WM8953

w WM8953 Low Power Stereo ADC with PLL and TDM Interface DESCRIPTION FEATURES 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 24bit 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. A low noise microphone bias with programmable current detect and short-circuit detect is provided. A flexible digital audio interface supports most commonly-used clocking schemes. The audio interface supports TDM and tristate outputs allow multiple devices to share the same interface. An integrated low power PLL provides support for most commonly-used audio sample rates. 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 The WM8953 is supplied in very small an...