WOLFSON WM8978 WM8978GEFL Stereo CODEC With Speaker Driver

Features

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FEATURES

Stereo Codec:

DAC SNR 98dB, THD -84dB (‘A’ weighted @ 48kHz)

ADC SNR 90dB, THD -80dB (‘A’ weighted @ 48kHz)

On-chip Headphone Driver with ‘capless’ option

- 40mW output power into 16Ω / 3.3V SPKVDD

0.9W output power into 8Ω BTL speaker / 5V SPKVDD

- Capable of driving piezo speakers

- Stereo speaker drive configuration

Mic Preamps:

Stereo Differential or mono microphone Interfaces

- Programmable preamp gain

- Psuedo differential inputs with common mode rejection

- Programmable ALC / Noise Gate in ADC path

Low-noise bias supplied for electret microphones

Other features:

Enhanced 3-D function for improved stereo separation

Digital playback limiter

5-band Equaliser (record or playback)

Programmable ADC High Pass Filter (wind noise reduction)

Programmable ADC Notch Filter

Aux inputs for stereo analog input signals or ‘beep’

On-chip PLL supporting 12, 13, 19.2MHz and other clocks

Low power, low voltage

- 2.5V to 3.6V (digital core: 1.62V to 3.6V)

- power consumption <30mW all-on with 2.5V supplies

5x5mm 32-pin QFN package