ADE1202 Isolated Digital Input Analog Devices ADE1202 Isolated Digital Input is a dual-channel, configurable, isolated digital input monitoring solution for energy transmission and distribution applications. The ADE1202 is configured through the serial port interface (SPI) to perform an isolated measurement of the digital input that is also called binary input or contact input. The ADE1202 digital output signal on the DOUT1 pin reflects the state of the input signal after user-configurable signal conditioning. The SPI protocol supports addressing to allow up to eight devices sharing one 4-wire SPI port.