The XE3005 is an ultra low-power CODEC (Analog to Digital and Digital to Analog Converter) for voice and audio applications. It includes microphone supply, preamplifier, 16-bit ADC, 16-bit DAC, serial audio interface, power management and clock management for the ADC and the DAC. The sampling frequency of the ADC and of the DAC can be adjusted from 4 kHz to 48 kHz.