AC108

The X-POWERS AC108 is a quad-channel Analog-to-Digital Converter (ADC) with I2S/TDM output, specifically engineered for high-definition voice capture and recognition in multi-microphone array platforms.

This highly integrated device boasts a dynamic range of 108 dB (A-weighted) at 0 dB boost gain and a THD+N of -90 dB. It features four programmable boost amplifiers with gain adjustable from 0dB to 45dB in 3dB steps. The AC108 supports a wide array of ADC sample rates, including 8kHz, 12kHz, 16kHz, 22.05kHz, 24kHz, 32kHz, 44.1kHz, 48kHz, and 96kHz.

Designed for flexibility, the AC108 includes four fully differential microphone inputs that can be configured as pseudo-differential or single-ended. It also provides four low-noise microphone bias outputs with programmable voltage from 1.5V to 4V. The device supports two I2S data outputs, configurable for I2S/PCM or TDM formats, enabling efficient data transfer for multi-channel audio capture.

Operating from a single 3.3V supply, the AC108 consumes less than 4mA per ADC channel, making it suitable for low-power applications. It features a TWI control interface supporting frequencies from 100 kHz up to 400 kHz. The AC108 is available in a compact 48-pin, 6x6 mm QFN package.