Complete long reach Ethernet for building automation networks  

Complete long reach Ethernet for building automation networks  

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By Nick Flaherty

Analog Devices (ADI) has introduced a complete 10BASE-T1L long reach Ethernet solution designed for building automation networks.

The ADIN2111 adds Long Reach Ethernet connectivity to controllers, sensors, and actuators for more efficient and sustainable building management. The part is suited for use within small, power-constrained edge devices with a power consumption of 80mW, half that of a  discrete implementation with a75 percent saving in PCB real estate.

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There are two variants for industrial and extended temperature operation at −40°C to +85°C and −40°C to +105°C.

The IEEE 802.3cg standard supports Ethernet connectivity over 1.7km of cabling, supports ring redundancy and soft real time protocols like Modbus/TCP, BACnet/IP and KNX. An SPI host interface removes need for microcontroller with integrated MAC Interface and advanced packet filtering offloads the priority traffic management from processor via 16 MAC addresses look up table. There is also IEEE 1588 timestamping support.

The ADIN2111 is designed for daisy chaining data in line and ring networks using existing deployed single twisted pair cabling infrastructure within buildings, shrinking retrofitting costs. The diagnostic features reduce commissioning, installation, and system downtime by troubleshooting problems quickly and effectively using the real time information on link quality and fault location provided.

The ADIN2111BCPZ is priced at $6.50 in a 7 x 7mm 48 pin LFCSP, with the ADIN2111CCPZ at $7.20

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