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Linear Technology acquired all outstanding stock of Dust Networks on December 20, 2011. The deal paired Dust’s low-power wireless sensor-network technology with Linear’s industrial instrumentation, power-management and energy-harvesting products, giving Linear a broader offering for monitoring industrial sites without wired sensor connections.
When did Linear Technology acquire Dust Networks?
The acquisition closed on December 20, 2011. Linear’s fiscal 2012 Form 10-K says it bought all outstanding stock of privately held Dust Networks, then based in Hayward, California. The filing reported approximately $25.2 million in consideration, including $1.7 million of acquisition expenses that Linear expensed immediately. It also described up to $2.8 million in additional cash over two years, tied to service by certain acquired key employees. These are transaction figures reported in Linear’s 2012 filing, not a current valuation of the technology.
Linear allocated the purchase price to intellectual property ($13.1 million), customer relationships ($4.0 million), goodwill ($2.2 million) and net tangible assets ($3.6 million). Linear Technology FY2012 Form 10-K
Why did Linear buy Dust Networks?
Linear said the acquisition would let it offer a complete, high-performance wireless sensor-network solution. Dust contributed low-power radio technology and networking software; Linear brought industrial instrumentation, power management and energy harvesting. Together, those capabilities could support remote monitoring in places where running sensor wires was difficult or costly. Linear’s acquisition announcement
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The strategic fit was industrial rather than consumer-focused. The companies pointed to process control, data acquisition, building automation, data-center energy management, renewable-energy monitoring, remote monitoring and transportation management as potential applications. The announcement named GE, Emerson, Vigilent and Streetline Networks among Dust’s customers.
What was SmartMesh?
SmartMesh was Dust Networks’ wireless sensor-network technology. Its network used small sensor nodes, called motes, that could collect and relay data through a self-forming mesh. A network manager coordinated and monitored network performance and passed data to a host application. Because routing motes were designed to operate on batteries for years, the approach could place sensors in locations where power and wiring were limited.
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How the mesh aimed to improve reliability
Linear’s technical material describes a design that used time, frequency and physical diversity. SmartMesh’s time-synchronized, channel-hopping approach was associated with industrial standards and approaches including IEEE 802.15.4e and WirelessHART. The practical goal was robust communication in industrial environments, with network formation and management handled by the system rather than requiring each sensor to have a direct wired connection. Linear’s SmartMesh technical journal article
These design goals do not establish that every deployment would achieve the same reliability, scale or battery life. Performance depends on the application and operating conditions, and the cited product announcements do not provide a universal comparison against other industrial wireless systems.
Which SmartMesh products followed the acquisition?
In 2012, Linear announced two named SmartMesh products: the LTC5800 system-on-chip and the LTP5900 module. The announcement described them as compliant with IEEE 802.15.4E and intended for robust, secure wireless sensor networks alongside network managers. Linear said mote designs using the technology could achieve battery life exceeding 10 years; that was a design capability claim, dependent on deployment and operating conditions, not a guarantee for every installation. Linear’s 2012 SmartMesh product announcement
Linear’s technical journal identified SmartMesh IP and SmartMesh WirelessHART as the main product directions following the acquisition. Those names describe industrial networking offerings, not a general-purpose home wireless mesh product.
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How did the technology reach cloud applications?
In 2013, Linear and LogMeIn’s Xively announced a partnership connecting developer projects built with the SmartMesh IP Starter Kit to Xively’s cloud platform. The companies cited possible applications such as smart parking, commercial-building energy management, utility-scale solar plants, and structural monitoring of bridges, tunnels and mines. The announcement documents an integration path at that time; it does not establish that the service or the same integration remains available today. Linear and Xively partnership announcement
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What happened to Dust Networks after the acquisition?
Dust Networks became part of Linear Technology’s portfolio. In 2017, Analog Devices acquired Linear Technology, so the Dust-derived technology portfolio subsequently became part of Analog Devices. IEEE Technology Navigator describes the lineage and connects SmartMesh’s time-synchronized channel-hopping approach with WirelessHART and IEEE 802.15.4e industrial standards. IEEE Technology Navigator: Dust Networks
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The historical acquisition and product announcements establish the technology’s ownership path and named products, but they do not establish current inventory, pricing, lifecycle status or support availability. Buyers evaluating an existing installation should verify those details with Analog Devices or an authorized distributor before planning a replacement or new deployment.
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