Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I always do a lookup table from this. Extracting most of the parameters I'm interested, gm, gds, gm/gds, gm/id, noise, flicker noise corner and index (interestingly it's not always 1), Cgs, Cgd, ft, mismatch, etc. I call them my rulers.
Hughes is right.
I got the same problem when I install ic5141 usr6 on rhel4. I copied the file from tools/dfII/sample/local/cdsinit.
When I overlap the old .cdsinit by the file Hughes told, the error is gone.
Thanks.
Khouly is right. There's some harmonics of spurs fall into the bad bands. This is very usual in RF chips but very hard to control.
I think you can do nothing about it now except re-design the chip under the condition that the spurs are considered tenderly.
As a filter together with the resistance on the differential lines.
In this way, 1pF capacitor equal to two 2pF capacitors put to each node respectively.
Not exactly. If you are sure the voltage between any two terminals of one transistor is lower than 1.8V, you can also use 1.8V transistor.
It's a little difficult to protect these 1.8V devices in 3.3V domain but some times the perforance increased by this deserve that.
Obviously you are a freshman. You can search a document "spectreRF.pdf" from the internet, or use "cdsdoc" command to get online helps.
If you use ocean scirpt to simulate, please refer to references of ocean and skill. The can all obtained from the internet or "cdsdoc" command.
The ocean...
iip3 and p1db
This is because each tone works as a blocker to each other. In fact, I always think the case 2 is a wronge way to test the 1dB CP, though it even occasionally shows up in literatures.
Stober
From China
Hi all. I'm an IC designer from Nanshan district, shenzhen. I found that there're many chinese or foreign friends here in shenzhen.
Now my interest is in analog or RF IC design as well as seeking any business chance in micro-electronics industries. Anyone of designer or founder in...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
