GENERAL DESCRIPTION
The CHT-RHEA integrates in a single package 2 transceivers (2 transmit and 2 receive channels). A complete 4 lines data transmission (2 full duplex channels) requires 2 instances of CHT-RHEA, one being connected to the primary side of the transformers and one to the secondary side. Each transmit channel (Tx) implements a modulation block using a circuit’s built-in clock generator, which frequency can be programmed with one among 7 different values inside the range [5.9-15.3 Mhz]. Each receive channel (Rx) demodulates the signal coming from the transformer. The data transmission rate is up to 2 Mbit/s. During power-up of the circuit, the output signals can be forced to the 0 state through the control input pin ENABLE. CHT-RHEA offers state-of-the-art digital signal isolation with substantial advantages over opto-couplers such as lower transmission delay, high reliability, lower power consumption, high immunity to dV/dt and operation in extreme temperature conditions.
