ADC and DAC in an audio codec can operate simultaneously at different frequencies. Free Technical Library News

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ADC and DAC in an audio codec can operate simultaneously at different frequencies

21.08.2005

Wolfson Microelectronics offers an audio codec in which ADC and DAC can operate simultaneously at different sample rates.

Such codecs can be used in devices that require separate independent ADC and DAC in the audio signal transmission path, for example, in TV and video systems with simultaneous recording and playback. The WM8591 codec has an analog programmable amplifier to adjust the sensitivity of the analog inputs to ensure a constant (stable) recording level and to prevent overload.

The signal-to-noise ratio of the codec is 110 dB for DAC and 102 dB for 24-bit sigma-delta ADC. Analog gain control is carried out in the range from +24 to -21 dB in 0,5 dB steps, digital gain control from -24,5 to -103 dB is also in 0,5 dB steps. The output word length is from 16 to 32 bits, the sampling rate is from 32 to 96 kHz.

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