Hi,
We use DAC7811 for sine wave signal generation at low frequency (about 2KHz). The DCA7811 is supplied with +3.3VDC power supply. The SPI bus is driven by an FPGA sending all approximated sine wave points with a CLK frequency of 10 MHz. When doing a power cut asynchronously from SPI frame sending, we want to be sure that this power cut is long enough to ensure a correct reset of DAC digital interface.
We have seen in datasheet there is a power on reset module but no information is given in this document about the minimum power cut duration for this module to operate correctly and how long we have to wait after power supply recovery before sending the first SPI frame.
Have you any recommandation for a minimum power cut duration (@+3.3V) ?
Many thanks for your help
Best regards
Sylvain BALSSA