Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
one thing I notice is that you are adding up the typical current consumption numbers for the three devices you wish to power but are only choosing an LDO that has a *max* current output rating that is just barely larger than your *typical* current consumption. You have 500mA max capability for a load of 490mA typical. You will need more margin than that on the current source capability, enough margin to cover what the *max* current consumption could be for each of your loads, plus the possibility of any extra transient current that might be required during startup conditions. Since the devices are all from different product groups ( the ADC is from the High Speed Data Converter group where you are posting, but the DAC is from our Precision group and the clock chip is from our Clocking group, and the power supplies are yet a different group) I can only say that the 'Filter' that you show to isolate the three loads should be sufficient to keep one of the loads from possibly coupling noise into one of the other loads. I would suspect the clocking device might be a more critical device for keeping the supply clean and low noise, but that would be discussed in the clocking forum I believe.
