Are ADN4696E compatible with ADN4662?

Hello,

    are the ADN4696E/ADN4697E logic level compatibles with ADN4661/ADN4662?

Can I directly connect these 2 devices?

Thanks in advance

Maurizio.

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  • Hello Maurizio,

    Thank you for the explanation. If I understand correctly, the board in design may be SPI master or slave (Potentially ADN4696E for the interface) that will connect to one other board (either a master or a slave, with ADN4661/ADN4662).

    Going by the datasheets for these devices, this should work, but contention should be avoided where there is an ADN4661 at the other end of a channel. For example when the new board is connected, have all the ADN4696E devices in receive only mode (DE and /RE low) to begin with.

    If I understand correctly, there would be the following two cases for the new board once it is connected:

    New board is Master:

    SPI signal (as LVDS) New Board (as master) Devices Direction Old Slave Board Devices
    /CS ADN4696E (DE high, /RE high) ---> ADN4662
    CLK ADN4696E (DE high, /RE high) ---> ADN4662
    MOSI ADN4696E (DE high, /RE high) ---> ADN4662
    MISO ADN4696E (DE low, /RE low) <--- ADN4661

    New board is Slave:

    SPI signal (as LVDS) New Board (as slave) Devices Direction Old Master Board Devices
    /CS ADN4696E (DE low, /RE low) <--- ADN4661
    CLK ADN4696E (DE low, /RE low) <--- ADN4661
    MOSI ADN4696E (DE low, /RE low) <--- ADN4661
    MISO ADN4696E (DE high, /RE high) ---> ADN4662

    Regards,

    Conal

Reply
  • Hello Maurizio,

    Thank you for the explanation. If I understand correctly, the board in design may be SPI master or slave (Potentially ADN4696E for the interface) that will connect to one other board (either a master or a slave, with ADN4661/ADN4662).

    Going by the datasheets for these devices, this should work, but contention should be avoided where there is an ADN4661 at the other end of a channel. For example when the new board is connected, have all the ADN4696E devices in receive only mode (DE and /RE low) to begin with.

    If I understand correctly, there would be the following two cases for the new board once it is connected:

    New board is Master:

    SPI signal (as LVDS) New Board (as master) Devices Direction Old Slave Board Devices
    /CS ADN4696E (DE high, /RE high) ---> ADN4662
    CLK ADN4696E (DE high, /RE high) ---> ADN4662
    MOSI ADN4696E (DE high, /RE high) ---> ADN4662
    MISO ADN4696E (DE low, /RE low) <--- ADN4661

    New board is Slave:

    SPI signal (as LVDS) New Board (as slave) Devices Direction Old Master Board Devices
    /CS ADN4696E (DE low, /RE low) <--- ADN4661
    CLK ADN4696E (DE low, /RE low) <--- ADN4661
    MOSI ADN4696E (DE low, /RE low) <--- ADN4661
    MISO ADN4696E (DE high, /RE high) ---> ADN4662

    Regards,

    Conal

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