes.

Selection Notes

Select this component when a complete audio solution is required without external amplifiers. Ensure the application supports the 5V SPKVDD supply if maximum speaker output power is needed. Verify that the host controller can interface with the supported 2-wire or 3-wire serial control protocols.

Part Context

This part is manufactured by Cirrus Logic, formerly Wolfson Microelectronics. It serves as a comprehensive audio subsystem for battery-powered devices, replacing discrete amplifier and codec combinations. The device is available in a lead-free, RoHS-compliant 5x5 mm QFN package suitable for space-constrained designs.

Replacement Considerations

WM8976CGEFL/V is the non-reel version of the same functional device. Other models in the series include WM8978 and WM8974, though these offer different feature sets and pinouts.