RHEA is  a high temperature data transmission solution with galvanic isolation of 2.5kV and operating reliably from -55°C to +225°C. The CHT-RHEA is a single chip dual channel, full duplex transceiver (2 transmit and 2 receive channels). The magnetic isolation on each channel is ensured by an external tiny pulse transformer, of which the core diameter does not exceed 6mm (0.24”). The complete 4-channel data transmission requires one instance of CHT-RHEA on each side of the pulse transformers.

RHEA is part of CISSOID’s complete isolated gate driver technology HADES™, where it ensures transmission of control and feedback signals across the low and high voltage domains.

Typical performances:

• Temperature range: -55°C to +225°C
• Data rate:  2Mbits/s
• Transmission delay below 100ns
• Jitter lower than 25ns
• Immunity to dV/dt : 50kV/µs.

Evaluation Kit: 

The RHEA Evaluation Kit includes an Evaluation Board, the complete electrical schematic, the Gerber files, the bill of materials and an Application Note.

The Evaluation Board is built from a 200°C polyimide PCB, and it is populated with two instances of CHT-RHEA integrated circuits in ceramic packages guaranteed for -55°C up to +225C. The board allows short excursions to +200°C~225°C for testing.