PCM5120-Q1 2-Channel Burr-Brown™ Audio ADC Texas Instruments PCM5120-Q1 2-Channel Burr-Brown™ Audio ADC supplies simultaneous sampling of up to two analog or four digital channels for the pulse density modulation (PDM) microphone input. The PCM5120-Q1 provides line and microphone inputs and permits single-ended and differential input configurations. The device integrates programmable channel gain, digital volume control, a programmable microphone bias voltage, a phase-locked loop (PLL), a programmable high-pass filter (HPF), biquad filters, and low-latency filter modes. It allows for sample rates up to 768kHz. The ACD furnishes time-division multiplexing (TDM), I2S, or left-justified (LJ) audio formats and can be controlled with the I2C interface.