is a low-power stereo ADC
designed for portable digital Audio
applications, with line-input amplifier, boost amplifier, microphone bias, programmable gain control, sound effects, and auto level control (ALC). It is available in 24-QFN (4-mm ? 5-mm) and 24-DSBGA (2.49-mm ? 3.49-mm) packages to save footprint. The PCM1870
accepts right-justified, left-justified, I2S, and DSP
formats, providing easy interfacing to Audio DSP
and encoder chips. Sampling rates up to 50 kHz are supported. The user-programmable functions are accessible through a 2- or 3-WIRE
serial control port.