A digital isolator is used to get a digital signal across a galvanic isolation boundary. They serve a similar purpose to optocouplers, except optocouplers are far too slow and error prone for high speed (1MHz+) digital signals. They also use a different coupling technology, usually transformer or RF link as opposed to an optical link. While digital isolators only work with digital signals, they are frequently used to transfer digitised versions of analogue signals. The resulting signal chain will have better bandwidth, accuracy and linearity in comparison to an optocoupler based system. Optocouplers have inherent non-linearity and high unit to unit variations (+- 50% of your signal), so the circuit will need to immune to these variations or each unit individually calibrated. Multiplexing digital channels across a single digital isolator path can be achieved very easily, which in turn simplifies the circuit and results in a net cost saving in-spite of using a more expensive isolation technology. In short, digital isolators are a superior to optocouplers in almost every regard
According to the new market research report “Digital Isolators - Global Market Share and Ranking, Overall Sales and Demand Forecast 2024-2030”, published by QYResearch, the global Digital Isolators market size is projected to reach USD 0.82 billion by 2029, at a CAGR of 9.6% during the forecast period.
- Global Digital Isolators MarketSize(US$ Million), 2018-2029
Source: QYResearch, "Digital Isolators - Global Market Share and Ranking, Overall Sales and Demand Forecast 2024-2030”
- Global Digital Isolators Top11Players Ranking and Market Share (Ranking is based on the revenue of 2022, continually updated)
Source: QYResearch, "Digital Isolators - Global Market Share and Ranking, Overall Sales and Demand Forecast 2024-2030”
The global key manufacturers of Digital Isolators include ADI, Silicon Labs (Skyworks), TI, Broadcom Corporation, Infineon, Vicor, NVE, ROHM, Shanghai Chipanalog Microelectronics, Beijing Zhongke Gree Micro, etc.
In 2022, the global top five players had a share approximately 63.0% in terms of revenue.
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