IDAC Switching in PSoC 3/5 | Cypress

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IDAC Switching in PSoC 3/5

Last Updated: March 14, 2011
Question: 

What is the best way to switch on and off the IDAC to avoid voltage/current spikes on the output in PSoC 3/5?

Answer: 

The best way to avoid current or voltage spikes while turning off a DAC is to use the DAC bus, and through hardware write a 0 to the DAC to turn it off, and a non-zero value to turn it on.  Alternately, the DAC may be turned off by writing a 0 to the DAC register in firmware.

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