The AD1839 is a high performance single-chip codec featuring three stereo DACs and one stereo ADC. Each DAC comprises a high performance digital interpolation filter, a multibit modulator featuring Analog Devices' patented technology, and a continuous-time voltage out analog section. Each DAC has independent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit - modulators and decimation filters. The AD1839 also contains an on-chip reference with a nominal value of 2.25 V.