ZHCSGM5A August 2017 – November 2017 TLV320AIC3109-Q1
PRODUCTION DATA.
The TLV320AIC3109-Q1 includes a mono audio DAC supporting sampling rates from 8 kHz to 96 kHz. The DAC consists of a digital audio processing block, a digital interpolation filter, a multi-bit 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. This is realized by keeping the upsampled rate constant at 128 fS(ref) and changing the oversampling ratio when the input sample rate changes. For an fS(ref) of 48 kHz, the digital delta-sigma modulator always operates at a rate of 6.144 MHz, which ensures that quantization noise generated within the delta-sigma modulator stays low within the frequency band below 20 kHz at all sample rates. Similarly, for an fS(ref) rate of 44.1 kHz, the digital delta-sigma modulator always operates at a rate of 5.6448 MHz.
The following restrictions apply in the case when the PLL is powered down and double-rate audio mode is enabled in the DAC.