Options and Solutions for a High Speed or Low Power Signal and Power Isolated RS-485 Fieldbus

Options and Solutions for a High Speed or Low Power Signal and Power Isolated RS-485 FieldbusLower power operating modes are in high demand for battery powered systems, downhole applications and process control systems that operate in 4 mA to 20 mA loops.  Analog Devices offers a micropower digital isolator, the ADuM1441, which consumes <23 μA of quiescent current in shutdown mode.  The ADM3483 3.3 V, 250 kbps RS-485 transceiver offers extremely low quiescent current, with typically only 2 nA required for shutdown mode.