Hi,
How did you find this? Where should I look for this information in the data sheet?
It seems you are not that experienced in reading datasheets, thus I tell how I do it:
There are some important basic informations. Usually on the first page:
* the headline (gives basic, but still important informations about the device)
* the feature list (just shows some key specifications. Often shows where "this" device has improvements against competitor devices)
Then there are two chapers of technical specifications. (important)
*
typical / recommended operation specifications (typically as table. Usually more at the end of the datasheet).
It gives all necessary informations you need to operate the device. There are sections for: Inputs, Outputs, Supply and other external / internal things. If you go beyond the given limits: in best case the device operates normally but with increased errors. But it also may fail to operate completely.
*
Absolute maximum ratings. Don´t normally operate your device at these limits. Going beyond these limits you may immediately kill your device. Or it may harm your device and cause long term failure.
Example: You desing a circuit used in a car.
The "nominal car voltage" is 12V. But this value is almost useless information. What you need to know:
The nominal voltage range if a car is 10.5V(cold, weak battery) to 14.4V (fully charged). And you need to know that there may be spikes/transients maybe up to 30V (depends on situation, maybe even higher)
So you need to look for a device with normal operation range of "10.5 .. 14.4V plus some headroom, but it needs to withstand voltages up to 30V. If your devie can´t stand these 30V you need to install additional protection circuitry that limits the voltage to a lower value, matching your device specifications. (But indeed designing electronics for cars can fill a whole book...)
I can only recommend to use the search function of your PDF reader:
So if you are concerned about "noise", then do a search about "noise". Start your search at the beginning of the section you expect the information. The technical limits are shown in the specifications table, but also important information is given in the textual description section.
Example: "How do I find this":
* go to the section of "recommended operation specifications" (beginning of table)
* do a search for "supply"
* step through the results until the table entry headline "POWER SUPPLY" (or similar)
--> there you are.
Additionally I recommend to use the keyword "supply" and do (fast) search through the textual descriptions.
focus on chapter headlines containing "supply", but also do a quick check on every hit if there is important informations. Often you find recommendations about proper decoupling of the supplies and maybe even example schematics and/or PCB layout recommendations.
--> I use the PDF search very often.
Example: You look for "supply" then you get hits for "POWER supply". You may do a new search for "POWER".
In the above datasheet you get a hit at fig.1 where it shows that (for the given schematic) the star point for GND should be at pin 12 of AD565. Maybe important for your application, maybe not.
But at least a reminder: Should I also care about the star point in my application, too?
Klaus