What Does Cirrus Logic Make? The Audio Chips Inside Apple iPhones

Cirrus Logic designs the mixed-signal audio and power chips found in Apple iPhones, which makes Apple both its largest customer and its biggest concentration risk. Here is what Cirrus Logic makes and who manufactures it.

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Aug 9, 2026 · 2 min read

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Few public companies are as tied to a single customer as Cirrus Logic is to Apple. Roughly 91% of its net sales come from one company. In return, Cirrus Logic's audio and mixed-signal chips have shipped inside nearly every iPhone, iPad and Mac for years.

The short answer

Cirrus Logic's business is concentrated on both ends:

• Who buys it: Apple accounts for roughly 91% of Cirrus Logic's net sales, using its audio chips across the iPhone, iPad, and Mac lineup.
• Who fabricates the chips: TSMC is the primary foundry partner; GlobalFoundries is a second source with a supply agreement running through 2026.
• Why it matters: this is one of the tightest customer-supplier relationships in consumer electronics, and it runs in both directions.

The full interactive map is on Cirrus Logic's supply chain page.

A business built around one customer

Apple is most of Cirrus Logic's revenue. Cirrus Logic's audio and mixed-signal chips handle sound processing across Apple's device lineup, and that single relationship accounts for roughly 91% of net sales. For most companies that much dependence on one customer would be a serious risk. It has also made Cirrus Logic's sales steady: as long as Apple keeps shipping hundreds of millions of devices a year, Cirrus Logic's chips ship inside them.

Who makes Cirrus Logic's chips?

Cirrus Logic is fabless, meaning it designs chips without owning the factories that build them. TSMC is its primary foundry partner, manufacturing the mixed-signal wafers that become finished audio chips. GlobalFoundries is a second source, with a long-term wafer supply agreement running through calendar 2026. That deal includes new Apple-related process work at its fab in Malta, New York, which gives Cirrus Logic some production outside Taiwan.

See it for yourself

The full breakdown, with live tickers for both companies involved, is on Cirrus Logic's supply chain map.