Audio ADC with dual-supply and serial audio interface
The TLV320ADC3100IRGET is a 24-bit audio analog-to-digital converter from Texas Instruments, designed for capturing microphone or line-level signals in digital audio systems. It integrates a stereo input path (2 channels) with programmable gain and a digital microphone bias, making it a fit for portable audio recorders, voice-controlled devices, and IoT endpoints that need to digitize analog audio. The part supports sampling rates from 8 kHz to 96 kHz, covering voice-band (8-16 kHz) through high-quality music capture (48-96 kHz). The 24-bit resolution provides a theoretical dynamic range of about 144 dB, though the actual SNR is set by the analog front-end and supply noise.
Supply rails and digital interface
This split lets the analog section run from a clean 3.3 V rail while the digital core runs from a lower voltage, reducing power consumption. Control and data transfer use separate buses: I²C for register configuration (sample rate, gain, filter settings) and I²S for streaming the digitized audio data to a host processor or DSP. The I²S interface supports standard audio word lengths and formats.
The supply voltage range and temperature grade align with typical 3.3 V / 1.8 V logic systems in consumer and industrial audio products.
It is RoHS3 compliant (2011/65/EU + 2015/863), free of the six restricted substances plus four phthalates. The part is supplied in tape-and-reel or cut-tape options, suitable for both prototyping and volume assembly.