What this isoPower transceiver brings to the bus
The ADM2682EBRIZ-RL7 is an Analog Devices isoPower® isolated RS-422/RS-485 transceiver that integrates both the signal isolation and the isolated DC-DC power supply into a single 16-SOIC package. That means you don't need a separate isolated converter module — the part generates its own isolated rail on-chip, which simplifies the PCB layout and reduces the component count on the isolated side. It's rated for 5000 Vrms of galvanic isolation, so it handles the creepage and clearance requirements for industrial and medical equipment where a fault on the bus must not reach the controller side. The data rate hits 16 Mbps, which puts it in the fast category for RS-485 links — suitable for high-speed fieldbus, encoder feedback, or multi-drop sensor networks where the bus must keep up with real-time control loops. The three channels are arranged 2/1 (two on the logic side, one on the bus side), unidirectional, which matches the typical TX/RX/DE signal set for a half-duplex RS-485 node.
16 Mbps and 25 kV/µs CMTI — the specs that decide the fit
The 16 Mbps data rate is the headline number, but the common-mode transient immunity of 25 kV/µs is what keeps the link alive in a motor drive or inverter cabinet. Fast IGBT switching edges couple common-mode noise onto the cable; if the isolator's CMTI is too low, the receiver sees false start bits or data corruption. At 25 kV/µs this part handles the noise environment of a 400 V drive without external filtering on the bus side. Propagation delay is 100 ns max in both directions, and rise/fall time is 15 ns typical. That combination works for 16 Mbps signaling with reasonable cable lengths — expect to keep the stub length under a few meters at full speed, or drop to a lower data rate for longer runs.
Package and temperature range for the board
The wide-body package provides the creepage distance needed to maintain the 5000 Vrms isolation rating across the barrier.