Audio 16 b, 20 b, 24 b, 32 b 768k I2C, I2S, TDM 20-WQFN (3x3)
The TAA3020IRTER is a high-performance 2-channel audio analog-to-digital converter (ADC) from Texas Instruments, designed for professional and embedded audio applications. It supports up to two analog microphone/line inputs or four digital PDM microphone channels with simultaneous sampling. The device delivers excellent audio quality with a 104 dB dynamic range, supports sample rates up to 768 kHz, and integrates advanced audio processing features such as programmable gain, digital filters, automatic gain control (AGC), voice activity detection (VAD), and an integrated PLL. It communicates through an I²C control interface and supports I²S, TDM, and Left-Justified (LJ) digital audio formats, making it ideal for smart speakers, conferencing systems, IP cameras, and other high-performance audio acquisition systems.
Key Features
High-performance 2-channel audio ADC
Supports 2 analog microphone/line inputs or 4 digital PDM microphone inputs
104 dB dynamic range (DR) and –95 dB THD+N
Sampling rates from 8 kHz to 768 kHz
Programmable microphone gain from 0 dB to 42 dB
Digital volume control from –100 dB to +27 dB
Integrated programmable HPF, biquad filters, and low-latency filter modes
Built-in Automatic Gain Control (AGC) and Voice Activity Detection (VAD)
Integrated audio PLL and programmable microphone bias supply
Supports I²S, TDM, and Left-Justified (LJ) audio interfaces
Configurable for 1.8 V or 3.3 V supply operation
Available in a compact 20-pin WQFN (RTE) package
Operating temperature range: –40°C to +105°C