Live delta: 🕰️-analog

15 Discord messages from live-delta/📐 - Designing/🕰️-analog.md.

This group comes from a signed-in Discord search capture. These records were not present in the public monthly JSON exports at the time this archive was built.

Parent/category shown by Discord search: 📐 - Designing

Messages: 15

message-1537433705654784032

2026-08-13T12:12:39.565Z — Dharanidhar

Message ID: 1537433705654784032
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T12:12:39.565Z
Search group: 🕰️-analog, 📐 - Designing

Content

Hey guys, an analog computing enthusiast here.
I just wanted to  clarify on the pins that are available in the GFMCU180 run - its says only 2 analog pins but a majority are "bidirectional"  - can we use these as well for routing analog signals ?
I see some LibreLane pads

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message-1537441062920912946

2026-08-13T12:41:53.674Z — Leo Moser (mole99)

Message ID: 1537441062920912946
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T12:41:53.674Z
Search group: 🕰️-analog, 📐 - Designing

Content

Hey guys, an analog computing enthusiast here.  I just wanted to  clarify on the pins that are available in the GFMCU180 run - its says only 2 analog pins but a majority are "bidirectional"  - can we use these as well for routing analog signals ?  I see some LibreLane pads

Reply/reference text

@Dharanidhar
Hey guys, an analog computing enthusiast here.  I just wanted to  clarify on the pins that are available in the GFMCU180 run - its says only 2 analog pins but a majority are "bidirectional"  - can we use these as well for routing analog signals ?  I see some LibreLane pads

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message-1537441624102141982

2026-08-13T12:44:07.470Z — Leo Moser (mole99)

Message ID: 1537441624102141982
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T12:44:07.470Z
Search group: 🕰️-analog, 📐 - Designing

Content

Essentially, we do not care about what is manufactured, as long as it's DRC clean. And if you want to use the CoB packaging option, the bonder expects the pads to be positioned at the same coordinates. This is checked as part of the precheck.

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message-1537462045128007680

2026-08-13T14:05:16.222Z — Dharanidhar

Message ID: 1537462045128007680
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T14:05:16.222Z
Edited/time observed: 2026-08-13T14:06:17.181Z
Search group: 🕰️-analog, 📐 - Designing

Content

Thanks for the prompt reply ! Just had a few follow up questions

What is this pin overhead ? Can we use all the 48 pins in quarter slot ?
say the quarter slot says - it says 60% overhead ? (edited)
Thursday, August 13, 2026 at 11:06 PM

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message-1537464422279282738

2026-08-13T14:14:42.979Z — Leo Moser (mole99)

Message ID: 1537464422279282738
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T14:14:42.979Z
Search group: 🕰️-analog, 📐 - Designing

Content

I'm not sure what you're referring to with pin overhead. Yes, as the website says, you have 48 I/O pads that you could change to analog pads: https://wafer.space/#slot-0p5x0p5
Here's an example configuration for the quarter slot: https://github.com/wafer-space/gf180mcu-project-template/blob/main/librelane/slots/slot_0p5x0p5.yaml

Links

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    "url": "https://github.com/wafer-space/gf180mcu-project-template/blob/main/librelane/slots/slot_0p5x0p5.yaml"
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message-1537475181776216104

2026-08-13T14:57:28.243Z — namibj

Message ID: 1537475181776216104
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-13T14:57:28.243Z
Edited/time observed: 2026-08-13T14:06:17.181Z
Search group: 🕰️-analog, 📐 - Designing

Content

Thanks for the prompt reply ! Just had a few follow up questions   What is this pin overhead ? Can we use all the 48 pins in quarter slot ?  say the quarter slot says - it says 60% overhead ? (edited)
Thursday, August 13, 2026 at 11:06 PM

Reply/reference text

@Dharanidhar
Thanks for the prompt reply ! Just had a few follow up questions   What is this pin overhead ? Can we use all the 48 pins in quarter slot ?  say the quarter slot says - it says 60% overhead ? (edited)
Thursday, August 13, 2026 at 11:06 PM

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message-1538054601335644240

2026-08-15T05:19:52.631Z — Dharanidhar

Message ID: 1538054601335644240
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-15T05:19:52.631Z
Search group: 🕰️-analog, 📐 - Designing

Content

Ah nice - so I can actually get more area if I dont use the custom pad ring ?

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message-1538124852429328464

2026-08-15T09:59:01.797Z — Leo Moser (mole99)

Message ID: 1538124852429328464
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-15T09:59:01.797Z
Search group: 🕰️-analog, 📐 - Designing

Content

Yes, that's right.

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message-1539274625735856238

2026-08-18T14:07:49.115Z — namibj

Message ID: 1539274625735856238
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-18T14:07:49.115Z
Search group: 🕰️-analog, 📐 - Designing

Content

Errrr, it's the foundry padring that takes up a lot of area. Especially once you include the power ring it comes with.

Reply/reference text

Message could not be loaded

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message-1539457425831108700

2026-08-19T02:14:12.054Z — Fred Kerr

Message ID: 1539457425831108700
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:14:12.054Z
Search group: 🕰️-analog, 📐 - Designing

Content

Is it ok if I ask something completely random here? Is this process only CMOS or can it do NPN/PNP?

SN76477, LM3900 clones?

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message-1539461845327282287

2026-08-19T02:31:45.744Z — namibj

Message ID: 1539461845327282287
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:31:45.744Z
Search group: 🕰️-analog, 📐 - Designing

Content

Is it ok if I ask something completely random here? Is this process only CMOS or can it do NPN/PNP?  SN76477, LM3900 clones?

Reply/reference text

@Fred Kerr
 [GMNI], 
Server Tag: GMNI
GMNI
Is it ok if I ask something completely random here? Is this process only CMOS or can it do NPN/PNP?  SN76477, LM3900 clones?

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message-1539462353475862548

2026-08-19T02:33:46.896Z — Fred Kerr

Message ID: 1539462353475862548
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:33:46.896Z
Search group: 🕰️-analog, 📐 - Designing

Content

there are bipolar junction transistors available; you probably do not want to use them for circuits that with just minor changes can be done using (unipolar) MOSFETs though.  AFAIK they are usually only deployed for band gap references and maybe some kinds of low-noise/RF things, but I can't recommend them for purposes that are substantially different from "bandgap reference".

Reply/reference text

@namibj
there are bipolar junction transistors available; you probably do not want to use them for circuits that with just minor changes can be done using (unipolar) MOSFETs though.  AFAIK they are usually only deployed for band gap references and maybe some kinds of low-noise/RF things, but I can't recommend them for purposes that are substantially different from "bandgap reference".

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message-1539463674886881290

2026-08-19T02:39:01.945Z — namibj

Message ID: 1539463674886881290
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:39:01.945Z
Search group: 🕰️-analog, 📐 - Designing

Content

I'm just brainstorming retro circuits and I'm not serious, sorry.  I still have 3 sn76477 from a science project I never finished. Now I'm really afraid of letting out the magic smoke.  If I were serious, I'd think about asynchronous adiabatic logic.

Reply/reference text

@Fred Kerr
 [GMNI], 
Server Tag: GMNI
GMNI
I'm just brainstorming retro circuits and I'm not serious, sorry.  I still have 3 sn76477 from a science project I never finished. Now I'm really afraid of letting out the magic smoke.  If I were serious, I'd think about asynchronous adiabatic logic.

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message-1539464284252409918

2026-08-19T02:41:27.229Z — namibj

Message ID: 1539464284252409918
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:41:27.229Z
Search group: 🕰️-analog, 📐 - Designing

Content

Live to a large extend inside dnwell and do rely on the ldmos structures.
You'll need to do some replacement opamp-like things to make up for bipolar junction transistor vs. unipolar MOSFET differences, but it's not like there's any difficulty matching the specs of such an old bipolar opamp with a gf180mcuD-class CMOS process.... thus, should b e fine.

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message-1539465470258843718

2026-08-19T02:46:09.995Z — Fred Kerr

Message ID: 1539465470258843718
Guild ID: 1361349522684510449
Source: signed-in Discord server search DOM capture
Timestamp: 2026-08-19T02:46:09.995Z
Search group: 🕰️-analog, 📐 - Designing

Content

I want to play with asynchronous logic, and separately and together, adiabatic, but it's about 5 years in the future.

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