DESCRIPTION

The WM8950 is a low power, high quality mono ADC designed for  portable  applications  such  as  Digital  Still  Camera,  Digital Voice Recorder or games console accessories.

The device integrates support for a differential or single ended mic.  External  component  requirements  are  reduced  as  no separate microphone amplifiers are required.

FEATURES

•  Mono ADC:

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

• SNR 95dB, THD -85dB (‘A’-weighted @ 8 – 48ks/s)

• Multiple auxiliary analog inputs

•  Mic Preamps:

• Differential or single end Microphone Interface

-  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

• 5 band EQ

• Programmable High Pass Filter (wind noise reduction)

• Fully Programmable IIR Filter (notch filter)

• On-chip PLL

• Low power, low voltage

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

-  power consumption TBD all-on 48ks/s mode

• 4x4x0.9mm 24 pin QFN package

APPLICATIONS

• Digital Still Camera

• General Purpose low power audio ADC

• Games console accessories

• Voice recorders