SLAS666B January 2010 – October 2018 TLV320DAC3101
PRODUCTION DATA.
The stereo-audio DAC supports data rates from 8 kHz to 192 kHz. Each channel of the stereo audio-DAC consists of a signal-processing engine with fixed processing blocks, a digital interpolation filter, a multibit digital delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide enhanced performance at low sampling rates through increased oversampling and image filtering, thereby keeping quantization noise generated within the delta-sigma modulator and signal images strongly suppressed within the audio band to beyond 20 kHz. To handle multiple input rates and optimize power dissipation and performance, the device allows the system designer to program the oversampling rates over a wide range from 1 to 1024 by configuring page 0 / register 13 and page 0 / register 14. The system designer can choose higher oversampling ratios for lower input data rates and lower oversampling ratios for higher input data rates.
The DAC channel includes a built-in digital interpolation filter to generate oversampled data for the delta-sigma modulator. The interpolation filter can be chosen from three different types, depending on required frequency response, group delay, and sampling rate.
DAC power up is controlled by writing to page 0 / register 63, bit D7 for the left channel and bit D6 for the right channel. The left-channel DAC clipping flag is provided as a read-only bit on page 0 / register 39, bit D7. The right-channel DAC clipping flag is provided as a read-only bit on page 0 / register 39, bit D6.