600 Mbps LVDS isolator with reinforced isolation
The Analog Devices ADN4651BRWZ is a two-channel, unidirectional LVDS digital isolator from the iCoupler® family, built on magnetic coupling technology. It delivers a 600 Mbps data rate per channel with a 4.5ns propagation delay, making it suitable for high-speed serial links where galvanic isolation is required.
5000 Vrms isolation — what it buys you
The 5000 Vrms isolation voltage is a reinforced-grade rating, not basic isolation. That matters when the isolator sits between a 2.5V LVDS controller and a high-voltage domain in motor drives, grid-tied inverters, or patient-connected medical electronics. The 25 kV/µs CMTI ensures the data link stays intact when a fast common-mode transient — say from an IGBT switching event — slams across the isolation barrier.
2.5V supply rail — not a 3.3V part
The ADN4651BRWZ runs on a 2.375V to 2.625V supply — a tight 2.5V ±5% rail. This is not a generic 3.3V or 5V isolator; it is designed specifically for LVDS signal chains that operate at 2.5V. If your system already has a 2.5V rail for the LVDS transceiver, this part drops in. If you are trying to interface with a 3.3V logic domain, you will need level translation on the input side or a different isolator variant. The unidirectional channel configuration (one input on side 1, one input on side 2) supports a single LVDS pair in each direction, which matches point-to-point links where the data flow is known at design time.
For dual-sourcing flexibility, the ADN4651BRSZ-RL7 is a functional peer with the same 600 Mbps data rate and 1/1 input configuration but rated at 3750 Vrms isolation in a smaller package variant — a trade-off of isolation voltage for board area when 5000 Vrms is not required.