Analog Devices has announced what it claims to be the "world's first" long-reach single-pair Power over Ethernet (SPoE) products for smart buildings and industrial automation — with support for up to 52W power delivery and a 0.6-mile range.
"The Intelligent Edge is one of the most exciting developments of the digital era as computing power is pushed to previously inaccessible applications and locations," claims Leo McHugh, vice president of industrial automation at Analog Devices. "Analog Devices is committed to delivering the unrivaled technology and solutions our customers need to leverage the full potential of the Intelligent Edge in smart buildings and factories as well as many more applications in the future."
Having intelligent devices at the edge is only any good, of course, if you can actually power them. Power over Ethernet (PoE) is a popular way to do so, allowing for a single Ethernet cable to both connect a device to the network and feed it power — while single-pair PoE (SPoE) took the original standard, which offered up to 15.4W measured at-transmission per port, and reduced it from two wire pairs to a single pair while offering up to 52W measured at-transmission.
It's the latter Analog Devices has launched gadgets to support, in two variants: the earlier Power over Data Line (PoDL) and newer SPoE. Designed with industrial use in mind, the company claims its SPoE implementation can offer data and power over a one kilometer (around 0.6 mile) range — representing a big boost over previous versions.
The launch covers two parts: the LTC4296-1, a five-port SPoE power-sourcing equipment (PSE) chip, to be built into power transmission devices; and the LTC9111 SPoE Power Device (PD) to be built into whatever the PSE is attempting to power. For the maximum 0.6-mile power-and-data performance, though, they must be combined with the company's ADIN1100 or ADIN1110 industrial Ethernet chips.