onsemi fixed $123 a share for Synaptics, then Google's chip widened what that price buys

onsemi▼−2.99% — onsemi, down 2.99 percent today, the Arizona power-chip maker, fixed the price of Synaptics▼−0.31% — Synaptics, down 0.31 percent today, the San Jose touch and edge-AI chipmaker, at $123 a share in cash on October 1↗ ¹. The deal is worth about $5.7 billion ¹. Thirteen days later, at Google Research's annual event, Synaptics chief executive Rahul Patel previewed a chip that price never had to include: an Astra microcontroller built around Google's▼−2.89% — Google, down 2.89 percent today Coral M2 neural engine, launching October 20, which he said will find its way into Google devices ².

A fixed cash price freezes the seller's side of the bargain and hands the buyer everything that happens after signing. onsemi paid for the October 1 Synaptics; it will own the October 20 one, and every one after.

Working silicon at under six milliwatts, launching October 20

The chip pairs Google's Coral neural processing unit with Synaptics' Torq engine and Arm▼−7.10% — Arm, down 7.10 percent today CPUs, running voice, vision, motion and context sensing at once, at an average draw Google puts under six milliwatts ². Synaptics and Google Research also spent 18 months on an open-source compiler built on MLIR, short for Multi-Level Intermediate Representation, freeing developers from the single-vendor toolchains usual in microcontrollers ².

Developers have had the pairing in hand since March, when Synaptics shipped a limited-edition Coral development board preloaded with Google's compact Gemma 3 language model↗ ³. The next Coral design, M3, runs that model natively, is already complete, and has no ship date; Patel named no Google device ².

No Google product yet, but Core IoT revenue is guided up 40%

Everything demonstrated so far is silicon and development boards; whether Google ships products with the chip inside is the step that has not happened yet. Sales are moving anyway: Synaptics expects its Core Internet of Things revenue to grow more than 40% this fiscal year on edge-AI design wins ⁴.

The one number that would test the price is still secret

At $123, onsemi is paying roughly 4.7 times Synaptics' forward revenue ⁵. What that price had to beat is unknown: the September bid, from a rival now confirmed as Cirrus Logic▼−0.72% — Cirrus Logic, down 0.72 percent today, the audio-chip supplier for Apple's▲+0.16% — Apple, up 0.16 percent today iPhone, was judged superior by Synaptics' board, and its number appears in no filing ⁵. The merger proxy, due within ten days of the amended agreement, had not appeared as of October 13 ⁵.

If that bidder's diligence had already found the Google work, the price was full and there is no free option. If it had not, the roadmap shown on October 14 landed on top of a fixed price at no extra cost to the buyer.

The option and the loan both land on onsemi's holders

Synaptics' shareholders keep a $123 cash floor; the roadmap they sold with it now belongs to the buyer. onsemi's shareholders inherit the upside, the wait to a mid-2027 close ¹, and the debt of a cash deal: a $2.45 billion secured term loan from Morgan Stanley▼−0.77% — Morgan Stanley, down 0.77 percent today, committed financing that funds at closing ⁵.

A stretched balance sheet meets a falling chip market

The balance sheet was already stretching before any of that arrives: onsemi's total debt jumped to $4.48 billion in the June quarter↗, with the deal loan still to come ⁶. Next comes the third-quarter report on November 2 ⁷, delivered into a falling market: the iShares Semiconductor ETF has closed lower nine sessions in a row↗ ⁸.

On the record we have, onsemi's holders bought a lengthening roadmap at a fixed price and financed it with committed debt. The one document that could prove the price was already full, the proxy carrying the September bid, is late. Until it lands, the option on Google's roadmap is theirs.