The DAC714 is a complete, easy-to-use 16-bit digital toanalog converter featuring a voltage output with and aprecision reference together with a serial interface.The suggested timing as shown in the timing diagrams of theDAC714 data sheet makes the part difficult to use with anSPI interface. The part seems to need 16 clock cycles to loadthe serial shift register and an additional clock to update theDAC register. Also, to update the DAC register, A1 has to bepulled low for this clock cycle. This application note showsan easy way to use the DAC714 on a SPI interface withoutany glue logic.
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