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page_id: curated-analog
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title: Analog Design
slug: curated-analog
route: /analog-design
section: reference
access: public
summary: Analog design entry point for wafer.space, with dated guidance and evidence.
status: published
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md_url: /analog-design.md
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tags: [wafer-space, knowledge-base, curated]
last_updated: 2026-08-19
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# Analog Design

This page is the entry point for analog design on wafer.space. It covers the analog flow and sends detailed I/O, verification, process-option, and packaging work to their owning pages.

## Current summary

The archive shows two useful starting points. The IEEE SSCS Chipathon 2025 repository contains GF180MCU analog designs and integration material. The wafer.space project template also contains a standalone analog pad-ring path. **Confirmed facts, dated 2025-08-21 and 2026-08-10.** ([archive message](/evidence/designing/analog#message-1408150314347139184); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1408150314347139184)) ([archive message](/evidence/designing/analog#message-1536307136286433330); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1536307136286433330))

For a quarter slot, the latest captured answer says that its 48 I/O pads may be changed to analog pads. **Confirmed guidance captured 2026-08-13.** This is signed-in search evidence; its canonical Discord URL was not captured. ([archive message](/evidence/live-delta/designing/analog#message-1537464422279282738))

Process options such as `gf180mcuD`, MIM-B, resistor choices, and native-Vt availability belong on [Process Options and Open Questions](/process-and-pdk/options-and-open-questions). Electrical pad behavior belongs on [Analog I/O and ESD](/analog-design/io-and-esd). Signoff and extraction details belong on [Analog Layout, Verification, and PEX](/analog-design/layout-verification-and-pex).

## Dated guidance

- **2025-10-09 — Open question.** Tim Edwards described the native-device layers, but said he had assumed commercial availability and had not used those devices in a design. Do not present native-Vt NMOS availability as settled. ([archive message](/evidence/i-information/questions/threads/are-native-vt-nmos-available#message-1425862668304253030); [Discord](https://discord.com/channels/1361349522684510449/1425483172166238410/1425862668304253030))
- **2026-08-13 — Decision boundary.** Leo Moser said manufacturing is flexible when the layout is DRC-clean. CoB use still requires the bond pads at the coordinates expected by the bonder and precheck. This is captured search evidence; its canonical Discord URL was not captured. ([archive message](/evidence/live-delta/designing/analog#message-1537441624102141982))

## Proposals and open work

- **Proposal, 2026-08-01.** Reusing an op-amp as a comparator began as a design question. It is not general wafer.space guidance. ([archive message](/evidence/designing/analog#message-1533185310131749044); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1533185310131749044))
- **Proposal, 2026-08-04.** A participant planned an all-analog hand-routed die. The later pad-ring answer gives a route, not fabricated proof for that design. ([archive message](/evidence/designing/analog#message-1534307980059869225); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1534307980059869225))

## Related pages

- [Analog I/O and ESD](/analog-design/io-and-esd)
- [Analog Layout, Verification, and PEX](/analog-design/layout-verification-and-pex)
- [Process and PDK](/process-and-pdk)
- [Packaging and Chip on Board](/packaging-and-cob)
- [Projects and Designs](/projects-and-designs)

## Sources

- `1408150314347139184` — 2025-08-21T18:06:37.108Z — Tim Edwards — [archive message](/evidence/designing/analog#message-1408150314347139184); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1408150314347139184) — Chipathon analog resource.
- `1425862668304253030` — 2025-10-09T15:09:11.371Z — Tim Edwards — [archive message](/evidence/i-information/questions/threads/are-native-vt-nmos-available#message-1425862668304253030); [Discord](https://discord.com/channels/1361349522684510449/1425483172166238410/1425862668304253030) — Native-device uncertainty.
- `1533185310131749044` — 2026-08-01T18:51:03.141Z — Tholin — [archive message](/evidence/designing/analog#message-1533185310131749044); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1533185310131749044) — Comparator proposal.
- `1534307980059869225` — 2026-08-04T21:12:08.510Z — Tholin — [archive message](/evidence/designing/analog#message-1534307980059869225); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1534307980059869225) — All-analog project plan.
- `1536307136286433330` — 2026-08-10T09:36:04.497Z — Leo Moser (mole99) — [archive message](/evidence/designing/analog#message-1536307136286433330); [Discord](https://discord.com/channels/1361349522684510449/1408135265427394661/1536307136286433330) — Standalone analog pad ring.
- `1537441624102141982` — 2026-08-13T12:44:07.470Z — Leo Moser (mole99) — [archive message](/evidence/live-delta/designing/analog#message-1537441624102141982) — DRC and CoB coordinate boundary; canonical Discord URL not captured.
- `1537464422279282738` — 2026-08-13T14:14:42.979Z — Leo Moser (mole99) — [archive message](/evidence/live-delta/designing/analog#message-1537464422279282738) — Quarter-slot analog-pad guidance; canonical Discord URL not captured.