DESCRIPTION

The WM8952 is a low power, high quality mono ADC designed for portable applications such as wireless microphones or headsets.

The device integrates support for differential or single ended microphone connections. External component requirements are reduced as no separate microphone amplifier is required.

FEATURES

• Mono ADC:

• Audio sample rates:8, 11.025, 16, 22.05, 24, 32, 44.1, 48kHz

• ADC SNR 94dB, THD -80dB (‘A’-weighted @ 8 – 48ks/s)

• Mic Preamps :

• Differential or single end Microphone Interface

- Programmable preamp gain

- Pseudo differential inputs with common mode rejection

- Programmable ALC / Noise Gate in ADC path

• Low-noise bias supplied for electret microphones

• Multiple analog or ‘Aux’ inputs with analogue mixing

OTHER FEATURES

• Programmable high pass filter (wind noise reduction)

• 4 notch filters (narrowband noise suppression)

• On-chip PLL

• Low power, low voltage

- 2.5V to 3.6V (digital: 1.71V to 3.6V)

• 28 ball W-CSP (2.59 × 2.5 × 0.7mm, 0.4mm pitch) Package

APPLICATIONS

• Headsets

• Wireless microphones

• General purpose mono audio ADC