Godfrey
Junior Member
![* *](https://designers-guide.org/forum/Templates/Forum/default/starblue.gif)
Offline
Posts: 16
|
It is common to star connect different circuit blocks to the power/ground in order to prevent noise transfer.
However, I have heard that it is actually better to strap analog supplies to digital supplies because the capacitance of the (digital) supply is much higher and this can actually reduce noise. This sounds wrong, but since the star connection is on the chip side of a bond wire, the vdd pin is not really the supply and the vss pin is not actually the ground.
Does anyone have a reference to the arguments AGAINST star connections?
|