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In this post, I test the slew rate of the DAC8775, the subject of the Quad-Channel, Analog Output Module RoadTest. The edge of the DAC generated signal is programmable. Let's look at how to control it.     Configurable Slew Rate  One of the options you can set on the DAC is the speed at which the signal changes. Depending on your application this can be useful. By default this control is switched off and the DAC tries to reach the desired level as fast as it can. The image b ...
In this post, I document the firmware I use to test the DAC8775, the subject of the Quad-Channel, Analog Output Module RoadTest. I'm using a Hercules automotive microcontroller to talk to the DAC. I'll cover the peripheral configuration and the test code. Even if you're using a different controller, the sequence of events may help you to write your own code for this DAC.   Connections  The Hercules is one of the smallest of the family, a TMS570LS04. I use this because it has all ...