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