Dialog Semiconductor completed its acquisition of Silego Technology on November 1, 2017. The deal brought Dialog Silego’s configurable mixed-signal IC technology, which Dialog said would broaden its products and customer reach in IoT, computing and automotive. Dialog later reported headline consideration of US$276 million on a cash- and debt-free basis, plus up to US$30.4 million in revenue-linked contingent consideration.
What Dialog acquired
Silego was a privately held company headquartered in Santa Clara, California. At the time of the completion announcement, Dialog described it as having approximately 235 employees worldwide and supplying configurable mixed-signal integrated circuits. Dialog’s 2019 annual report says the acquisition covered 100% of Silego’s voting equity interests.
Silego’s central technology was its configurable mixed-signal IC, or CMIC. Dialog’s 2017 annual report described CMICs as chips that let customers combine analog, logic and discrete component functions, then configure and prototype a custom design. The report said a prototype could be made “in hours.” These are Dialog’s descriptions of the technology and its potential benefits, not independently measured performance claims.
The annual report identifies GreenPAK as a trade name among the intangible assets acquired from Silego. That connects the GreenPAK name to the acquired capability, but does not establish which products, if any, are currently available or supported.
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Why Dialog said it wanted Silego
Dialog placed the acquisition within its strategic priority of extending its product portfolio and broadening and deepening its customer base. It said Silego’s technology complemented its mixed-signal offering and could strengthen its presence in IoT, computing and automotive.
Configurable chips offered a way to combine several circuit functions in one device, with potential flexibility for customers and possible reductions in board space, supply-chain complexity and time to market. Those advantages were part of Dialog’s stated rationale; the available disclosures do not quantify how much the acquisition delivered in savings, sales or market share.
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How to read the reported deal figures
The figures describe different parts or accounting stages of the transaction, rather than one interchangeable purchase-price number. Dialog’s 2019 annual report gives the headline consideration as US$276 million on a cash- and debt-free basis, subject to cash, debt and working-capital adjustments. It separately describes revenue-linked contingent consideration for Silego’s 2017 and 2018 revenue.
| Figure | What it represents |
|---|---|
| US$276 million | Headline consideration on a cash- and debt-free basis, subject to adjustments for cash, debt and working capital, as reported in Dialog’s 2019 annual report. |
| Up to US$30.4 million | Maximum contingent consideration tied to Silego’s revenue for 2017 and 2018, according to Dialog’s 2019 annual report. The first instalment was capped at US$10 million and the second at US$20.4 million. |
| US$290.508 million | Amount Dialog reported paid at completion, including an estimate for cash, debt and working capital. This is not the same basis as the US$276 million cash- and debt-free headline figure. |
| US$10 million and US$17.874 million | Amounts the 2019 annual report records as payable for the first contingent instalment and as the settlement for the second, respectively. They are reported outcomes of the contingent-payment provisions, not the maximum amounts. |
The annual report also records subsequent adjustments and other consideration. Completion cash, adjustments, deferred or contingent payments, escrow and acquisition-accounting fair values are distinct measures; adding or comparing them without their accounting basis can give a misleading picture of the deal’s headline price.
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What happened to Dialog after the acquisition
Renesas Electronics completed its acquisition of Dialog Semiconductor on August 31, 2021. Renesas said the combined portfolio would include Dialog’s configurable mixed-signal expertise. Dialog is therefore part of the subsequent Renesas ownership story, rather than an independent current acquirer.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the disclosures establish—and what they do not
The company disclosures establish the completion date, the acquired business and technology, Dialog’s stated strategic reasons, and the mechanics of the reported consideration. They do not establish an independently measured return on the acquisition, a Silego-specific market-size figure, quantified synergies or a resulting market-share gain. Dialog’s stated strategic aims should not be mistaken for measured post-deal outcomes.
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