TLV320ADCx140 Audio Analog-to-Digital Converter Texas Instruments TLV320ADCx140 4-ch, 768kHz Audio Analog-to-Digital Converter (ADC) supports simultaneous sampling of up to four analog or eight digital channels for the pulse density modulation (PDM) microphone input. The TLV320ADCx140 supports line and microphone inputs, allowing for single-ended and differential input configurations.