SLASEG6B May 2018 – June 2020 TAS3251
Many systems use a low-noise regulator to provide 3.3 V to the DAC_AVDD and DAC_DVDD. The DAC_MUTE pin can take advantage of such a feature to measure the pre-regulated output (3.3 V) from the system power supply to mute the output before the PVDD power supply discharges. Figure 37 shows how to configure the system to use the DAC_MUTE pin. The DAC_MUTE pin can also be used in parallel with a GPIO pin from the system microcontroller, DSP or power supply.