Industry's first integrated bidirectional 3.4MHz I2C isolator

Built on Akros’ proven GreenEdge digital isolation technology, each of the isolation channels are rated to provide 2.5kV of galvanic isolation. On the bidirectional I2C channels, the AS1705’s 3.4MHz data rate provides the needed bandwidth for a system’s processor to dynamically monitor and control the power requirements for multiple PSE controllers within a system. This enables the system to allocate the precise amount of power required by each port while eliminating unnecessary power allocation, which in turn reduces system energy consumption.

The five unidirectional channels replace optocouplers or standalone unidirectional digital isolators and provide all of the isolated communication signals used by a PSE system, including system reset, PSE interrupt and three power good indicators from the system’s power supply units. The integrated functionality of the AS1705 enables it to replace: either one I2C digital isolator and five optocouplers or one I2C digital isolator and a five-channel unidirectional digital isolator. In both of these cases, the AS1705 reduces the PCB footprint of the isolation circuitry by 50%, simplifying board layout and reducing design time.

Elie Antoun, President and CEO, Akros Silicon, commented: "The 3.4MHz AS1705 isolator offers the highest speed solution for real-time network power diagnostics for PSE equipment. This integrated digital isolator simultaneously solves the design challenges of increasing communication bandwidth over the isolation barrier while also reducing PCB area in 48 and 96 port Ethernet switches.”

The AS1705 is available now, priced at $2.30 (USD) each in 1,000 unit quantities. Delivery is 8 weeks ARO.