[SI-LIST] Re: Analog/Digital Gnd
- From: "San Miguel, Shane" <shane.san.miguel@xxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 11 Mar 2003 13:30:38 -0800
I am for sure not the expert on this but in my experience, you want =
analog isolated to take advantage of extra filtering. Usually I run =
into a seperate analog gnd when there is a PLL involved. You have to =
keep the digital supplies away from this so there is nothing to confuse =
the PLL.=20
Shane San Miguel=20
-----Original Message-----
From: Parthasarathy Sampath [mailto:parthsv@xxxxxxxxx]
Sent: Tuesday, March 11, 2003 12:44 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Analog/Digital Gnd
Hi All,
Why is that Analog ground and Digital ground are
kept seperate during Layout? I have even noticed in
some cases, seperate power rails are provided for
analog and digital block even though they require same
VDD.
Thanks in Advance,
Partha!
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