DESCRIPTION

The WM8953 is a low power high performance stereo ADC designed for mobile handsets and other portable devices.

Four single-ended or differential input connections are provided, with up to 60dB of analogue gain in each input path. Stereo 24- bit sigma-delta ADCs provide hi-fi quality audio recording of microphones or line input. A programmable high pass filter is available in the ADC path for removing DC offsets and suppressing wind and other low frequency noise.

FEATURES

• SNR 94dB (‘A’ weighted)

• THD -82dB at 48kHz, 3.3V

• Full stereo microphone / line input interface

• Low noise MICBIAS

• Low power consumption

• Full analogue and digital volume control

• PLL provides flexible clocking scheme

• 2-wire, 3-wire or 4-wire control

• Sample rates: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48kHz

• GPIO functions available

• Digital supply: 1.71V – 3.6V

• Analogue supply: 2.7V – 3.6V

• W-CSP package (3.226 x 3.44 x 0.7mm, 0.5mm pitch)

APPLICATIONS

• Multimedia phones

• General purpose low power audio ADC