Can anyone give me some pointers on what I would need to do to get a TLV5618 12bit serial DAC running with an Arduino?
I want to be able to output 0-5v under program control.
Particularly how I connect CS, SCLK, and REF to get the chip working.
Thanks,
Steve
Looks like you access it as a SPI device, you might want to take a look here:
http://code.rancidbacon.com/LearningAboutArduinoMCP23S08
The above link has my notes on connecting to a SPI device.
DI would map to MOSI in the Arduino connectors I would assume.
From looking at the datasheet seems like REF is some voltage less than the supply voltage--but that's reaching the edge of my knowledge of such things.
After you get the hardware wired up it's a matter of sending the correct bytes over SPI.
--Phil.
REF is the DAC's analog reference voltage. The output of the DAC is proportional to REF. You can actually use this DAC as a programmable amplifier for applications like sound synthesis (one of my interests). If you are going to use the DAC in a more conventional way just give it a DC voltage--the output of a precision voltage regulator would be best. REF cannot exceed the part's supply voltage.
--Mark