Dual DAC Output - Block S


        This circuit is an another general purpose auxiliary output.  The MAX5722 is a Dual 12 bit Rail to Rail Voltage Output DAC controlled via a SPI serial interface.  The convenient thing about this DAC is that it does generate a ratio-matic output voltage.  Many DAC are current devices and require an external op-amp to convert the current into a voltage.  Of coarse the precision +5 volt reference is used.  The two outputs are directed the the rear DB-37 auxiliary jack on the rear frame.