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Title
t

Tim 'mithro' Ansell

03/09/2023, 5:49 PM
First open source PDK where Google wasn't involved! https://github.com/IHP-GmbH/IHP-Open-PDK
๐ŸŒ 4
๐ŸŽ‰ 2
a

Amro Tork

03/09/2023, 5:54 PM
That's a really great milestone.
k

Keno Fischer

03/09/2023, 6:00 PM
Neat, looks like they're even planning a free MPW program
p

proppy

03/09/2023, 6:12 PM
t

Tim Edwards

03/09/2023, 7:43 PM
They've got inductors!
๐ŸŒ 2
๐Ÿ‘ 1
"the open source PDK is not intended to be used for production at this moment."---That's a downer. What, exactly, is meant by "at this moment"?
๐Ÿ˜ฎ 1
a

Amro Tork

03/09/2023, 7:47 PM
@Tim Edwards This is an advanced RF process. I know multiple people who used the closed source version of it. I donโ€™t the PDK is ready for work
๐ŸŒ 1
Itโ€™s just the start
p

proppy

03/09/2023, 11:12 PM
They have a timeline hidden in their repo too
open_PDK_gantt.png
๐Ÿ™Œ 3
m

Michael Strothjohann

03/13/2023, 12:41 AM
Designs with IHP sg13s SiGe HBT BiCMOS : https://slideplayer.com/slide/11288985/
๐ŸŒ 1
t

Tim Edwards

03/13/2023, 1:19 PM
The big question here is what the price of a shuttle run is going to be. This process has a lot of masks and a lot of processing steps. SiGe is not known for being cheap.
t

Tim Edwards

03/13/2023, 1:52 PM
Ouch. The Caravel chip is 18.6mm^2, which comes to $145,000 (US).
k

Keno Fischer

03/13/2023, 2:30 PM
Good value on the free shuttle then ๐Ÿ˜‰
m

Michael Strothjohann

03/15/2023, 7:09 PM
@Keno Fischer currently 6.2k EUR/mm^2 - respectively 5.1k EUR/mm^2 for educational Institutions - according to https://europractice-ic.com/schedules-prices-2023/ (option MINI SIC). Please take into account: Ft/Fmax=300/500GHz. (BTW: GF charges comparable MPW prices for their 130nm SiGe BiCMOS technology)
@Tim Edwards I don't expect RiscV microcontroller cores in this technology, but smaller, predominantly analogue RF designs - typically under 3mm^2, perhaps with small state machines for control. (i.e. a ring-oscillator with few hundred GHz, HF-Filters, โ€ฆ)
A little more background knowledge about IHP's SiGe technology: Free download (approx. 110 MB) : https://www.riverpublishers.com/research_article_details.php?book_id=482
๐Ÿ‘ 1
t

Tim Edwards

03/15/2023, 7:50 PM
@Michael Strothjohann: I only meant to be using the Caravel chip size as a reference for cost, since I have a handle on what that much area is costing us for Sky130 and GF180MCU.
๐ŸŒ 1