We don’t need Openlane and Caravel. If you can jus...
# analog-design
We don’t need Openlane and Caravel. If you can just provide us with a GDS with sealring and a couple pads if possible??
We are stuck with PNR with pads here https://github.com/rsnkhatri3/vsdPLLSoC
I prefer to have full control over the chip.
If you ate trying to target High frequency design no way OpenLane could help
100MHz max? Is this high? For 130nm, I suppose it should be around 130-140MHz
@Kunal I've done 4GHz VCOs on 0.35um CMOS (with divider in bipolar transistors) and 4GHz VCOs and counters / dividers on 0.18um pure CMOS.
I was going to say that it's possible to get something in that range.
@Chris Jones
Are you taping out something in that range?
If yes, let's connect privately, I have built an Inductor library at my end.
One question @Chris Jones I was hoping to tapeout something that work in the ISM band 2.4GHz range. I think this might not work given the Openlane requirement.
What do you think?
No, I have given up on this tapeout, because I assume that I have missed the deadline, and family / work commitments mean that I am unlikely to finish anything before it really does go to fab. Also I find the learning curve of magic very steep so that my progress was very slow, so might wait for more support for this process in KLayout etc.
My team is working actively on creating device generators for Klayout
We have both NFET , PFET and Inductors so far.
only 1.8V
No RF for now.
If I have known about this tapeout a couple of month back we would have made a difference.
The problem with inductors is that this process is AL
and I think they would be too lossy.
For any real applications.
A lot of cellphone chips were made with Al inductors. The ones I did were 3um aluminium. It is not at all useless. Sure RDL would probably be better but that has other issues.
yeah, but losses are really high.
You have to make sure the LNA is doing a great job and on both SNR and gain.
It depends on your application. For example, this process would be good enough to make a cellphone transceiver for 3G, including the LNAs. Sure there are things that it could not do, maybe the trick is to identify applicaitons that can be done in this process - there are plenty.
K is really high for the layers dielectric layers
at the top layer
I agree with you.