ANALOG DEVICES EVAL-CN0416-ARDZ

EVAL-CN0416-ARDZ is a CN0416 isolated and non-isolated RS-485 transceiver board which allows easy implementation of asynchronous serial (UART) data transmission between multiple Arduino form factor systems or nodes, especially over long distances. The circuit uses the ADM2682E RS-485 transceiver for isolated communications and the LTC2865 for non-isolated RS-485 communications. Both can be configured to either full-duplex or half duplex operation and with open or terminated transmission lines. The circuit has on-board RJ-45 ports which allows the use of the common CAT5 cable for fast physical wiring of nodes. The termination resistance is catered by default to the CAT5 cable characteristic impedance of 100 ohm but can be configured to support the standard RS485 cable impedance of 120 ohm. The cable also carries power supply lines which are by default unpowered but can be connected to a 3.3V supply from the board's low-dropout voltage regulator, ADP7102.