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ADN4624 with MC20901

Category: Hardware
Product Number: ADN4624

Hi ADI team,

I've been doing a bit of reading around trying to pass MIPI CSI-2 signals across an isolation boundary and it appears as though the most common approach is to use some form of FPGA to convert the signals into LVDS and then send these signals back to another FPGA on the other side.

What I'd like to know is whether using a dedicated MIPI D-PHY to LVDS bridge, for example the Meticom 20901, would eliminate the need for an FPGA on the "isolated" side. My thinking is as follows:


The proposed MIPI D-PHY output would be running at a channel rate of 800Mbps. Both the Meticom and the ADN4624 are capable of these data rates.

However, the HS and LP output voltages of the Meticom are 1.09 - 1.31V and 2.3 - 2.7V respectively. If I power both sides of the ADN4624 with a VDD = 1.8V as specified in the datasheet, the input side should be fine to accept incoming signals (as specified in the datasheet) but what becomes unclear is whether this is even feasible. Will the ADN4624 be able to correctly transmit both HS and LP signals across the isolation boundary without significant signal distortion? Or will it not work for another reason?

Any help you could offer would be greatly appreciated.

Many thanks,


  • Hi Connor,

    Yes, in order to have mipi isolation, our LVDS isolator needs to be accompanied by other processing nodes such as an FPGA or Bridge IC ( Meticom 20901) for protocol state detection.

    We have not tried this particular Bridge IC approach ourselves yet, looking in to bridge ICs specification it can be used with our LVDS isolator for MIPI Isolation.You can contact the Bridge IC manufacturer for further confirmation.

    Hope this Helps